run-tests: introduce a `HGTEST_REAL_HG` variable for test

It turns out that currently, `hg` and `which hg` can point to different things
because `hg` is an alias… This is annoying because script and pieces of test
are unknowingly using the wrong `hg`.

We will fix it in another changeset. However some test actually need to use a
real `hg` binary and not some `chg` or `rhg` equivalent. So we introduce a new
variable with the right value and we put it to us in the appropriate location.

Differential Revision: https://phab.mercurial-scm.org/D11049

tests/run-tests.py

@@ -1,3955 +1,3955
 #!/usr/bin/env python3
 #
 # run-tests.py - Run a set of tests on Mercurial
 #
 # Copyright 2006 Olivia Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 # Modifying this script is tricky because it has many modes:
 #   - serial (default) vs parallel (-jN, N > 1)
 #   - no coverage (default) vs coverage (-c, -C, -s)
 #   - temp install (default) vs specific hg script (--with-hg, --local)
 #   - tests are a mix of shell scripts and Python scripts
 #
 # If you change this script, it is recommended that you ensure you
 # haven't broken it by running it in various modes with a representative
 # sample of test scripts.  For example:
 #
 #  1) serial, no coverage, temp install:
 #      ./run-tests.py test-s*
 #  2) serial, no coverage, local hg:
 #      ./run-tests.py --local test-s*
 #  3) serial, coverage, temp install:
 #      ./run-tests.py -c test-s*
 #  4) serial, coverage, local hg:
 #      ./run-tests.py -c --local test-s*      # unsupported
 #  5) parallel, no coverage, temp install:
 #      ./run-tests.py -j2 test-s*
 #  6) parallel, no coverage, local hg:
 #      ./run-tests.py -j2 --local test-s*
 #  7) parallel, coverage, temp install:
 #      ./run-tests.py -j2 -c test-s*          # currently broken
 #  8) parallel, coverage, local install:
 #      ./run-tests.py -j2 -c --local test-s*  # unsupported (and broken)
 #  9) parallel, custom tmp dir:
 #      ./run-tests.py -j2 --tmpdir /tmp/myhgtests
 #  10) parallel, pure, tests that call run-tests:
 #      ./run-tests.py --pure `grep -l run-tests.py *.t`
 #
 # (You could use any subset of the tests: test-s* happens to match
 # enough that it's worth doing parallel runs, few enough that it
 # completes fairly quickly, includes both shell and Python scripts, and
 # includes some scripts that run daemon processes.)
 
 from __future__ import absolute_import, print_function
 
 import argparse
 import collections
 import contextlib
 import difflib
 import distutils.version as version
 import errno
 import json
 import multiprocessing
 import os
 import platform
 import random
 import re
 import shutil
 import signal
 import socket
 import subprocess
 import sys
 import sysconfig
 import tempfile
 import threading
 import time
 import unittest
 import uuid
 import xml.dom.minidom as minidom
 
 WINDOWS = os.name == r'nt'
 
 try:
     import Queue as queue
 except ImportError:
     import queue
 
 try:
     import shlex
 
     shellquote = shlex.quote
 except (ImportError, AttributeError):
     import pipes
 
     shellquote = pipes.quote
 
 
 processlock = threading.Lock()
 
 pygmentspresent = False
 try:  # is pygments installed
     import pygments
     import pygments.lexers as lexers
     import pygments.lexer as lexer
     import pygments.formatters as formatters
     import pygments.token as token
     import pygments.style as style
 
     if WINDOWS:
         hgpath = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
         sys.path.append(hgpath)
         try:
             from mercurial import win32  # pytype: disable=import-error
 
             # Don't check the result code because it fails on heptapod, but
             # something is able to convert to color anyway.
             win32.enablevtmode()
         finally:
             sys.path = sys.path[:-1]
 
     pygmentspresent = True
     difflexer = lexers.DiffLexer()
     terminal256formatter = formatters.Terminal256Formatter()
 except ImportError:
     pass
 
 if pygmentspresent:
 
     class TestRunnerStyle(style.Style):
         default_style = ""
         skipped = token.string_to_tokentype("Token.Generic.Skipped")
         failed = token.string_to_tokentype("Token.Generic.Failed")
         skippedname = token.string_to_tokentype("Token.Generic.SName")
         failedname = token.string_to_tokentype("Token.Generic.FName")
         styles = {
             skipped: '#e5e5e5',
             skippedname: '#00ffff',
             failed: '#7f0000',
             failedname: '#ff0000',
         }
 
     class TestRunnerLexer(lexer.RegexLexer):
         testpattern = r'[\w-]+\.(t|py)(#[a-zA-Z0-9_\-\.]+)?'
         tokens = {
             'root': [
                 (r'^Skipped', token.Generic.Skipped, 'skipped'),
                 (r'^Failed ', token.Generic.Failed, 'failed'),
                 (r'^ERROR: ', token.Generic.Failed, 'failed'),
             ],
             'skipped': [
                 (testpattern, token.Generic.SName),
                 (r':.*', token.Generic.Skipped),
             ],
             'failed': [
                 (testpattern, token.Generic.FName),
                 (r'(:| ).*', token.Generic.Failed),
             ],
         }
 
     runnerformatter = formatters.Terminal256Formatter(style=TestRunnerStyle)
     runnerlexer = TestRunnerLexer()
 
 origenviron = os.environ.copy()
 
 
 if sys.version_info > (3, 5, 0):
     PYTHON3 = True
     xrange = range  # we use xrange in one place, and we'd rather not use range
 
     def _sys2bytes(p):
         if p is None:
             return p
         return p.encode('utf-8')
 
     def _bytes2sys(p):
         if p is None:
             return p
         return p.decode('utf-8')
 
     osenvironb = getattr(os, 'environb', None)
     if osenvironb is None:
         # Windows lacks os.environb, for instance.  A proxy over the real thing
         # instead of a copy allows the environment to be updated via bytes on
         # all platforms.
         class environbytes(object):
             def __init__(self, strenv):
                 self.__len__ = strenv.__len__
                 self.clear = strenv.clear
                 self._strenv = strenv
 
             def __getitem__(self, k):
                 v = self._strenv.__getitem__(_bytes2sys(k))
                 return _sys2bytes(v)
 
             def __setitem__(self, k, v):
                 self._strenv.__setitem__(_bytes2sys(k), _bytes2sys(v))
 
             def __delitem__(self, k):
                 self._strenv.__delitem__(_bytes2sys(k))
 
             def __contains__(self, k):
                 return self._strenv.__contains__(_bytes2sys(k))
 
             def __iter__(self):
                 return iter([_sys2bytes(k) for k in iter(self._strenv)])
 
             def get(self, k, default=None):
                 v = self._strenv.get(_bytes2sys(k), _bytes2sys(default))
                 return _sys2bytes(v)
 
             def pop(self, k, default=None):
                 v = self._strenv.pop(_bytes2sys(k), _bytes2sys(default))
                 return _sys2bytes(v)
 
         osenvironb = environbytes(os.environ)
 
     getcwdb = getattr(os, 'getcwdb')
     if not getcwdb or WINDOWS:
         getcwdb = lambda: _sys2bytes(os.getcwd())
 
 elif sys.version_info >= (3, 0, 0):
     print(
         '%s is only supported on Python 3.5+ and 2.7, not %s'
         % (sys.argv[0], '.'.join(str(v) for v in sys.version_info[:3]))
     )
     sys.exit(70)  # EX_SOFTWARE from `man 3 sysexit`
 else:
     PYTHON3 = False
 
     # In python 2.x, path operations are generally done using
     # bytestrings by default, so we don't have to do any extra
     # fiddling there. We define the wrapper functions anyway just to
     # help keep code consistent between platforms.
     def _sys2bytes(p):
         return p
 
     _bytes2sys = _sys2bytes
     osenvironb = os.environ
     getcwdb = os.getcwd
 
 # For Windows support
 wifexited = getattr(os, "WIFEXITED", lambda x: False)
 
 # Whether to use IPv6
 def checksocketfamily(name, port=20058):
     """return true if we can listen on localhost using family=name
 
     name should be either 'AF_INET', or 'AF_INET6'.
     port being used is okay - EADDRINUSE is considered as successful.
     """
     family = getattr(socket, name, None)
     if family is None:
         return False
     try:
         s = socket.socket(family, socket.SOCK_STREAM)
         s.bind(('localhost', port))
         s.close()
         return True
     except socket.error as exc:
         if exc.errno == errno.EADDRINUSE:
             return True
         elif exc.errno in (errno.EADDRNOTAVAIL, errno.EPROTONOSUPPORT):
             return False
         else:
             raise
     else:
         return False
 
 
 # useipv6 will be set by parseargs
 useipv6 = None
 
 
 def checkportisavailable(port):
     """return true if a port seems free to bind on localhost"""
     if useipv6:
         family = socket.AF_INET6
     else:
         family = socket.AF_INET
     try:
         with contextlib.closing(socket.socket(family, socket.SOCK_STREAM)) as s:
             s.bind(('localhost', port))
         return True
     except socket.error as exc:
         if WINDOWS and exc.errno == errno.WSAEACCES:
             return False
         elif PYTHON3:
             # TODO: make a proper exception handler after dropping py2.  This
             #       works because socket.error is an alias for OSError on py3,
             #       which is also the baseclass of PermissionError.
             if isinstance(exc, PermissionError):
                 return False
         if exc.errno not in (
             errno.EADDRINUSE,
             errno.EADDRNOTAVAIL,
             errno.EPROTONOSUPPORT,
         ):
             raise
     return False
 
 
 closefds = os.name == 'posix'
 
 
 def Popen4(cmd, wd, timeout, env=None):
     processlock.acquire()
     p = subprocess.Popen(
         _bytes2sys(cmd),
         shell=True,
         bufsize=-1,
         cwd=_bytes2sys(wd),
         env=env,
         close_fds=closefds,
         stdin=subprocess.PIPE,
         stdout=subprocess.PIPE,
         stderr=subprocess.STDOUT,
     )
     processlock.release()
 
     p.fromchild = p.stdout
     p.tochild = p.stdin
     p.childerr = p.stderr
 
     p.timeout = False
     if timeout:
 
         def t():
             start = time.time()
             while time.time() - start < timeout and p.returncode is None:
                 time.sleep(0.1)
             p.timeout = True
             vlog('# Timout reached for process %d' % p.pid)
             if p.returncode is None:
                 terminate(p)
 
         threading.Thread(target=t).start()
 
     return p
 
 
 if sys.executable:
     sysexecutable = sys.executable
 elif os.environ.get('PYTHONEXECUTABLE'):
     sysexecutable = os.environ['PYTHONEXECUTABLE']
 elif os.environ.get('PYTHON'):
     sysexecutable = os.environ['PYTHON']
 else:
     raise AssertionError('Could not find Python interpreter')
 
 PYTHON = _sys2bytes(sysexecutable.replace('\\', '/'))
 IMPL_PATH = b'PYTHONPATH'
 if 'java' in sys.platform:
     IMPL_PATH = b'JYTHONPATH'
 
 default_defaults = {
     'jobs': ('HGTEST_JOBS', multiprocessing.cpu_count()),
     'timeout': ('HGTEST_TIMEOUT', 360),
     'slowtimeout': ('HGTEST_SLOWTIMEOUT', 1500),
     'port': ('HGTEST_PORT', 20059),
     'shell': ('HGTEST_SHELL', 'sh'),
 }
 
 defaults = default_defaults.copy()
 
 
 def canonpath(path):
     return os.path.realpath(os.path.expanduser(path))
 
 
 def parselistfiles(files, listtype, warn=True):
     entries = dict()
     for filename in files:
         try:
             path = os.path.expanduser(os.path.expandvars(filename))
             f = open(path, "rb")
         except IOError as err:
             if err.errno != errno.ENOENT:
                 raise
             if warn:
                 print("warning: no such %s file: %s" % (listtype, filename))
             continue
 
         for line in f.readlines():
             line = line.split(b'#', 1)[0].strip()
             if line:
                 # Ensure path entries are compatible with os.path.relpath()
                 entries[os.path.normpath(line)] = filename
 
         f.close()
     return entries
 
 
 def parsettestcases(path):
     """read a .t test file, return a set of test case names
 
     If path does not exist, return an empty set.
     """
     cases = []
     try:
         with open(path, 'rb') as f:
             for l in f:
                 if l.startswith(b'#testcases '):
                     cases.append(sorted(l[11:].split()))
     except IOError as ex:
         if ex.errno != errno.ENOENT:
             raise
     return cases
 
 
 def getparser():
     """Obtain the OptionParser used by the CLI."""
     parser = argparse.ArgumentParser(usage='%(prog)s [options] [tests]')
 
     selection = parser.add_argument_group('Test Selection')
     selection.add_argument(
         '--allow-slow-tests',
         action='store_true',
         help='allow extremely slow tests',
     )
     selection.add_argument(
         "--blacklist",
         action="append",
         help="skip tests listed in the specified blacklist file",
     )
     selection.add_argument(
         "--changed",
         help="run tests that are changed in parent rev or working directory",
     )
     selection.add_argument(
         "-k", "--keywords", help="run tests matching keywords"
     )
     selection.add_argument(
         "-r", "--retest", action="store_true", help="retest failed tests"
     )
     selection.add_argument(
         "--test-list",
         action="append",
         help="read tests to run from the specified file",
     )
     selection.add_argument(
         "--whitelist",
         action="append",
         help="always run tests listed in the specified whitelist file",
     )
     selection.add_argument(
         'tests', metavar='TESTS', nargs='*', help='Tests to run'
     )
 
     harness = parser.add_argument_group('Test Harness Behavior')
     harness.add_argument(
         '--bisect-repo',
         metavar='bisect_repo',
         help=(
             "Path of a repo to bisect. Use together with " "--known-good-rev"
         ),
     )
     harness.add_argument(
         "-d",
         "--debug",
         action="store_true",
         help="debug mode: write output of test scripts to console"
         " rather than capturing and diffing it (disables timeout)",
     )
     harness.add_argument(
         "-f",
         "--first",
         action="store_true",
         help="exit on the first test failure",
     )
     harness.add_argument(
         "-i",
         "--interactive",
         action="store_true",
         help="prompt to accept changed output",
     )
     harness.add_argument(
         "-j",
         "--jobs",
         type=int,
         help="number of jobs to run in parallel"
         " (default: $%s or %d)" % defaults['jobs'],
     )
     harness.add_argument(
         "--keep-tmpdir",
         action="store_true",
         help="keep temporary directory after running tests",
     )
     harness.add_argument(
         '--known-good-rev',
         metavar="known_good_rev",
         help=(
             "Automatically bisect any failures using this "
             "revision as a known-good revision."
         ),
     )
     harness.add_argument(
         "--list-tests",
         action="store_true",
         help="list tests instead of running them",
     )
     harness.add_argument(
         "--loop", action="store_true", help="loop tests repeatedly"
     )
     harness.add_argument(
         '--random', action="store_true", help='run tests in random order'
     )
     harness.add_argument(
         '--order-by-runtime',
         action="store_true",
         help='run slowest tests first, according to .testtimes',
     )
     harness.add_argument(
         "-p",
         "--port",
         type=int,
         help="port on which servers should listen"
         " (default: $%s or %d)" % defaults['port'],
     )
     harness.add_argument(
         '--profile-runner',
         action='store_true',
         help='run statprof on run-tests',
     )
     harness.add_argument(
         "-R", "--restart", action="store_true", help="restart at last error"
     )
     harness.add_argument(
         "--runs-per-test",
         type=int,
         dest="runs_per_test",
         help="run each test N times (default=1)",
         default=1,
     )
     harness.add_argument(
         "--shell", help="shell to use (default: $%s or %s)" % defaults['shell']
     )
     harness.add_argument(
         '--showchannels', action='store_true', help='show scheduling channels'
     )
     harness.add_argument(
         "--slowtimeout",
         type=int,
         help="kill errant slow tests after SLOWTIMEOUT seconds"
         " (default: $%s or %d)" % defaults['slowtimeout'],
     )
     harness.add_argument(
         "-t",
         "--timeout",
         type=int,
         help="kill errant tests after TIMEOUT seconds"
         " (default: $%s or %d)" % defaults['timeout'],
     )
     harness.add_argument(
         "--tmpdir",
         help="run tests in the given temporary directory"
         " (implies --keep-tmpdir)",
     )
     harness.add_argument(
         "-v", "--verbose", action="store_true", help="output verbose messages"
     )
 
     hgconf = parser.add_argument_group('Mercurial Configuration')
     hgconf.add_argument(
         "--chg",
         action="store_true",
         help="install and use chg wrapper in place of hg",
     )
     hgconf.add_argument(
         "--chg-debug",
         action="store_true",
         help="show chg debug logs",
     )
     hgconf.add_argument(
         "--rhg",
         action="store_true",
         help="install and use rhg Rust implementation in place of hg",
     )
     hgconf.add_argument("--compiler", help="compiler to build with")
     hgconf.add_argument(
         '--extra-config-opt',
         action="append",
         default=[],
         help='set the given config opt in the test hgrc',
     )
     hgconf.add_argument(
         "-l",
         "--local",
         action="store_true",
         help="shortcut for --with-hg=<testdir>/../hg, "
         "--with-rhg=<testdir>/../rust/target/release/rhg if --rhg is set, "
         "and --with-chg=<testdir>/../contrib/chg/chg if --chg is set",
     )
     hgconf.add_argument(
         "--ipv6",
         action="store_true",
         help="prefer IPv6 to IPv4 for network related tests",
     )
     hgconf.add_argument(
         "--pure",
         action="store_true",
         help="use pure Python code instead of C extensions",
     )
     hgconf.add_argument(
         "--rust",
         action="store_true",
         help="use Rust code alongside C extensions",
     )
     hgconf.add_argument(
         "--no-rust",
         action="store_true",
         help="do not use Rust code even if compiled",
     )
     hgconf.add_argument(
         "--with-chg",
         metavar="CHG",
         help="use specified chg wrapper in place of hg",
     )
     hgconf.add_argument(
         "--with-rhg",
         metavar="RHG",
         help="use specified rhg Rust implementation in place of hg",
     )
     hgconf.add_argument(
         "--with-hg",
         metavar="HG",
         help="test using specified hg script rather than a "
         "temporary installation",
     )
 
     reporting = parser.add_argument_group('Results Reporting')
     reporting.add_argument(
         "-C",
         "--annotate",
         action="store_true",
         help="output files annotated with coverage",
     )
     reporting.add_argument(
         "--color",
         choices=["always", "auto", "never"],
         default=os.environ.get('HGRUNTESTSCOLOR', 'auto'),
         help="colorisation: always|auto|never (default: auto)",
     )
     reporting.add_argument(
         "-c",
         "--cover",
         action="store_true",
         help="print a test coverage report",
     )
     reporting.add_argument(
         '--exceptions',
         action='store_true',
         help='log all exceptions and generate an exception report',
     )
     reporting.add_argument(
         "-H",
         "--htmlcov",
         action="store_true",
         help="create an HTML report of the coverage of the files",
     )
     reporting.add_argument(
         "--json",
         action="store_true",
         help="store test result data in 'report.json' file",
     )
     reporting.add_argument(
         "--outputdir",
         help="directory to write error logs to (default=test directory)",
     )
     reporting.add_argument(
         "-n", "--nodiff", action="store_true", help="skip showing test changes"
     )
     reporting.add_argument(
         "-S",
         "--noskips",
         action="store_true",
         help="don't report skip tests verbosely",
     )
     reporting.add_argument(
         "--time", action="store_true", help="time how long each test takes"
     )
     reporting.add_argument("--view", help="external diff viewer")
     reporting.add_argument(
         "--xunit", help="record xunit results at specified path"
     )
 
     for option, (envvar, default) in defaults.items():
         defaults[option] = type(default)(os.environ.get(envvar, default))
     parser.set_defaults(**defaults)
 
     return parser
 
 
 def parseargs(args, parser):
     """Parse arguments with our OptionParser and validate results."""
     options = parser.parse_args(args)
 
     # jython is always pure
     if 'java' in sys.platform or '__pypy__' in sys.modules:
         options.pure = True
 
     if platform.python_implementation() != 'CPython' and options.rust:
         parser.error('Rust extensions are only available with CPython')
 
     if options.pure and options.rust:
         parser.error('--rust cannot be used with --pure')
 
     if options.rust and options.no_rust:
         parser.error('--rust cannot be used with --no-rust')
 
     if options.local:
         if options.with_hg or options.with_rhg or options.with_chg:
             parser.error(
                 '--local cannot be used with --with-hg or --with-rhg or --with-chg'
             )
         testdir = os.path.dirname(_sys2bytes(canonpath(sys.argv[0])))
         reporootdir = os.path.dirname(testdir)
         pathandattrs = [(b'hg', 'with_hg')]
         if options.chg:
             pathandattrs.append((b'contrib/chg/chg', 'with_chg'))
         if options.rhg:
             pathandattrs.append((b'rust/target/release/rhg', 'with_rhg'))
         for relpath, attr in pathandattrs:
             binpath = os.path.join(reporootdir, relpath)
             if not (WINDOWS or os.access(binpath, os.X_OK)):
                 parser.error(
                     '--local specified, but %r not found or '
                     'not executable' % binpath
                 )
             setattr(options, attr, _bytes2sys(binpath))
 
     if options.with_hg:
         options.with_hg = canonpath(_sys2bytes(options.with_hg))
         if not (
             os.path.isfile(options.with_hg)
             and os.access(options.with_hg, os.X_OK)
         ):
             parser.error('--with-hg must specify an executable hg script')
         if os.path.basename(options.with_hg) not in [b'hg', b'hg.exe']:
             msg = 'warning: --with-hg should specify an hg script, not: %s\n'
             msg %= _bytes2sys(os.path.basename(options.with_hg))
             sys.stderr.write(msg)
             sys.stderr.flush()
 
     if (options.chg or options.with_chg) and WINDOWS:
         parser.error('chg does not work on %s' % os.name)
     if (options.rhg or options.with_rhg) and WINDOWS:
         parser.error('rhg does not work on %s' % os.name)
     if options.with_chg:
         options.chg = False  # no installation to temporary location
         options.with_chg = canonpath(_sys2bytes(options.with_chg))
         if not (
             os.path.isfile(options.with_chg)
             and os.access(options.with_chg, os.X_OK)
         ):
             parser.error('--with-chg must specify a chg executable')
     if options.with_rhg:
         options.rhg = False  # no installation to temporary location
         options.with_rhg = canonpath(_sys2bytes(options.with_rhg))
         if not (
             os.path.isfile(options.with_rhg)
             and os.access(options.with_rhg, os.X_OK)
         ):
             parser.error('--with-rhg must specify a rhg executable')
     if options.chg and options.with_hg:
         # chg shares installation location with hg
         parser.error(
             '--chg does not work when --with-hg is specified '
             '(use --with-chg instead)'
         )
     if options.rhg and options.with_hg:
         # rhg shares installation location with hg
         parser.error(
             '--rhg does not work when --with-hg is specified '
             '(use --with-rhg instead)'
         )
     if options.rhg and options.chg:
         parser.error('--rhg and --chg do not work together')
 
     if options.color == 'always' and not pygmentspresent:
         sys.stderr.write(
             'warning: --color=always ignored because '
             'pygments is not installed\n'
         )
 
     if options.bisect_repo and not options.known_good_rev:
         parser.error("--bisect-repo cannot be used without --known-good-rev")
 
     global useipv6
     if options.ipv6:
         useipv6 = checksocketfamily('AF_INET6')
     else:
         # only use IPv6 if IPv4 is unavailable and IPv6 is available
         useipv6 = (not checksocketfamily('AF_INET')) and checksocketfamily(
             'AF_INET6'
         )
 
     options.anycoverage = options.cover or options.annotate or options.htmlcov
     if options.anycoverage:
         try:
             import coverage
 
             covver = version.StrictVersion(coverage.__version__).version
             if covver < (3, 3):
                 parser.error('coverage options require coverage 3.3 or later')
         except ImportError:
             parser.error('coverage options now require the coverage package')
 
     if options.anycoverage and options.local:
         # this needs some path mangling somewhere, I guess
         parser.error(
             "sorry, coverage options do not work when --local " "is specified"
         )
 
     if options.anycoverage and options.with_hg:
         parser.error(
             "sorry, coverage options do not work when --with-hg " "is specified"
         )
 
     global verbose
     if options.verbose:
         verbose = ''
 
     if options.tmpdir:
         options.tmpdir = canonpath(options.tmpdir)
 
     if options.jobs < 1:
         parser.error('--jobs must be positive')
     if options.interactive and options.debug:
         parser.error("-i/--interactive and -d/--debug are incompatible")
     if options.debug:
         if options.timeout != defaults['timeout']:
             sys.stderr.write('warning: --timeout option ignored with --debug\n')
         if options.slowtimeout != defaults['slowtimeout']:
             sys.stderr.write(
                 'warning: --slowtimeout option ignored with --debug\n'
             )
         options.timeout = 0
         options.slowtimeout = 0
 
     if options.blacklist:
         options.blacklist = parselistfiles(options.blacklist, 'blacklist')
     if options.whitelist:
         options.whitelisted = parselistfiles(options.whitelist, 'whitelist')
     else:
         options.whitelisted = {}
 
     if options.showchannels:
         options.nodiff = True
 
     return options
 
 
 def rename(src, dst):
     """Like os.rename(), trade atomicity and opened files friendliness
     for existing destination support.
     """
     shutil.copy(src, dst)
     os.remove(src)
 
 
 def makecleanable(path):
     """Try to fix directory permission recursively so that the entire tree
     can be deleted"""
     for dirpath, dirnames, _filenames in os.walk(path, topdown=True):
         for d in dirnames:
             p = os.path.join(dirpath, d)
             try:
                 os.chmod(p, os.stat(p).st_mode & 0o777 | 0o700)  # chmod u+rwx
             except OSError:
                 pass
 
 
 _unified_diff = difflib.unified_diff
 if PYTHON3:
     import functools
 
     _unified_diff = functools.partial(difflib.diff_bytes, difflib.unified_diff)
 
 
 def getdiff(expected, output, ref, err):
     servefail = False
     lines = []
     for line in _unified_diff(expected, output, ref, err):
         if line.startswith(b'+++') or line.startswith(b'---'):
             line = line.replace(b'\\', b'/')
             if line.endswith(b' \n'):
                 line = line[:-2] + b'\n'
         lines.append(line)
         if not servefail and line.startswith(
             b'+  abort: child process failed to start'
         ):
             servefail = True
 
     return servefail, lines
 
 
 verbose = False
 
 
 def vlog(*msg):
     """Log only when in verbose mode."""
     if verbose is False:
         return
 
     return log(*msg)
 
 
 # Bytes that break XML even in a CDATA block: control characters 0-31
 # sans \t, \n and \r
 CDATA_EVIL = re.compile(br"[\000-\010\013\014\016-\037]")
 
 # Match feature conditionalized output lines in the form, capturing the feature
 # list in group 2, and the preceeding line output in group 1:
 #
 #   output..output (feature !)\n
 optline = re.compile(br'(.*) \((.+?) !\)\n$')
 
 
 def cdatasafe(data):
     """Make a string safe to include in a CDATA block.
 
     Certain control characters are illegal in a CDATA block, and
     there's no way to include a ]]> in a CDATA either. This function
     replaces illegal bytes with ? and adds a space between the ]] so
     that it won't break the CDATA block.
     """
     return CDATA_EVIL.sub(b'?', data).replace(b']]>', b'] ]>')
 
 
 def log(*msg):
     """Log something to stdout.
 
     Arguments are strings to print.
     """
     with iolock:
         if verbose:
             print(verbose, end=' ')
         for m in msg:
             print(m, end=' ')
         print()
         sys.stdout.flush()
 
 
 def highlightdiff(line, color):
     if not color:
         return line
     assert pygmentspresent
     return pygments.highlight(
         line.decode('latin1'), difflexer, terminal256formatter
     ).encode('latin1')
 
 
 def highlightmsg(msg, color):
     if not color:
         return msg
     assert pygmentspresent
     return pygments.highlight(msg, runnerlexer, runnerformatter)
 
 
 def terminate(proc):
     """Terminate subprocess"""
     vlog('# Terminating process %d' % proc.pid)
     try:
         proc.terminate()
     except OSError:
         pass
 
 
 def killdaemons(pidfile):
     import killdaemons as killmod
 
     return killmod.killdaemons(pidfile, tryhard=False, remove=True, logfn=vlog)
 
 
 class Test(unittest.TestCase):
     """Encapsulates a single, runnable test.
 
     While this class conforms to the unittest.TestCase API, it differs in that
     instances need to be instantiated manually. (Typically, unittest.TestCase
     classes are instantiated automatically by scanning modules.)
     """
 
     # Status code reserved for skipped tests (used by hghave).
     SKIPPED_STATUS = 80
 
     def __init__(
         self,
         path,
         outputdir,
         tmpdir,
         keeptmpdir=False,
         debug=False,
         first=False,
         timeout=None,
         startport=None,
         extraconfigopts=None,
         shell=None,
         hgcommand=None,
         slowtimeout=None,
         usechg=False,
         chgdebug=False,
         useipv6=False,
     ):
         """Create a test from parameters.
 
         path is the full path to the file defining the test.
 
         tmpdir is the main temporary directory to use for this test.
 
         keeptmpdir determines whether to keep the test's temporary directory
         after execution. It defaults to removal (False).
 
         debug mode will make the test execute verbosely, with unfiltered
         output.
 
         timeout controls the maximum run time of the test. It is ignored when
         debug is True. See slowtimeout for tests with #require slow.
 
         slowtimeout overrides timeout if the test has #require slow.
 
         startport controls the starting port number to use for this test. Each
         test will reserve 3 port numbers for execution. It is the caller's
         responsibility to allocate a non-overlapping port range to Test
         instances.
 
         extraconfigopts is an iterable of extra hgrc config options. Values
         must have the form "key=value" (something understood by hgrc). Values
         of the form "foo.key=value" will result in "[foo] key=value".
 
         shell is the shell to execute tests in.
         """
         if timeout is None:
             timeout = defaults['timeout']
         if startport is None:
             startport = defaults['port']
         if slowtimeout is None:
             slowtimeout = defaults['slowtimeout']
         self.path = path
         self.relpath = os.path.relpath(path)
         self.bname = os.path.basename(path)
         self.name = _bytes2sys(self.bname)
         self._testdir = os.path.dirname(path)
         self._outputdir = outputdir
         self._tmpname = os.path.basename(path)
         self.errpath = os.path.join(self._outputdir, b'%s.err' % self.bname)
 
         self._threadtmp = tmpdir
         self._keeptmpdir = keeptmpdir
         self._debug = debug
         self._first = first
         self._timeout = timeout
         self._slowtimeout = slowtimeout
         self._startport = startport
         self._extraconfigopts = extraconfigopts or []
         self._shell = _sys2bytes(shell)
         self._hgcommand = hgcommand or b'hg'
         self._usechg = usechg
         self._chgdebug = chgdebug
         self._useipv6 = useipv6
 
         self._aborted = False
         self._daemonpids = []
         self._finished = None
         self._ret = None
         self._out = None
         self._skipped = None
         self._testtmp = None
         self._chgsockdir = None
 
         self._refout = self.readrefout()
 
     def readrefout(self):
         """read reference output"""
         # If we're not in --debug mode and reference output file exists,
         # check test output against it.
         if self._debug:
             return None  # to match "out is None"
         elif os.path.exists(self.refpath):
             with open(self.refpath, 'rb') as f:
                 return f.read().splitlines(True)
         else:
             return []
 
     # needed to get base class __repr__ running
     @property
     def _testMethodName(self):
         return self.name
 
     def __str__(self):
         return self.name
 
     def shortDescription(self):
         return self.name
 
     def setUp(self):
         """Tasks to perform before run()."""
         self._finished = False
         self._ret = None
         self._out = None
         self._skipped = None
 
         try:
             os.mkdir(self._threadtmp)
         except OSError as e:
             if e.errno != errno.EEXIST:
                 raise
 
         name = self._tmpname
         self._testtmp = os.path.join(self._threadtmp, name)
         os.mkdir(self._testtmp)
 
         # Remove any previous output files.
         if os.path.exists(self.errpath):
             try:
                 os.remove(self.errpath)
             except OSError as e:
                 # We might have raced another test to clean up a .err
                 # file, so ignore ENOENT when removing a previous .err
                 # file.
                 if e.errno != errno.ENOENT:
                     raise
 
         if self._usechg:
             self._chgsockdir = os.path.join(
                 self._threadtmp, b'%s.chgsock' % name
             )
             os.mkdir(self._chgsockdir)
 
     def run(self, result):
         """Run this test and report results against a TestResult instance."""
         # This function is extremely similar to unittest.TestCase.run(). Once
         # we require Python 2.7 (or at least its version of unittest), this
         # function can largely go away.
         self._result = result
         result.startTest(self)
         try:
             try:
                 self.setUp()
             except (KeyboardInterrupt, SystemExit):
                 self._aborted = True
                 raise
             except Exception:
                 result.addError(self, sys.exc_info())
                 return
 
             success = False
             try:
                 self.runTest()
             except KeyboardInterrupt:
                 self._aborted = True
                 raise
             except unittest.SkipTest as e:
                 result.addSkip(self, str(e))
                 # The base class will have already counted this as a
                 # test we "ran", but we want to exclude skipped tests
                 # from those we count towards those run.
                 result.testsRun -= 1
             except self.failureException as e:
                 # This differs from unittest in that we don't capture
                 # the stack trace. This is for historical reasons and
                 # this decision could be revisited in the future,
                 # especially for PythonTest instances.
                 if result.addFailure(self, str(e)):
                     success = True
             except Exception:
                 result.addError(self, sys.exc_info())
             else:
                 success = True
 
             try:
                 self.tearDown()
             except (KeyboardInterrupt, SystemExit):
                 self._aborted = True
                 raise
             except Exception:
                 result.addError(self, sys.exc_info())
                 success = False
 
             if success:
                 result.addSuccess(self)
         finally:
             result.stopTest(self, interrupted=self._aborted)
 
     def runTest(self):
         """Run this test instance.
 
         This will return a tuple describing the result of the test.
         """
         env = self._getenv()
         self._genrestoreenv(env)
         self._daemonpids.append(env['DAEMON_PIDS'])
         self._createhgrc(env['HGRCPATH'])
 
         vlog('# Test', self.name)
 
         ret, out = self._run(env)
         self._finished = True
         self._ret = ret
         self._out = out
 
         def describe(ret):
             if ret < 0:
                 return 'killed by signal: %d' % -ret
             return 'returned error code %d' % ret
 
         self._skipped = False
 
         if ret == self.SKIPPED_STATUS:
             if out is None:  # Debug mode, nothing to parse.
                 missing = ['unknown']
                 failed = None
             else:
                 missing, failed = TTest.parsehghaveoutput(out)
 
             if not missing:
                 missing = ['skipped']
 
             if failed:
                 self.fail('hg have failed checking for %s' % failed[-1])
             else:
                 self._skipped = True
                 raise unittest.SkipTest(missing[-1])
         elif ret == 'timeout':
             self.fail('timed out')
         elif ret is False:
             self.fail('no result code from test')
         elif out != self._refout:
             # Diff generation may rely on written .err file.
             if (
                 (ret != 0 or out != self._refout)
                 and not self._skipped
                 and not self._debug
             ):
                 with open(self.errpath, 'wb') as f:
                     for line in out:
                         f.write(line)
 
             # The result object handles diff calculation for us.
             with firstlock:
                 if self._result.addOutputMismatch(self, ret, out, self._refout):
                     # change was accepted, skip failing
                     return
                 if self._first:
                     global firsterror
                     firsterror = True
 
             if ret:
                 msg = 'output changed and ' + describe(ret)
             else:
                 msg = 'output changed'
 
             self.fail(msg)
         elif ret:
             self.fail(describe(ret))
 
     def tearDown(self):
         """Tasks to perform after run()."""
         for entry in self._daemonpids:
             killdaemons(entry)
         self._daemonpids = []
 
         if self._keeptmpdir:
             log(
                 '\nKeeping testtmp dir: %s\nKeeping threadtmp dir: %s'
                 % (
                     _bytes2sys(self._testtmp),
                     _bytes2sys(self._threadtmp),
                 )
             )
         else:
             try:
                 shutil.rmtree(self._testtmp)
             except OSError:
                 # unreadable directory may be left in $TESTTMP; fix permission
                 # and try again
                 makecleanable(self._testtmp)
                 shutil.rmtree(self._testtmp, True)
             shutil.rmtree(self._threadtmp, True)
 
         if self._usechg:
             # chgservers will stop automatically after they find the socket
             # files are deleted
             shutil.rmtree(self._chgsockdir, True)
 
         if (
             (self._ret != 0 or self._out != self._refout)
             and not self._skipped
             and not self._debug
             and self._out
         ):
             with open(self.errpath, 'wb') as f:
                 for line in self._out:
                     f.write(line)
 
         vlog("# Ret was:", self._ret, '(%s)' % self.name)
 
     def _run(self, env):
         # This should be implemented in child classes to run tests.
         raise unittest.SkipTest('unknown test type')
 
     def abort(self):
         """Terminate execution of this test."""
         self._aborted = True
 
     def _portmap(self, i):
         offset = b'' if i == 0 else b'%d' % i
         return (br':%d\b' % (self._startport + i), b':$HGPORT%s' % offset)
 
     def _getreplacements(self):
         """Obtain a mapping of text replacements to apply to test output.
 
         Test output needs to be normalized so it can be compared to expected
         output. This function defines how some of that normalization will
         occur.
         """
         r = [
             # This list should be parallel to defineport in _getenv
             self._portmap(0),
             self._portmap(1),
             self._portmap(2),
             (br'([^0-9])%s' % re.escape(self._localip()), br'\1$LOCALIP'),
             (br'\bHG_TXNID=TXN:[a-f0-9]{40}\b', br'HG_TXNID=TXN:$ID$'),
         ]
         r.append((self._escapepath(self._testtmp), b'$TESTTMP'))
         if WINDOWS:
             # JSON output escapes backslashes in Windows paths, so also catch a
             # double-escape.
             replaced = self._testtmp.replace(b'\\', br'\\')
             r.append((self._escapepath(replaced), b'$STR_REPR_TESTTMP'))
 
         replacementfile = os.path.join(self._testdir, b'common-pattern.py')
 
         if os.path.exists(replacementfile):
             data = {}
             with open(replacementfile, mode='rb') as source:
                 # the intermediate 'compile' step help with debugging
                 code = compile(source.read(), replacementfile, 'exec')
                 exec(code, data)
                 for value in data.get('substitutions', ()):
                     if len(value) != 2:
                         msg = 'malformatted substitution in %s: %r'
                         msg %= (replacementfile, value)
                         raise ValueError(msg)
                     r.append(value)
         return r
 
     def _escapepath(self, p):
         if WINDOWS:
             return b''.join(
                 c.isalpha()
                 and b'[%s%s]' % (c.lower(), c.upper())
                 or c in b'/\\'
                 and br'[/\\]'
                 or c.isdigit()
                 and c
                 or b'\\' + c
                 for c in [p[i : i + 1] for i in range(len(p))]
             )
         else:
             return re.escape(p)
 
     def _localip(self):
         if self._useipv6:
             return b'::1'
         else:
             return b'127.0.0.1'
 
     def _genrestoreenv(self, testenv):
         """Generate a script that can be used by tests to restore the original
         environment."""
         # Put the restoreenv script inside self._threadtmp
         scriptpath = os.path.join(self._threadtmp, b'restoreenv.sh')
         testenv['HGTEST_RESTOREENV'] = _bytes2sys(scriptpath)
 
         # Only restore environment variable names that the shell allows
         # us to export.
         name_regex = re.compile('^[a-zA-Z][a-zA-Z0-9_]*$')
 
         # Do not restore these variables; otherwise tests would fail.
         reqnames = {'PYTHON', 'TESTDIR', 'TESTTMP'}
 
         with open(scriptpath, 'w') as envf:
             for name, value in origenviron.items():
                 if not name_regex.match(name):
                     # Skip environment variables with unusual names not
                     # allowed by most shells.
                     continue
                 if name in reqnames:
                     continue
                 envf.write('%s=%s\n' % (name, shellquote(value)))
 
             for name in testenv:
                 if name in origenviron or name in reqnames:
                     continue
                 envf.write('unset %s\n' % (name,))
 
     def _getenv(self):
         """Obtain environment variables to use during test execution."""
 
         def defineport(i):
             offset = '' if i == 0 else '%s' % i
             env["HGPORT%s" % offset] = '%s' % (self._startport + i)
 
         env = os.environ.copy()
         env['PYTHONUSERBASE'] = sysconfig.get_config_var('userbase') or ''
         env['HGEMITWARNINGS'] = '1'
         env['TESTTMP'] = _bytes2sys(self._testtmp)
         uid_file = os.path.join(_bytes2sys(self._testtmp), 'UID')
         env['HGTEST_UUIDFILE'] = uid_file
         env['TESTNAME'] = self.name
         env['HOME'] = _bytes2sys(self._testtmp)
         if WINDOWS:
             env['REALUSERPROFILE'] = env['USERPROFILE']
             # py3.8+ ignores HOME: https://bugs.python.org/issue36264
             env['USERPROFILE'] = env['HOME']
         formated_timeout = _bytes2sys(b"%d" % default_defaults['timeout'][1])
         env['HGTEST_TIMEOUT_DEFAULT'] = formated_timeout
         env['HGTEST_TIMEOUT'] = _bytes2sys(b"%d" % self._timeout)
         # This number should match portneeded in _getport
         for port in xrange(3):
             # This list should be parallel to _portmap in _getreplacements
             defineport(port)
         env["HGRCPATH"] = _bytes2sys(os.path.join(self._threadtmp, b'.hgrc'))
         env["DAEMON_PIDS"] = _bytes2sys(
             os.path.join(self._threadtmp, b'daemon.pids')
         )
         env["HGEDITOR"] = (
             '"' + sysexecutable + '"' + ' -c "import sys; sys.exit(0)"'
         )
         env["HGUSER"] = "test"
         env["HGENCODING"] = "ascii"
         env["HGENCODINGMODE"] = "strict"
         env["HGHOSTNAME"] = "test-hostname"
         env['HGIPV6'] = str(int(self._useipv6))
         # See contrib/catapipe.py for how to use this functionality.
         if 'HGTESTCATAPULTSERVERPIPE' not in env:
             # If we don't have HGTESTCATAPULTSERVERPIPE explicitly set, pull the
             # non-test one in as a default, otherwise set to devnull
             env['HGTESTCATAPULTSERVERPIPE'] = env.get(
                 'HGCATAPULTSERVERPIPE', os.devnull
             )
 
         extraextensions = []
         for opt in self._extraconfigopts:
             section, key = opt.split('.', 1)
             if section != 'extensions':
                 continue
             name = key.split('=', 1)[0]
             extraextensions.append(name)
 
         if extraextensions:
             env['HGTESTEXTRAEXTENSIONS'] = ' '.join(extraextensions)
 
         # LOCALIP could be ::1 or 127.0.0.1. Useful for tests that require raw
         # IP addresses.
         env['LOCALIP'] = _bytes2sys(self._localip())
 
         # This has the same effect as Py_LegacyWindowsStdioFlag in exewrapper.c,
         # but this is needed for testing python instances like dummyssh,
         # dummysmtpd.py, and dumbhttp.py.
         if PYTHON3 and WINDOWS:
             env['PYTHONLEGACYWINDOWSSTDIO'] = '1'
 
         # Modified HOME in test environment can confuse Rust tools. So set
         # CARGO_HOME and RUSTUP_HOME automatically if a Rust toolchain is
         # present and these variables aren't already defined.
         cargo_home_path = os.path.expanduser('~/.cargo')
         rustup_home_path = os.path.expanduser('~/.rustup')
 
         if os.path.exists(cargo_home_path) and b'CARGO_HOME' not in osenvironb:
             env['CARGO_HOME'] = cargo_home_path
         if (
             os.path.exists(rustup_home_path)
             and b'RUSTUP_HOME' not in osenvironb
         ):
             env['RUSTUP_HOME'] = rustup_home_path
 
         # Reset some environment variables to well-known values so that
         # the tests produce repeatable output.
         env['LANG'] = env['LC_ALL'] = env['LANGUAGE'] = 'C'
         env['TZ'] = 'GMT'
         env["EMAIL"] = "Foo Bar <[e-mail]>"
         env['COLUMNS'] = '80'
         env['TERM'] = 'xterm'
 
         dropped = [
             'CDPATH',
             'CHGDEBUG',
             'EDITOR',
             'GREP_OPTIONS',
             'HG',
             'HGMERGE',
             'HGPLAIN',
             'HGPLAINEXCEPT',
             'HGPROF',
             'http_proxy',
             'no_proxy',
             'NO_PROXY',
             'PAGER',
             'VISUAL',
         ]
 
         for k in dropped:
             if k in env:
                 del env[k]
 
         # unset env related to hooks
         for k in list(env):
             if k.startswith('HG_'):
                 del env[k]
 
         if self._usechg:
             env['CHGSOCKNAME'] = os.path.join(self._chgsockdir, b'server')
         if self._chgdebug:
             env['CHGDEBUG'] = 'true'
 
         return env
 
     def _createhgrc(self, path):
         """Create an hgrc file for this test."""
         with open(path, 'wb') as hgrc:
             hgrc.write(b'[ui]\n')
             hgrc.write(b'slash = True\n')
             hgrc.write(b'interactive = False\n')
             hgrc.write(b'detailed-exit-code = True\n')
             hgrc.write(b'merge = internal:merge\n')
             hgrc.write(b'mergemarkers = detailed\n')
             hgrc.write(b'promptecho = True\n')
             hgrc.write(b'timeout.warn=15\n')
             hgrc.write(b'[defaults]\n')
             hgrc.write(b'[devel]\n')
             hgrc.write(b'all-warnings = true\n')
             hgrc.write(b'default-date = 0 0\n')
             hgrc.write(b'[largefiles]\n')
             hgrc.write(
                 b'usercache = %s\n'
                 % (os.path.join(self._testtmp, b'.cache/largefiles'))
             )
             hgrc.write(b'[lfs]\n')
             hgrc.write(
                 b'usercache = %s\n'
                 % (os.path.join(self._testtmp, b'.cache/lfs'))
             )
             hgrc.write(b'[web]\n')
             hgrc.write(b'address = localhost\n')
             hgrc.write(b'ipv6 = %r\n' % self._useipv6)
             hgrc.write(b'server-header = testing stub value\n')
 
             for opt in self._extraconfigopts:
                 section, key = _sys2bytes(opt).split(b'.', 1)
                 assert b'=' in key, (
                     'extra config opt %s must ' 'have an = for assignment' % opt
                 )
                 hgrc.write(b'[%s]\n%s\n' % (section, key))
 
     def fail(self, msg):
         # unittest differentiates between errored and failed.
         # Failed is denoted by AssertionError (by default at least).
         raise AssertionError(msg)
 
     def _runcommand(self, cmd, env, normalizenewlines=False):
         """Run command in a sub-process, capturing the output (stdout and
         stderr).
 
         Return a tuple (exitcode, output). output is None in debug mode.
         """
         if self._debug:
             proc = subprocess.Popen(
                 _bytes2sys(cmd),
                 shell=True,
                 cwd=_bytes2sys(self._testtmp),
                 env=env,
             )
             ret = proc.wait()
             return (ret, None)
 
         proc = Popen4(cmd, self._testtmp, self._timeout, env)
 
         def cleanup():
             terminate(proc)
             ret = proc.wait()
             if ret == 0:
                 ret = signal.SIGTERM << 8
             killdaemons(env['DAEMON_PIDS'])
             return ret
 
         proc.tochild.close()
 
         try:
             output = proc.fromchild.read()
         except KeyboardInterrupt:
             vlog('# Handling keyboard interrupt')
             cleanup()
             raise
 
         ret = proc.wait()
         if wifexited(ret):
             ret = os.WEXITSTATUS(ret)
 
         if proc.timeout:
             ret = 'timeout'
 
         if ret:
             killdaemons(env['DAEMON_PIDS'])
 
         for s, r in self._getreplacements():
             output = re.sub(s, r, output)
 
         if normalizenewlines:
             output = output.replace(b'\r\n', b'\n')
 
         return ret, output.splitlines(True)
 
 
 class PythonTest(Test):
     """A Python-based test."""
 
     @property
     def refpath(self):
         return os.path.join(self._testdir, b'%s.out' % self.bname)
 
     def _run(self, env):
         # Quote the python(3) executable for Windows
         cmd = b'"%s" "%s"' % (PYTHON, self.path)
         vlog("# Running", cmd.decode("utf-8"))
         result = self._runcommand(cmd, env, normalizenewlines=WINDOWS)
         if self._aborted:
             raise KeyboardInterrupt()
 
         return result
 
 
 # Some glob patterns apply only in some circumstances, so the script
 # might want to remove (glob) annotations that otherwise should be
 # retained.
 checkcodeglobpats = [
     # On Windows it looks like \ doesn't require a (glob), but we know
     # better.
     re.compile(br'^pushing to \$TESTTMP/.*[^)]$'),
     re.compile(br'^moving \S+/.*[^)]$'),
     re.compile(br'^pulling from \$TESTTMP/.*[^)]$'),
     # Not all platforms have 127.0.0.1 as loopback (though most do),
     # so we always glob that too.
     re.compile(br'.*\$LOCALIP.*$'),
 ]
 
 bchr = chr
 if PYTHON3:
     bchr = lambda x: bytes([x])
 
 WARN_UNDEFINED = 1
 WARN_YES = 2
 WARN_NO = 3
 
 MARK_OPTIONAL = b" (?)\n"
 
 
 def isoptional(line):
     return line.endswith(MARK_OPTIONAL)
 
 
 class TTest(Test):
     """A "t test" is a test backed by a .t file."""
 
     SKIPPED_PREFIX = b'skipped: '
     FAILED_PREFIX = b'hghave check failed: '
     NEEDESCAPE = re.compile(br'[\x00-\x08\x0b-\x1f\x7f-\xff]').search
 
     ESCAPESUB = re.compile(br'[\x00-\x08\x0b-\x1f\\\x7f-\xff]').sub
     ESCAPEMAP = {bchr(i): br'\x%02x' % i for i in range(256)}
     ESCAPEMAP.update({b'\\': b'\\\\', b'\r': br'\r'})
 
     def __init__(self, path, *args, **kwds):
         # accept an extra "case" parameter
         case = kwds.pop('case', [])
         self._case = case
         self._allcases = {x for y in parsettestcases(path) for x in y}
         super(TTest, self).__init__(path, *args, **kwds)
         if case:
             casepath = b'#'.join(case)
             self.name = '%s#%s' % (self.name, _bytes2sys(casepath))
             self.errpath = b'%s#%s.err' % (self.errpath[:-4], casepath)
             self._tmpname += b'-%s' % casepath.replace(b'#', b'-')
         self._have = {}
 
     @property
     def refpath(self):
         return os.path.join(self._testdir, self.bname)
 
     def _run(self, env):
         with open(self.path, 'rb') as f:
             lines = f.readlines()
 
         # .t file is both reference output and the test input, keep reference
         # output updated with the the test input. This avoids some race
         # conditions where the reference output does not match the actual test.
         if self._refout is not None:
             self._refout = lines
 
         salt, script, after, expected = self._parsetest(lines)
 
         # Write out the generated script.
         fname = b'%s.sh' % self._testtmp
         with open(fname, 'wb') as f:
             for l in script:
                 f.write(l)
 
         cmd = b'%s "%s"' % (self._shell, fname)
         vlog("# Running", cmd.decode("utf-8"))
 
         exitcode, output = self._runcommand(cmd, env)
 
         if self._aborted:
             raise KeyboardInterrupt()
 
         # Do not merge output if skipped. Return hghave message instead.
         # Similarly, with --debug, output is None.
         if exitcode == self.SKIPPED_STATUS or output is None:
             return exitcode, output
 
         return self._processoutput(exitcode, output, salt, after, expected)
 
     def _hghave(self, reqs):
         allreqs = b' '.join(reqs)
 
         self._detectslow(reqs)
 
         if allreqs in self._have:
             return self._have.get(allreqs)
 
         # TODO do something smarter when all other uses of hghave are gone.
         runtestdir = osenvironb[b'RUNTESTDIR']
         tdir = runtestdir.replace(b'\\', b'/')
         proc = Popen4(
             b'%s -c "%s/hghave %s"' % (self._shell, tdir, allreqs),
             self._testtmp,
             0,
             self._getenv(),
         )
         stdout, stderr = proc.communicate()
         ret = proc.wait()
         if wifexited(ret):
             ret = os.WEXITSTATUS(ret)
         if ret == 2:
             print(stdout.decode('utf-8'))
             sys.exit(1)
 
         if ret != 0:
             self._have[allreqs] = (False, stdout)
             return False, stdout
 
         self._have[allreqs] = (True, None)
         return True, None
 
     def _detectslow(self, reqs):
         """update the timeout of slow test when appropriate"""
         if b'slow' in reqs:
             self._timeout = self._slowtimeout
 
     def _iftest(self, args):
         # implements "#if"
         reqs = []
         for arg in args:
             if arg.startswith(b'no-') and arg[3:] in self._allcases:
                 if arg[3:] in self._case:
                     return False
             elif arg in self._allcases:
                 if arg not in self._case:
                     return False
             else:
                 reqs.append(arg)
         self._detectslow(reqs)
         return self._hghave(reqs)[0]
 
     def _parsetest(self, lines):
         # We generate a shell script which outputs unique markers to line
         # up script results with our source. These markers include input
         # line number and the last return code.
         salt = b"SALT%d" % time.time()
 
         def addsalt(line, inpython):
             if inpython:
                 script.append(b'%s %d 0\n' % (salt, line))
             else:
                 script.append(b'echo %s %d $?\n' % (salt, line))
 
         activetrace = []
         session = str(uuid.uuid4())
         if PYTHON3:
             session = session.encode('ascii')
         hgcatapult = os.getenv('HGTESTCATAPULTSERVERPIPE') or os.getenv(
             'HGCATAPULTSERVERPIPE'
         )
 
         def toggletrace(cmd=None):
             if not hgcatapult or hgcatapult == os.devnull:
                 return
 
             if activetrace:
                 script.append(
                     b'echo END %s %s >> "$HGTESTCATAPULTSERVERPIPE"\n'
                     % (session, activetrace[0])
                 )
             if cmd is None:
                 return
 
             if isinstance(cmd, str):
                 quoted = shellquote(cmd.strip())
             else:
                 quoted = shellquote(cmd.strip().decode('utf8')).encode('utf8')
             quoted = quoted.replace(b'\\', b'\\\\')
             script.append(
                 b'echo START %s %s >> "$HGTESTCATAPULTSERVERPIPE"\n'
                 % (session, quoted)
             )
             activetrace[0:] = [quoted]
 
         script = []
 
         # After we run the shell script, we re-unify the script output
         # with non-active parts of the source, with synchronization by our
         # SALT line number markers. The after table contains the non-active
         # components, ordered by line number.
         after = {}
 
         # Expected shell script output.
         expected = {}
 
         pos = prepos = -1
 
         # True or False when in a true or false conditional section
         skipping = None
 
         # We keep track of whether or not we're in a Python block so we
         # can generate the surrounding doctest magic.
         inpython = False
 
         if self._debug:
             script.append(b'set -x\n')
         if self._hgcommand != b'hg':
             script.append(b'alias hg="%s"\n' % self._hgcommand)
         if os.getenv('MSYSTEM'):
             script.append(b'alias pwd="pwd -W"\n')
 
         if hgcatapult and hgcatapult != os.devnull:
             if PYTHON3:
                 hgcatapult = hgcatapult.encode('utf8')
                 cataname = self.name.encode('utf8')
             else:
                 cataname = self.name
 
             # Kludge: use a while loop to keep the pipe from getting
             # closed by our echo commands. The still-running file gets
             # reaped at the end of the script, which causes the while
             # loop to exit and closes the pipe. Sigh.
             script.append(
                 b'rtendtracing() {\n'
                 b'  echo END %(session)s %(name)s >> %(catapult)s\n'
                 b'  rm -f "$TESTTMP/.still-running"\n'
                 b'}\n'
                 b'trap "rtendtracing" 0\n'
                 b'touch "$TESTTMP/.still-running"\n'
                 b'while [ -f "$TESTTMP/.still-running" ]; do sleep 1; done '
                 b'> %(catapult)s &\n'
                 b'HGCATAPULTSESSION=%(session)s ; export HGCATAPULTSESSION\n'
                 b'echo START %(session)s %(name)s >> %(catapult)s\n'
                 % {
                     b'name': cataname,
                     b'session': session,
                     b'catapult': hgcatapult,
                 }
             )
 
         if self._case:
             casestr = b'#'.join(self._case)
             if isinstance(casestr, str):
                 quoted = shellquote(casestr)
             else:
                 quoted = shellquote(casestr.decode('utf8')).encode('utf8')
             script.append(b'TESTCASE=%s\n' % quoted)
             script.append(b'export TESTCASE\n')
 
         n = 0
         for n, l in enumerate(lines):
             if not l.endswith(b'\n'):
                 l += b'\n'
             if l.startswith(b'#require'):
                 lsplit = l.split()
                 if len(lsplit) < 2 or lsplit[0] != b'#require':
                     after.setdefault(pos, []).append(
                         b'  !!! invalid #require\n'
                     )
                 if not skipping:
                     haveresult, message = self._hghave(lsplit[1:])
                     if not haveresult:
                         script = [b'echo "%s"\nexit 80\n' % message]
                         break
                 after.setdefault(pos, []).append(l)
             elif l.startswith(b'#if'):
                 lsplit = l.split()
                 if len(lsplit) < 2 or lsplit[0] != b'#if':
                     after.setdefault(pos, []).append(b'  !!! invalid #if\n')
                 if skipping is not None:
                     after.setdefault(pos, []).append(b'  !!! nested #if\n')
                 skipping = not self._iftest(lsplit[1:])
                 after.setdefault(pos, []).append(l)
             elif l.startswith(b'#else'):
                 if skipping is None:
                     after.setdefault(pos, []).append(b'  !!! missing #if\n')
                 skipping = not skipping
                 after.setdefault(pos, []).append(l)
             elif l.startswith(b'#endif'):
                 if skipping is None:
                     after.setdefault(pos, []).append(b'  !!! missing #if\n')
                 skipping = None
                 after.setdefault(pos, []).append(l)
             elif skipping:
                 after.setdefault(pos, []).append(l)
             elif l.startswith(b'  >>> '):  # python inlines
                 after.setdefault(pos, []).append(l)
                 prepos = pos
                 pos = n
                 if not inpython:
                     # We've just entered a Python block. Add the header.
                     inpython = True
                     addsalt(prepos, False)  # Make sure we report the exit code.
                     script.append(b'"%s" -m heredoctest <<EOF\n' % PYTHON)
                 addsalt(n, True)
                 script.append(l[2:])
             elif l.startswith(b'  ... '):  # python inlines
                 after.setdefault(prepos, []).append(l)
                 script.append(l[2:])
             elif l.startswith(b'  $ '):  # commands
                 if inpython:
                     script.append(b'EOF\n')
                     inpython = False
                 after.setdefault(pos, []).append(l)
                 prepos = pos
                 pos = n
                 addsalt(n, False)
                 rawcmd = l[4:]
                 cmd = rawcmd.split()
                 toggletrace(rawcmd)
                 if len(cmd) == 2 and cmd[0] == b'cd':
                     rawcmd = b'cd %s || exit 1\n' % cmd[1]
                 script.append(rawcmd)
             elif l.startswith(b'  > '):  # continuations
                 after.setdefault(prepos, []).append(l)
                 script.append(l[4:])
             elif l.startswith(b'  '):  # results
                 # Queue up a list of expected results.
                 expected.setdefault(pos, []).append(l[2:])
             else:
                 if inpython:
                     script.append(b'EOF\n')
                     inpython = False
                 # Non-command/result. Queue up for merged output.
                 after.setdefault(pos, []).append(l)
 
         if inpython:
             script.append(b'EOF\n')
         if skipping is not None:
             after.setdefault(pos, []).append(b'  !!! missing #endif\n')
         addsalt(n + 1, False)
         # Need to end any current per-command trace
         if activetrace:
             toggletrace()
         return salt, script, after, expected
 
     def _processoutput(self, exitcode, output, salt, after, expected):
         # Merge the script output back into a unified test.
         warnonly = WARN_UNDEFINED  # 1: not yet; 2: yes; 3: for sure not
         if exitcode != 0:
             warnonly = WARN_NO
 
         pos = -1
         postout = []
         for out_rawline in output:
             out_line, cmd_line = out_rawline, None
             if salt in out_rawline:
                 out_line, cmd_line = out_rawline.split(salt, 1)
 
             pos, postout, warnonly = self._process_out_line(
                 out_line, pos, postout, expected, warnonly
             )
             pos, postout = self._process_cmd_line(cmd_line, pos, postout, after)
 
         if pos in after:
             postout += after.pop(pos)
 
         if warnonly == WARN_YES:
             exitcode = False  # Set exitcode to warned.
 
         return exitcode, postout
 
     def _process_out_line(self, out_line, pos, postout, expected, warnonly):
         while out_line:
             if not out_line.endswith(b'\n'):
                 out_line += b' (no-eol)\n'
 
             # Find the expected output at the current position.
             els = [None]
             if expected.get(pos, None):
                 els = expected[pos]
 
             optional = []
             for i, el in enumerate(els):
                 r = False
                 if el:
                     r, exact = self.linematch(el, out_line)
                 if isinstance(r, str):
                     if r == '-glob':
                         out_line = ''.join(el.rsplit(' (glob)', 1))
                         r = ''  # Warn only this line.
                     elif r == "retry":
                         postout.append(b'  ' + el)
                     else:
                         log('\ninfo, unknown linematch result: %r\n' % r)
                         r = False
                 if r:
                     els.pop(i)
                     break
                 if el:
                     if isoptional(el):
                         optional.append(i)
                     else:
                         m = optline.match(el)
                         if m:
                             conditions = [c for c in m.group(2).split(b' ')]
 
                             if not self._iftest(conditions):
                                 optional.append(i)
                     if exact:
                         # Don't allow line to be matches against a later
                         # line in the output
                         els.pop(i)
                         break
 
             if r:
                 if r == "retry":
                     continue
                 # clean up any optional leftovers
                 for i in optional:
                     postout.append(b'  ' + els[i])
                 for i in reversed(optional):
                     del els[i]
                 postout.append(b'  ' + el)
             else:
                 if self.NEEDESCAPE(out_line):
                     out_line = TTest._stringescape(
                         b'%s (esc)\n' % out_line.rstrip(b'\n')
                     )
                 postout.append(b'  ' + out_line)  # Let diff deal with it.
                 if r != '':  # If line failed.
                     warnonly = WARN_NO
                 elif warnonly == WARN_UNDEFINED:
                     warnonly = WARN_YES
             break
         else:
             # clean up any optional leftovers
             while expected.get(pos, None):
                 el = expected[pos].pop(0)
                 if el:
                     if not isoptional(el):
                         m = optline.match(el)
                         if m:
                             conditions = [c for c in m.group(2).split(b' ')]
 
                             if self._iftest(conditions):
                                 # Don't append as optional line
                                 continue
                         else:
                             continue
                 postout.append(b'  ' + el)
         return pos, postout, warnonly
 
     def _process_cmd_line(self, cmd_line, pos, postout, after):
         """process a "command" part of a line from unified test output"""
         if cmd_line:
             # Add on last return code.
             ret = int(cmd_line.split()[1])
             if ret != 0:
                 postout.append(b'  [%d]\n' % ret)
             if pos in after:
                 # Merge in non-active test bits.
                 postout += after.pop(pos)
             pos = int(cmd_line.split()[0])
         return pos, postout
 
     @staticmethod
     def rematch(el, l):
         try:
             # parse any flags at the beginning of the regex. Only 'i' is
             # supported right now, but this should be easy to extend.
             flags, el = re.match(br'^(\(\?i\))?(.*)', el).groups()[0:2]
             flags = flags or b''
             el = flags + b'(?:' + el + b')'
             # use \Z to ensure that the regex matches to the end of the string
             if WINDOWS:
                 return re.match(el + br'\r?\n\Z', l)
             return re.match(el + br'\n\Z', l)
         except re.error:
             # el is an invalid regex
             return False
 
     @staticmethod
     def globmatch(el, l):
         # The only supported special characters are * and ? plus / which also
         # matches \ on windows. Escaping of these characters is supported.
         if el + b'\n' == l:
             if os.altsep:
                 # matching on "/" is not needed for this line
                 for pat in checkcodeglobpats:
                     if pat.match(el):
                         return True
                 return b'-glob'
             return True
         el = el.replace(b'$LOCALIP', b'*')
         i, n = 0, len(el)
         res = b''
         while i < n:
             c = el[i : i + 1]
             i += 1
             if c == b'\\' and i < n and el[i : i + 1] in b'*?\\/':
                 res += el[i - 1 : i + 1]
                 i += 1
             elif c == b'*':
                 res += b'.*'
             elif c == b'?':
                 res += b'.'
             elif c == b'/' and os.altsep:
                 res += b'[/\\\\]'
             else:
                 res += re.escape(c)
         return TTest.rematch(res, l)
 
     def linematch(self, el, l):
         if el == l:  # perfect match (fast)
             return True, True
         retry = False
         if isoptional(el):
             retry = "retry"
             el = el[: -len(MARK_OPTIONAL)] + b"\n"
         else:
             m = optline.match(el)
             if m:
                 conditions = [c for c in m.group(2).split(b' ')]
 
                 el = m.group(1) + b"\n"
                 if not self._iftest(conditions):
                     # listed feature missing, should not match
                     return "retry", False
 
         if el.endswith(b" (esc)\n"):
             if PYTHON3:
                 el = el[:-7].decode('unicode_escape') + '\n'
                 el = el.encode('latin-1')
             else:
                 el = el[:-7].decode('string-escape') + '\n'
         if el == l or WINDOWS and el[:-1] + b'\r\n' == l:
             return True, True
         if el.endswith(b" (re)\n"):
             return (TTest.rematch(el[:-6], l) or retry), False
         if el.endswith(b" (glob)\n"):
             # ignore '(glob)' added to l by 'replacements'
             if l.endswith(b" (glob)\n"):
                 l = l[:-8] + b"\n"
             return (TTest.globmatch(el[:-8], l) or retry), False
         if os.altsep:
             _l = l.replace(b'\\', b'/')
             if el == _l or WINDOWS and el[:-1] + b'\r\n' == _l:
                 return True, True
         return retry, True
 
     @staticmethod
     def parsehghaveoutput(lines):
         """Parse hghave log lines.
 
         Return tuple of lists (missing, failed):
           * the missing/unknown features
           * the features for which existence check failed"""
         missing = []
         failed = []
         for line in lines:
             if line.startswith(TTest.SKIPPED_PREFIX):
                 line = line.splitlines()[0]
                 missing.append(_bytes2sys(line[len(TTest.SKIPPED_PREFIX) :]))
             elif line.startswith(TTest.FAILED_PREFIX):
                 line = line.splitlines()[0]
                 failed.append(_bytes2sys(line[len(TTest.FAILED_PREFIX) :]))
 
         return missing, failed
 
     @staticmethod
     def _escapef(m):
         return TTest.ESCAPEMAP[m.group(0)]
 
     @staticmethod
     def _stringescape(s):
         return TTest.ESCAPESUB(TTest._escapef, s)
 
 
 iolock = threading.RLock()
 firstlock = threading.RLock()
 firsterror = False
 
 
 class TestResult(unittest._TextTestResult):
     """Holds results when executing via unittest."""
 
     # Don't worry too much about accessing the non-public _TextTestResult.
     # It is relatively common in Python testing tools.
     def __init__(self, options, *args, **kwargs):
         super(TestResult, self).__init__(*args, **kwargs)
 
         self._options = options
 
         # unittest.TestResult didn't have skipped until 2.7. We need to
         # polyfill it.
         self.skipped = []
 
         # We have a custom "ignored" result that isn't present in any Python
         # unittest implementation. It is very similar to skipped. It may make
         # sense to map it into skip some day.
         self.ignored = []
 
         self.times = []
         self._firststarttime = None
         # Data stored for the benefit of generating xunit reports.
         self.successes = []
         self.faildata = {}
 
         if options.color == 'auto':
             isatty = self.stream.isatty()
             # For some reason, redirecting stdout on Windows disables the ANSI
             # color processing of stderr, which is what is used to print the
             # output.  Therefore, both must be tty on Windows to enable color.
             if WINDOWS:
                 isatty = isatty and sys.stdout.isatty()
             self.color = pygmentspresent and isatty
         elif options.color == 'never':
             self.color = False
         else:  # 'always', for testing purposes
             self.color = pygmentspresent
 
     def onStart(self, test):
         """Can be overriden by custom TestResult"""
 
     def onEnd(self):
         """Can be overriden by custom TestResult"""
 
     def addFailure(self, test, reason):
         self.failures.append((test, reason))
 
         if self._options.first:
             self.stop()
         else:
             with iolock:
                 if reason == "timed out":
                     self.stream.write('t')
                 else:
                     if not self._options.nodiff:
                         self.stream.write('\n')
                         # Exclude the '\n' from highlighting to lex correctly
                         formatted = 'ERROR: %s output changed\n' % test
                         self.stream.write(highlightmsg(formatted, self.color))
                     self.stream.write('!')
 
                 self.stream.flush()
 
     def addSuccess(self, test):
         with iolock:
             super(TestResult, self).addSuccess(test)
         self.successes.append(test)
 
     def addError(self, test, err):
         super(TestResult, self).addError(test, err)
         if self._options.first:
             self.stop()
 
     # Polyfill.
     def addSkip(self, test, reason):
         self.skipped.append((test, reason))
         with iolock:
             if self.showAll:
                 self.stream.writeln('skipped %s' % reason)
             else:
                 self.stream.write('s')
                 self.stream.flush()
 
     def addIgnore(self, test, reason):
         self.ignored.append((test, reason))
         with iolock:
             if self.showAll:
                 self.stream.writeln('ignored %s' % reason)
             else:
                 if reason not in ('not retesting', "doesn't match keyword"):
                     self.stream.write('i')
                 else:
                     self.testsRun += 1
                 self.stream.flush()
 
     def addOutputMismatch(self, test, ret, got, expected):
         """Record a mismatch in test output for a particular test."""
         if self.shouldStop or firsterror:
             # don't print, some other test case already failed and
             # printed, we're just stale and probably failed due to our
             # temp dir getting cleaned up.
             return
 
         accepted = False
         lines = []
 
         with iolock:
             if self._options.nodiff:
                 pass
             elif self._options.view:
                 v = self._options.view
                 subprocess.call(
                     r'"%s" "%s" "%s"'
                     % (v, _bytes2sys(test.refpath), _bytes2sys(test.errpath)),
                     shell=True,
                 )
             else:
                 servefail, lines = getdiff(
                     expected, got, test.refpath, test.errpath
                 )
                 self.stream.write('\n')
                 for line in lines:
                     line = highlightdiff(line, self.color)
                     if PYTHON3:
                         self.stream.flush()
                         self.stream.buffer.write(line)
                         self.stream.buffer.flush()
                     else:
                         self.stream.write(line)
                         self.stream.flush()
 
                 if servefail:
                     raise test.failureException(
                         'server failed to start (HGPORT=%s)' % test._startport
                     )
 
             # handle interactive prompt without releasing iolock
             if self._options.interactive:
                 if test.readrefout() != expected:
                     self.stream.write(
                         'Reference output has changed (run again to prompt '
                         'changes)'
                     )
                 else:
                     self.stream.write('Accept this change? [y/N] ')
                     self.stream.flush()
                     answer = sys.stdin.readline().strip()
                     if answer.lower() in ('y', 'yes'):
                         if test.path.endswith(b'.t'):
                             rename(test.errpath, test.path)
                         else:
                             rename(test.errpath, b'%s.out' % test.path)
                         accepted = True
             if not accepted:
                 self.faildata[test.name] = b''.join(lines)
 
         return accepted
 
     def startTest(self, test):
         super(TestResult, self).startTest(test)
 
         # os.times module computes the user time and system time spent by
         # child's processes along with real elapsed time taken by a process.
         # This module has one limitation. It can only work for Linux user
         # and not for Windows. Hence why we fall back to another function
         # for wall time calculations.
         test.started_times = os.times()
         # TODO use a monotonic clock once support for Python 2.7 is dropped.
         test.started_time = time.time()
         if self._firststarttime is None:  # thread racy but irrelevant
             self._firststarttime = test.started_time
 
     def stopTest(self, test, interrupted=False):
         super(TestResult, self).stopTest(test)
 
         test.stopped_times = os.times()
         stopped_time = time.time()
 
         starttime = test.started_times
         endtime = test.stopped_times
         origin = self._firststarttime
         self.times.append(
             (
                 test.name,
                 endtime[2] - starttime[2],  # user space CPU time
                 endtime[3] - starttime[3],  # sys  space CPU time
                 stopped_time - test.started_time,  # real time
                 test.started_time - origin,  # start date in run context
                 stopped_time - origin,  # end date in run context
             )
         )
 
         if interrupted:
             with iolock:
                 self.stream.writeln(
                     'INTERRUPTED: %s (after %d seconds)'
                     % (test.name, self.times[-1][3])
                 )
 
 
 def getTestResult():
     """
     Returns the relevant test result
     """
     if "CUSTOM_TEST_RESULT" in os.environ:
         testresultmodule = __import__(os.environ["CUSTOM_TEST_RESULT"])
         return testresultmodule.TestResult
     else:
         return TestResult
 
 
 class TestSuite(unittest.TestSuite):
     """Custom unittest TestSuite that knows how to execute Mercurial tests."""
 
     def __init__(
         self,
         testdir,
         jobs=1,
         whitelist=None,
         blacklist=None,
         keywords=None,
         loop=False,
         runs_per_test=1,
         loadtest=None,
         showchannels=False,
         *args,
         **kwargs
     ):
         """Create a new instance that can run tests with a configuration.
 
         testdir specifies the directory where tests are executed from. This
         is typically the ``tests`` directory from Mercurial's source
         repository.
 
         jobs specifies the number of jobs to run concurrently. Each test
         executes on its own thread. Tests actually spawn new processes, so
         state mutation should not be an issue.
 
         If there is only one job, it will use the main thread.
 
         whitelist and blacklist denote tests that have been whitelisted and
         blacklisted, respectively. These arguments don't belong in TestSuite.
         Instead, whitelist and blacklist should be handled by the thing that
         populates the TestSuite with tests. They are present to preserve
         backwards compatible behavior which reports skipped tests as part
         of the results.
 
         keywords denotes key words that will be used to filter which tests
         to execute. This arguably belongs outside of TestSuite.
 
         loop denotes whether to loop over tests forever.
         """
         super(TestSuite, self).__init__(*args, **kwargs)
 
         self._jobs = jobs
         self._whitelist = whitelist
         self._blacklist = blacklist
         self._keywords = keywords
         self._loop = loop
         self._runs_per_test = runs_per_test
         self._loadtest = loadtest
         self._showchannels = showchannels
 
     def run(self, result):
         # We have a number of filters that need to be applied. We do this
         # here instead of inside Test because it makes the running logic for
         # Test simpler.
         tests = []
         num_tests = [0]
         for test in self._tests:
 
             def get():
                 num_tests[0] += 1
                 if getattr(test, 'should_reload', False):
                     return self._loadtest(test, num_tests[0])
                 return test
 
             if not os.path.exists(test.path):
                 result.addSkip(test, "Doesn't exist")
                 continue
 
             is_whitelisted = self._whitelist and (
                 test.relpath in self._whitelist or test.bname in self._whitelist
             )
             if not is_whitelisted:
                 is_blacklisted = self._blacklist and (
                     test.relpath in self._blacklist
                     or test.bname in self._blacklist
                 )
                 if is_blacklisted:
                     result.addSkip(test, 'blacklisted')
                     continue
                 if self._keywords:
                     with open(test.path, 'rb') as f:
                         t = f.read().lower() + test.bname.lower()
                     ignored = False
                     for k in self._keywords.lower().split():
                         if k not in t:
                             result.addIgnore(test, "doesn't match keyword")
                             ignored = True
                             break
 
                     if ignored:
                         continue
             for _ in xrange(self._runs_per_test):
                 tests.append(get())
 
         runtests = list(tests)
         done = queue.Queue()
         running = 0
 
         channels = [""] * self._jobs
 
         def job(test, result):
             for n, v in enumerate(channels):
                 if not v:
                     channel = n
                     break
             else:
                 raise ValueError('Could not find output channel')
             channels[channel] = "=" + test.name[5:].split(".")[0]
             try:
                 test(result)
                 done.put(None)
             except KeyboardInterrupt:
                 pass
             except:  # re-raises
                 done.put(('!', test, 'run-test raised an error, see traceback'))
                 raise
             finally:
                 try:
                     channels[channel] = ''
                 except IndexError:
                     pass
 
         def stat():
             count = 0
             while channels:
                 d = '\n%03s  ' % count
                 for n, v in enumerate(channels):
                     if v:
                         d += v[0]
                         channels[n] = v[1:] or '.'
                     else:
                         d += ' '
                     d += ' '
                 with iolock:
                     sys.stdout.write(d + '  ')
                     sys.stdout.flush()
                 for x in xrange(10):
                     if channels:
                         time.sleep(0.1)
                 count += 1
 
         stoppedearly = False
 
         if self._showchannels:
             statthread = threading.Thread(target=stat, name="stat")
             statthread.start()
 
         try:
             while tests or running:
                 if not done.empty() or running == self._jobs or not tests:
                     try:
                         done.get(True, 1)
                         running -= 1
                         if result and result.shouldStop:
                             stoppedearly = True
                             break
                     except queue.Empty:
                         continue
                 if tests and not running == self._jobs:
                     test = tests.pop(0)
                     if self._loop:
                         if getattr(test, 'should_reload', False):
                             num_tests[0] += 1
                             tests.append(self._loadtest(test, num_tests[0]))
                         else:
                             tests.append(test)
                     if self._jobs == 1:
                         job(test, result)
                     else:
                         t = threading.Thread(
                             target=job, name=test.name, args=(test, result)
                         )
                         t.start()
                     running += 1
 
             # If we stop early we still need to wait on started tests to
             # finish. Otherwise, there is a race between the test completing
             # and the test's cleanup code running. This could result in the
             # test reporting incorrect.
             if stoppedearly:
                 while running:
                     try:
                         done.get(True, 1)
                         running -= 1
                     except queue.Empty:
                         continue
         except KeyboardInterrupt:
             for test in runtests:
                 test.abort()
 
         channels = []
 
         return result
 
 
 # Save the most recent 5 wall-clock runtimes of each test to a
 # human-readable text file named .testtimes. Tests are sorted
 # alphabetically, while times for each test are listed from oldest to
 # newest.
 
 
 def loadtimes(outputdir):
     times = []
     try:
         with open(os.path.join(outputdir, b'.testtimes')) as fp:
             for line in fp:
                 m = re.match('(.*?) ([0-9. ]+)', line)
                 times.append(
                     (m.group(1), [float(t) for t in m.group(2).split()])
                 )
     except IOError as err:
         if err.errno != errno.ENOENT:
             raise
     return times
 
 
 def savetimes(outputdir, result):
     saved = dict(loadtimes(outputdir))
     maxruns = 5
     skipped = {str(t[0]) for t in result.skipped}
     for tdata in result.times:
         test, real = tdata[0], tdata[3]
         if test not in skipped:
             ts = saved.setdefault(test, [])
             ts.append(real)
             ts[:] = ts[-maxruns:]
 
     fd, tmpname = tempfile.mkstemp(
         prefix=b'.testtimes', dir=outputdir, text=True
     )
     with os.fdopen(fd, 'w') as fp:
         for name, ts in sorted(saved.items()):
             fp.write('%s %s\n' % (name, ' '.join(['%.3f' % (t,) for t in ts])))
     timepath = os.path.join(outputdir, b'.testtimes')
     try:
         os.unlink(timepath)
     except OSError:
         pass
     try:
         os.rename(tmpname, timepath)
     except OSError:
         pass
 
 
 class TextTestRunner(unittest.TextTestRunner):
     """Custom unittest test runner that uses appropriate settings."""
 
     def __init__(self, runner, *args, **kwargs):
         super(TextTestRunner, self).__init__(*args, **kwargs)
 
         self._runner = runner
 
         self._result = getTestResult()(
             self._runner.options, self.stream, self.descriptions, self.verbosity
         )
 
     def listtests(self, test):
         test = sorted(test, key=lambda t: t.name)
 
         self._result.onStart(test)
 
         for t in test:
             print(t.name)
             self._result.addSuccess(t)
 
         if self._runner.options.xunit:
             with open(self._runner.options.xunit, "wb") as xuf:
                 self._writexunit(self._result, xuf)
 
         if self._runner.options.json:
             jsonpath = os.path.join(self._runner._outputdir, b'report.json')
             with open(jsonpath, 'w') as fp:
                 self._writejson(self._result, fp)
 
         return self._result
 
     def run(self, test):
         self._result.onStart(test)
         test(self._result)
 
         failed = len(self._result.failures)
         skipped = len(self._result.skipped)
         ignored = len(self._result.ignored)
 
         with iolock:
             self.stream.writeln('')
 
             if not self._runner.options.noskips:
                 for test, msg in sorted(
                     self._result.skipped, key=lambda s: s[0].name
                 ):
                     formatted = 'Skipped %s: %s\n' % (test.name, msg)
                     msg = highlightmsg(formatted, self._result.color)
                     self.stream.write(msg)
             for test, msg in sorted(
                 self._result.failures, key=lambda f: f[0].name
             ):
                 formatted = 'Failed %s: %s\n' % (test.name, msg)
                 self.stream.write(highlightmsg(formatted, self._result.color))
             for test, msg in sorted(
                 self._result.errors, key=lambda e: e[0].name
             ):
                 self.stream.writeln('Errored %s: %s' % (test.name, msg))
 
             if self._runner.options.xunit:
                 with open(self._runner.options.xunit, "wb") as xuf:
                     self._writexunit(self._result, xuf)
 
             if self._runner.options.json:
                 jsonpath = os.path.join(self._runner._outputdir, b'report.json')
                 with open(jsonpath, 'w') as fp:
                     self._writejson(self._result, fp)
 
             self._runner._checkhglib('Tested')
 
             savetimes(self._runner._outputdir, self._result)
 
             if failed and self._runner.options.known_good_rev:
                 self._bisecttests(t for t, m in self._result.failures)
             self.stream.writeln(
                 '# Ran %d tests, %d skipped, %d failed.'
                 % (self._result.testsRun, skipped + ignored, failed)
             )
             if failed:
                 self.stream.writeln(
                     'python hash seed: %s' % os.environ['PYTHONHASHSEED']
                 )
             if self._runner.options.time:
                 self.printtimes(self._result.times)
 
             if self._runner.options.exceptions:
                 exceptions = aggregateexceptions(
                     os.path.join(self._runner._outputdir, b'exceptions')
                 )
 
                 self.stream.writeln('Exceptions Report:')
                 self.stream.writeln(
                     '%d total from %d frames'
                     % (exceptions['total'], len(exceptions['exceptioncounts']))
                 )
                 combined = exceptions['combined']
                 for key in sorted(combined, key=combined.get, reverse=True):
                     frame, line, exc = key
                     totalcount, testcount, leastcount, leasttest = combined[key]
 
                     self.stream.writeln(
                         '%d (%d tests)\t%s: %s (%s - %d total)'
                         % (
                             totalcount,
                             testcount,
                             frame,
                             exc,
                             leasttest,
                             leastcount,
                         )
                     )
 
             self.stream.flush()
 
         return self._result
 
     def _bisecttests(self, tests):
         bisectcmd = ['hg', 'bisect']
         bisectrepo = self._runner.options.bisect_repo
         if bisectrepo:
             bisectcmd.extend(['-R', os.path.abspath(bisectrepo)])
 
         def pread(args):
             env = os.environ.copy()
             env['HGPLAIN'] = '1'
             p = subprocess.Popen(
                 args, stderr=subprocess.STDOUT, stdout=subprocess.PIPE, env=env
             )
             data = p.stdout.read()
             p.wait()
             return data
 
         for test in tests:
             pread(bisectcmd + ['--reset']),
             pread(bisectcmd + ['--bad', '.'])
             pread(bisectcmd + ['--good', self._runner.options.known_good_rev])
             # TODO: we probably need to forward more options
             # that alter hg's behavior inside the tests.
             opts = ''
             withhg = self._runner.options.with_hg
             if withhg:
                 opts += ' --with-hg=%s ' % shellquote(_bytes2sys(withhg))
             rtc = '%s %s %s %s' % (sysexecutable, sys.argv[0], opts, test)
             data = pread(bisectcmd + ['--command', rtc])
             m = re.search(
                 (
                     br'\nThe first (?P<goodbad>bad|good) revision '
                     br'is:\nchangeset: +\d+:(?P<node>[a-f0-9]+)\n.*\n'
                     br'summary: +(?P<summary>[^\n]+)\n'
                 ),
                 data,
                 (re.MULTILINE | re.DOTALL),
             )
             if m is None:
                 self.stream.writeln(
                     'Failed to identify failure point for %s' % test
                 )
                 continue
             dat = m.groupdict()
             verb = 'broken' if dat['goodbad'] == b'bad' else 'fixed'
             self.stream.writeln(
                 '%s %s by %s (%s)'
                 % (
                     test,
                     verb,
                     dat['node'].decode('ascii'),
                     dat['summary'].decode('utf8', 'ignore'),
                 )
             )
 
     def printtimes(self, times):
         # iolock held by run
         self.stream.writeln('# Producing time report')
         times.sort(key=lambda t: (t[3]))
         cols = '%7.3f %7.3f %7.3f %7.3f %7.3f   %s'
         self.stream.writeln(
             '%-7s %-7s %-7s %-7s %-7s   %s'
             % ('start', 'end', 'cuser', 'csys', 'real', 'Test')
         )
         for tdata in times:
             test = tdata[0]
             cuser, csys, real, start, end = tdata[1:6]
             self.stream.writeln(cols % (start, end, cuser, csys, real, test))
 
     @staticmethod
     def _writexunit(result, outf):
         # See http://llg.cubic.org/docs/junit/ for a reference.
         timesd = {t[0]: t[3] for t in result.times}
         doc = minidom.Document()
         s = doc.createElement('testsuite')
         s.setAttribute('errors', "0")  # TODO
         s.setAttribute('failures', str(len(result.failures)))
         s.setAttribute('name', 'run-tests')
         s.setAttribute(
             'skipped', str(len(result.skipped) + len(result.ignored))
         )
         s.setAttribute('tests', str(result.testsRun))
         doc.appendChild(s)
         for tc in result.successes:
             t = doc.createElement('testcase')
             t.setAttribute('name', tc.name)
             tctime = timesd.get(tc.name)
             if tctime is not None:
                 t.setAttribute('time', '%.3f' % tctime)
             s.appendChild(t)
         for tc, err in sorted(result.faildata.items()):
             t = doc.createElement('testcase')
             t.setAttribute('name', tc)
             tctime = timesd.get(tc)
             if tctime is not None:
                 t.setAttribute('time', '%.3f' % tctime)
             # createCDATASection expects a unicode or it will
             # convert using default conversion rules, which will
             # fail if string isn't ASCII.
             err = cdatasafe(err).decode('utf-8', 'replace')
             cd = doc.createCDATASection(err)
             # Use 'failure' here instead of 'error' to match errors = 0,
             # failures = len(result.failures) in the testsuite element.
             failelem = doc.createElement('failure')
             failelem.setAttribute('message', 'output changed')
             failelem.setAttribute('type', 'output-mismatch')
             failelem.appendChild(cd)
             t.appendChild(failelem)
             s.appendChild(t)
         for tc, message in result.skipped:
             # According to the schema, 'skipped' has no attributes. So store
             # the skip message as a text node instead.
             t = doc.createElement('testcase')
             t.setAttribute('name', tc.name)
             binmessage = message.encode('utf-8')
             message = cdatasafe(binmessage).decode('utf-8', 'replace')
             cd = doc.createCDATASection(message)
             skipelem = doc.createElement('skipped')
             skipelem.appendChild(cd)
             t.appendChild(skipelem)
             s.appendChild(t)
         outf.write(doc.toprettyxml(indent='  ', encoding='utf-8'))
 
     @staticmethod
     def _writejson(result, outf):
         timesd = {}
         for tdata in result.times:
             test = tdata[0]
             timesd[test] = tdata[1:]
 
         outcome = {}
         groups = [
             ('success', ((tc, None) for tc in result.successes)),
             ('failure', result.failures),
             ('skip', result.skipped),
         ]
         for res, testcases in groups:
             for tc, __ in testcases:
                 if tc.name in timesd:
                     diff = result.faildata.get(tc.name, b'')
                     try:
                         diff = diff.decode('unicode_escape')
                     except UnicodeDecodeError as e:
                         diff = '%r decoding diff, sorry' % e
                     tres = {
                         'result': res,
                         'time': ('%0.3f' % timesd[tc.name][2]),
                         'cuser': ('%0.3f' % timesd[tc.name][0]),
                         'csys': ('%0.3f' % timesd[tc.name][1]),
                         'start': ('%0.3f' % timesd[tc.name][3]),
                         'end': ('%0.3f' % timesd[tc.name][4]),
                         'diff': diff,
                     }
                 else:
                     # blacklisted test
                     tres = {'result': res}
 
                 outcome[tc.name] = tres
         jsonout = json.dumps(
             outcome, sort_keys=True, indent=4, separators=(',', ': ')
         )
         outf.writelines(("testreport =", jsonout))
 
 
 def sorttests(testdescs, previoustimes, shuffle=False):
     """Do an in-place sort of tests."""
     if shuffle:
         random.shuffle(testdescs)
         return
 
     if previoustimes:
 
         def sortkey(f):
             f = f['path']
             if f in previoustimes:
                 # Use most recent time as estimate
                 return -(previoustimes[f][-1])
             else:
                 # Default to a rather arbitrary value of 1 second for new tests
                 return -1.0
 
     else:
         # keywords for slow tests
         slow = {
             b'svn': 10,
             b'cvs': 10,
             b'hghave': 10,
             b'largefiles-update': 10,
             b'run-tests': 10,
             b'corruption': 10,
             b'race': 10,
             b'i18n': 10,
             b'check': 100,
             b'gendoc': 100,
             b'contrib-perf': 200,
             b'merge-combination': 100,
         }
         perf = {}
 
         def sortkey(f):
             # run largest tests first, as they tend to take the longest
             f = f['path']
             try:
                 return perf[f]
             except KeyError:
                 try:
                     val = -os.stat(f).st_size
                 except OSError as e:
                     if e.errno != errno.ENOENT:
                         raise
                     perf[f] = -1e9  # file does not exist, tell early
                     return -1e9
                 for kw, mul in slow.items():
                     if kw in f:
                         val *= mul
                 if f.endswith(b'.py'):
                     val /= 10.0
                 perf[f] = val / 1000.0
                 return perf[f]
 
     testdescs.sort(key=sortkey)
 
 
 class TestRunner(object):
     """Holds context for executing tests.
 
     Tests rely on a lot of state. This object holds it for them.
     """
 
     # Programs required to run tests.
     REQUIREDTOOLS = [
         b'diff',
         b'grep',
         b'unzip',
         b'gunzip',
         b'bunzip2',
         b'sed',
     ]
 
     # Maps file extensions to test class.
     TESTTYPES = [
         (b'.py', PythonTest),
         (b'.t', TTest),
     ]
 
     def __init__(self):
         self.options = None
         self._hgroot = None
         self._testdir = None
         self._outputdir = None
         self._hgtmp = None
         self._installdir = None
         self._bindir = None
         # a place for run-tests.py to generate executable it needs
         self._custom_bin_dir = None
         self._pythondir = None
         # True if we had to infer the pythondir from --with-hg
         self._pythondir_inferred = False
         self._coveragefile = None
         self._createdfiles = []
         self._hgcommand = None
         self._hgpath = None
         self._portoffset = 0
         self._ports = {}
 
     def run(self, args, parser=None):
         """Run the test suite."""
         oldmask = os.umask(0o22)
         try:
             parser = parser or getparser()
             options = parseargs(args, parser)
             tests = [_sys2bytes(a) for a in options.tests]
             if options.test_list is not None:
                 for listfile in options.test_list:
                     with open(listfile, 'rb') as f:
                         tests.extend(t for t in f.read().splitlines() if t)
             self.options = options
 
             self._checktools()
             testdescs = self.findtests(tests)
             if options.profile_runner:
                 import statprof
 
                 statprof.start()
             result = self._run(testdescs)
             if options.profile_runner:
                 statprof.stop()
                 statprof.display()
             return result
 
         finally:
             os.umask(oldmask)
 
     def _run(self, testdescs):
         testdir = getcwdb()
         self._testdir = osenvironb[b'TESTDIR'] = getcwdb()
         # assume all tests in same folder for now
         if testdescs:
             pathname = os.path.dirname(testdescs[0]['path'])
             if pathname:
                 testdir = os.path.join(testdir, pathname)
         self._testdir = osenvironb[b'TESTDIR'] = testdir
         if self.options.outputdir:
             self._outputdir = canonpath(_sys2bytes(self.options.outputdir))
         else:
             self._outputdir = getcwdb()
             if testdescs and pathname:
                 self._outputdir = os.path.join(self._outputdir, pathname)
         previoustimes = {}
         if self.options.order_by_runtime:
             previoustimes = dict(loadtimes(self._outputdir))
         sorttests(testdescs, previoustimes, shuffle=self.options.random)
 
         if 'PYTHONHASHSEED' not in os.environ:
             # use a random python hash seed all the time
             # we do the randomness ourself to know what seed is used
             os.environ['PYTHONHASHSEED'] = str(random.getrandbits(32))
 
         # Rayon (Rust crate for multi-threading) will use all logical CPU cores
         # by default, causing thrashing on high-cpu-count systems.
         # Setting its limit to 3 during tests should still let us uncover
         # multi-threading bugs while keeping the thrashing reasonable.
         os.environ.setdefault("RAYON_NUM_THREADS", "3")
 
         if self.options.tmpdir:
             self.options.keep_tmpdir = True
             tmpdir = _sys2bytes(self.options.tmpdir)
             if os.path.exists(tmpdir):
                 # Meaning of tmpdir has changed since 1.3: we used to create
                 # HGTMP inside tmpdir; now HGTMP is tmpdir.  So fail if
                 # tmpdir already exists.
                 print("error: temp dir %r already exists" % tmpdir)
                 return 1
 
             os.makedirs(tmpdir)
         else:
             d = None
             if WINDOWS:
                 # without this, we get the default temp dir location, but
                 # in all lowercase, which causes troubles with paths (issue3490)
                 d = osenvironb.get(b'TMP', None)
             tmpdir = tempfile.mkdtemp(b'', b'hgtests.', d)
 
         self._hgtmp = osenvironb[b'HGTMP'] = os.path.realpath(tmpdir)
 
         self._custom_bin_dir = os.path.join(self._hgtmp, b'custom-bin')
         os.makedirs(self._custom_bin_dir)
 
         if self.options.with_hg:
             self._installdir = None
             whg = self.options.with_hg
             self._bindir = os.path.dirname(os.path.realpath(whg))
             assert isinstance(self._bindir, bytes)
             self._hgcommand = os.path.basename(whg)
 
             normbin = os.path.normpath(os.path.abspath(whg))
             normbin = normbin.replace(_sys2bytes(os.sep), b'/')
 
             # Other Python scripts in the test harness need to
             # `import mercurial`. If `hg` is a Python script, we assume
             # the Mercurial modules are relative to its path and tell the tests
             # to load Python modules from its directory.
             with open(whg, 'rb') as fh:
                 initial = fh.read(1024)
 
             if re.match(b'#!.*python', initial):
                 self._pythondir = self._bindir
             # If it looks like our in-repo Rust binary, use the source root.
             # This is a bit hacky. But rhg is still not supported outside the
             # source directory. So until it is, do the simple thing.
             elif re.search(b'/rust/target/[^/]+/hg', normbin):
                 self._pythondir = os.path.dirname(self._testdir)
             # Fall back to the legacy behavior.
             else:
                 self._pythondir = self._bindir
             self._pythondir_inferred = True
 
         else:
             self._installdir = os.path.join(self._hgtmp, b"install")
             self._bindir = os.path.join(self._installdir, b"bin")
             self._hgcommand = b'hg'
             self._pythondir = os.path.join(self._installdir, b"lib", b"python")
 
         # Force the use of hg.exe instead of relying on MSYS to recognize hg is
         # a python script and feed it to python.exe.  Legacy stdio is force
         # enabled by hg.exe, and this is a more realistic way to launch hg
         # anyway.
         if WINDOWS and not self._hgcommand.endswith(b'.exe'):
             self._hgcommand += b'.exe'
 
+        real_hg = os.path.join(self._bindir, self._hgcommand)
+        osenvironb[b'HGTEST_REAL_HG'] = real_hg
         # set CHGHG, then replace "hg" command by "chg"
         chgbindir = self._bindir
         if self.options.chg or self.options.with_chg:
-            osenvironb[b'CHGHG'] = os.path.join(self._bindir, self._hgcommand)
+            osenvironb[b'CHGHG'] = real_hg
         else:
             osenvironb.pop(b'CHGHG', None)  # drop flag for hghave
         if self.options.chg:
             self._hgcommand = b'chg'
         elif self.options.with_chg:
             chgbindir = os.path.dirname(os.path.realpath(self.options.with_chg))
             self._hgcommand = os.path.basename(self.options.with_chg)
 
         # configure fallback and replace "hg" command by "rhg"
         rhgbindir = self._bindir
         if self.options.rhg or self.options.with_rhg:
             # Affects hghave.py
             osenvironb[b'RHG_INSTALLED_AS_HG'] = b'1'
             # Affects configuration. Alternatives would be setting configuration through
             # `$HGRCPATH` but some tests override that, or changing `_hgcommand` to include
             # `--config` but that disrupts tests that print command lines and check expected
             # output.
             osenvironb[b'RHG_ON_UNSUPPORTED'] = b'fallback'
-            osenvironb[b'RHG_FALLBACK_EXECUTABLE'] = os.path.join(
-                self._bindir, self._hgcommand
-            )
+            osenvironb[b'RHG_FALLBACK_EXECUTABLE'] = real_hg
         if self.options.rhg:
             self._hgcommand = b'rhg'
         elif self.options.with_rhg:
             rhgbindir = os.path.dirname(os.path.realpath(self.options.with_rhg))
             self._hgcommand = os.path.basename(self.options.with_rhg)
 
         osenvironb[b"BINDIR"] = self._bindir
         osenvironb[b"PYTHON"] = PYTHON
 
         fileb = _sys2bytes(__file__)
         runtestdir = os.path.abspath(os.path.dirname(fileb))
         osenvironb[b'RUNTESTDIR'] = runtestdir
         if PYTHON3:
             sepb = _sys2bytes(os.pathsep)
         else:
             sepb = os.pathsep
         path = [self._bindir, runtestdir] + osenvironb[b"PATH"].split(sepb)
         if os.path.islink(__file__):
             # test helper will likely be at the end of the symlink
             realfile = os.path.realpath(fileb)
             realdir = os.path.abspath(os.path.dirname(realfile))
             path.insert(2, realdir)
         if chgbindir != self._bindir:
             path.insert(1, chgbindir)
         if rhgbindir != self._bindir:
             path.insert(1, rhgbindir)
         if self._testdir != runtestdir:
             path = [self._testdir] + path
         path = [self._custom_bin_dir] + path
         osenvironb[b"PATH"] = sepb.join(path)
 
         # Include TESTDIR in PYTHONPATH so that out-of-tree extensions
         # can run .../tests/run-tests.py test-foo where test-foo
         # adds an extension to HGRC. Also include run-test.py directory to
         # import modules like heredoctest.
         pypath = [self._pythondir, self._testdir, runtestdir]
         # We have to augment PYTHONPATH, rather than simply replacing
         # it, in case external libraries are only available via current
         # PYTHONPATH.  (In particular, the Subversion bindings on OS X
         # are in /opt/subversion.)
         oldpypath = osenvironb.get(IMPL_PATH)
         if oldpypath:
             pypath.append(oldpypath)
         osenvironb[IMPL_PATH] = sepb.join(pypath)
 
         if self.options.pure:
             os.environ["HGTEST_RUN_TESTS_PURE"] = "--pure"
             os.environ["HGMODULEPOLICY"] = "py"
         if self.options.rust:
             os.environ["HGMODULEPOLICY"] = "rust+c"
         if self.options.no_rust:
             current_policy = os.environ.get("HGMODULEPOLICY", "")
             if current_policy.startswith("rust+"):
                 os.environ["HGMODULEPOLICY"] = current_policy[len("rust+") :]
             os.environ.pop("HGWITHRUSTEXT", None)
 
         if self.options.allow_slow_tests:
             os.environ["HGTEST_SLOW"] = "slow"
         elif 'HGTEST_SLOW' in os.environ:
             del os.environ['HGTEST_SLOW']
 
         self._coveragefile = os.path.join(self._testdir, b'.coverage')
 
         if self.options.exceptions:
             exceptionsdir = os.path.join(self._outputdir, b'exceptions')
             try:
                 os.makedirs(exceptionsdir)
             except OSError as e:
                 if e.errno != errno.EEXIST:
                     raise
 
             # Remove all existing exception reports.
             for f in os.listdir(exceptionsdir):
                 os.unlink(os.path.join(exceptionsdir, f))
 
             osenvironb[b'HGEXCEPTIONSDIR'] = exceptionsdir
             logexceptions = os.path.join(self._testdir, b'logexceptions.py')
             self.options.extra_config_opt.append(
                 'extensions.logexceptions=%s' % logexceptions.decode('utf-8')
             )
 
         vlog("# Using TESTDIR", _bytes2sys(self._testdir))
         vlog("# Using RUNTESTDIR", _bytes2sys(osenvironb[b'RUNTESTDIR']))
         vlog("# Using HGTMP", _bytes2sys(self._hgtmp))
         vlog("# Using PATH", os.environ["PATH"])
         vlog(
             "# Using",
             _bytes2sys(IMPL_PATH),
             _bytes2sys(osenvironb[IMPL_PATH]),
         )
         vlog("# Writing to directory", _bytes2sys(self._outputdir))
 
         try:
             return self._runtests(testdescs) or 0
         finally:
             time.sleep(0.1)
             self._cleanup()
 
     def findtests(self, args):
         """Finds possible test files from arguments.
 
         If you wish to inject custom tests into the test harness, this would
         be a good function to monkeypatch or override in a derived class.
         """
         if not args:
             if self.options.changed:
                 proc = Popen4(
                     b'hg st --rev "%s" -man0 .'
                     % _sys2bytes(self.options.changed),
                     None,
                     0,
                 )
                 stdout, stderr = proc.communicate()
                 args = stdout.strip(b'\0').split(b'\0')
             else:
                 args = os.listdir(b'.')
 
         expanded_args = []
         for arg in args:
             if os.path.isdir(arg):
                 if not arg.endswith(b'/'):
                     arg += b'/'
                 expanded_args.extend([arg + a for a in os.listdir(arg)])
             else:
                 expanded_args.append(arg)
         args = expanded_args
 
         testcasepattern = re.compile(br'([\w-]+\.t|py)(?:#([a-zA-Z0-9_\-.#]+))')
         tests = []
         for t in args:
             case = []
 
             if not (
                 os.path.basename(t).startswith(b'test-')
                 and (t.endswith(b'.py') or t.endswith(b'.t'))
             ):
 
                 m = testcasepattern.match(os.path.basename(t))
                 if m is not None:
                     t_basename, casestr = m.groups()
                     t = os.path.join(os.path.dirname(t), t_basename)
                     if casestr:
                         case = casestr.split(b'#')
                 else:
                     continue
 
             if t.endswith(b'.t'):
                 # .t file may contain multiple test cases
                 casedimensions = parsettestcases(t)
                 if casedimensions:
                     cases = []
 
                     def addcases(case, casedimensions):
                         if not casedimensions:
                             cases.append(case)
                         else:
                             for c in casedimensions[0]:
                                 addcases(case + [c], casedimensions[1:])
 
                     addcases([], casedimensions)
                     if case and case in cases:
                         cases = [case]
                     elif case:
                         # Ignore invalid cases
                         cases = []
                     else:
                         pass
                     tests += [{'path': t, 'case': c} for c in sorted(cases)]
                 else:
                     tests.append({'path': t})
             else:
                 tests.append({'path': t})
 
         if self.options.retest:
             retest_args = []
             for test in tests:
                 errpath = self._geterrpath(test)
                 if os.path.exists(errpath):
                     retest_args.append(test)
             tests = retest_args
         return tests
 
     def _runtests(self, testdescs):
         def _reloadtest(test, i):
             # convert a test back to its description dict
             desc = {'path': test.path}
             case = getattr(test, '_case', [])
             if case:
                 desc['case'] = case
             return self._gettest(desc, i)
 
         try:
             if self.options.restart:
                 orig = list(testdescs)
                 while testdescs:
                     desc = testdescs[0]
                     errpath = self._geterrpath(desc)
                     if os.path.exists(errpath):
                         break
                     testdescs.pop(0)
                 if not testdescs:
                     print("running all tests")
                     testdescs = orig
 
             tests = [self._gettest(d, i) for i, d in enumerate(testdescs)]
             num_tests = len(tests) * self.options.runs_per_test
 
             jobs = min(num_tests, self.options.jobs)
 
             failed = False
             kws = self.options.keywords
             if kws is not None and PYTHON3:
                 kws = kws.encode('utf-8')
 
             suite = TestSuite(
                 self._testdir,
                 jobs=jobs,
                 whitelist=self.options.whitelisted,
                 blacklist=self.options.blacklist,
                 keywords=kws,
                 loop=self.options.loop,
                 runs_per_test=self.options.runs_per_test,
                 showchannels=self.options.showchannels,
                 tests=tests,
                 loadtest=_reloadtest,
             )
             verbosity = 1
             if self.options.list_tests:
                 verbosity = 0
             elif self.options.verbose:
                 verbosity = 2
             runner = TextTestRunner(self, verbosity=verbosity)
 
             if self.options.list_tests:
                 result = runner.listtests(suite)
             else:
                 self._usecorrectpython()
                 if self._installdir:
                     self._installhg()
                     self._checkhglib("Testing")
                 if self.options.chg:
                     assert self._installdir
                     self._installchg()
                 if self.options.rhg:
                     assert self._installdir
                     self._installrhg()
 
                 log(
                     'running %d tests using %d parallel processes'
                     % (num_tests, jobs)
                 )
 
                 result = runner.run(suite)
 
             if result.failures or result.errors:
                 failed = True
 
             result.onEnd()
 
             if self.options.anycoverage:
                 self._outputcoverage()
         except KeyboardInterrupt:
             failed = True
             print("\ninterrupted!")
 
         if failed:
             return 1
 
     def _geterrpath(self, test):
         # test['path'] is a relative path
         if 'case' in test:
             # for multiple dimensions test cases
             casestr = b'#'.join(test['case'])
             errpath = b'%s#%s.err' % (test['path'], casestr)
         else:
             errpath = b'%s.err' % test['path']
         if self.options.outputdir:
             self._outputdir = canonpath(_sys2bytes(self.options.outputdir))
             errpath = os.path.join(self._outputdir, errpath)
         return errpath
 
     def _getport(self, count):
         port = self._ports.get(count)  # do we have a cached entry?
         if port is None:
             portneeded = 3
             # above 100 tries we just give up and let test reports failure
             for tries in xrange(100):
                 allfree = True
                 port = self.options.port + self._portoffset
                 for idx in xrange(portneeded):
                     if not checkportisavailable(port + idx):
                         allfree = False
                         break
                 self._portoffset += portneeded
                 if allfree:
                     break
             self._ports[count] = port
         return port
 
     def _gettest(self, testdesc, count):
         """Obtain a Test by looking at its filename.
 
         Returns a Test instance. The Test may not be runnable if it doesn't
         map to a known type.
         """
         path = testdesc['path']
         lctest = path.lower()
         testcls = Test
 
         for ext, cls in self.TESTTYPES:
             if lctest.endswith(ext):
                 testcls = cls
                 break
 
         refpath = os.path.join(getcwdb(), path)
         tmpdir = os.path.join(self._hgtmp, b'child%d' % count)
 
         # extra keyword parameters. 'case' is used by .t tests
         kwds = {k: testdesc[k] for k in ['case'] if k in testdesc}
 
         t = testcls(
             refpath,
             self._outputdir,
             tmpdir,
             keeptmpdir=self.options.keep_tmpdir,
             debug=self.options.debug,
             first=self.options.first,
             timeout=self.options.timeout,
             startport=self._getport(count),
             extraconfigopts=self.options.extra_config_opt,
             shell=self.options.shell,
             hgcommand=self._hgcommand,
             usechg=bool(self.options.with_chg or self.options.chg),
             chgdebug=self.options.chg_debug,
             useipv6=useipv6,
             **kwds
         )
         t.should_reload = True
         return t
 
     def _cleanup(self):
         """Clean up state from this test invocation."""
         if self.options.keep_tmpdir:
             return
 
         vlog("# Cleaning up HGTMP", _bytes2sys(self._hgtmp))
         shutil.rmtree(self._hgtmp, True)
         for f in self._createdfiles:
             try:
                 os.remove(f)
             except OSError:
                 pass
 
     def _usecorrectpython(self):
         """Configure the environment to use the appropriate Python in tests."""
         # Tests must use the same interpreter as us or bad things will happen.
         if sys.platform == 'win32':
             pyexe_names = [b'python', b'python.exe']
         elif sys.version_info[0] < 3:
             pyexe_names = [b'python', b'python2']
         else:
             pyexe_names = [b'python', b'python3']
 
         # os.symlink() is a thing with py3 on Windows, but it requires
         # Administrator rights.
         if getattr(os, 'symlink', None) and not WINDOWS:
             msg = "# Making python executable in test path a symlink to '%s'"
             msg %= sysexecutable
             vlog(msg)
             for pyexename in pyexe_names:
                 mypython = os.path.join(self._custom_bin_dir, pyexename)
                 try:
                     if os.readlink(mypython) == sysexecutable:
                         continue
                     os.unlink(mypython)
                 except OSError as err:
                     if err.errno != errno.ENOENT:
                         raise
                 if self._findprogram(pyexename) != sysexecutable:
                     try:
                         os.symlink(sysexecutable, mypython)
                         self._createdfiles.append(mypython)
                     except OSError as err:
                         # child processes may race, which is harmless
                         if err.errno != errno.EEXIST:
                             raise
         else:
             # Windows doesn't have `python3.exe`, and MSYS cannot understand the
             # reparse point with that name provided by Microsoft.  Create a
             # simple script on PATH with that name that delegates to the py3
             # launcher so the shebang lines work.
             if os.getenv('MSYSTEM'):
                 py3exe_name = os.path.join(self._custom_bin_dir, b'python3')
                 with open(py3exe_name, 'wb') as f:
                     f.write(b'#!/bin/sh\n')
                     f.write(b'py -3.%d "$@"\n' % sys.version_info[1])
 
                 pyexe_name = os.path.join(self._custom_bin_dir, b'python')
                 with open(pyexe_name, 'wb') as f:
                     f.write(b'#!/bin/sh\n')
                     f.write(b'py -%d.%d "$@"\n' % sys.version_info[0:2])
 
             exedir, exename = os.path.split(sysexecutable)
             for pyexename in pyexe_names:
                 msg = "# Modifying search path to find %s as %s in '%s'"
                 msg %= (exename, pyexename, exedir)
                 vlog(msg)
             path = os.environ['PATH'].split(os.pathsep)
             while exedir in path:
                 path.remove(exedir)
 
             # Binaries installed by pip into the user area like pylint.exe may
             # not be in PATH by default.
             extra_paths = [exedir]
             vi = sys.version_info
             appdata = os.environ.get('APPDATA')
             if appdata is not None:
                 scripts_dir = os.path.join(
                     appdata,
                     'Python',
                     'Python%d%d' % (vi[0], vi[1]),
                     'Scripts',
                 )
 
                 if vi.major == 2:
                     scripts_dir = os.path.join(
                         appdata,
                         'Python',
                         'Scripts',
                     )
 
                 extra_paths.append(scripts_dir)
 
             os.environ['PATH'] = os.pathsep.join(extra_paths + path)
             for pyexename in pyexe_names:
                 if not self._findprogram(pyexename):
                     print("WARNING: Cannot find %s in search path" % pyexename)
 
     def _installhg(self):
         """Install hg into the test environment.
 
         This will also configure hg with the appropriate testing settings.
         """
         vlog("# Performing temporary installation of HG")
         installerrs = os.path.join(self._hgtmp, b"install.err")
         compiler = ''
         if self.options.compiler:
             compiler = '--compiler ' + self.options.compiler
         setup_opts = b""
         if self.options.pure:
             setup_opts = b"--pure"
         elif self.options.rust:
             setup_opts = b"--rust"
         elif self.options.no_rust:
             setup_opts = b"--no-rust"
 
         # Run installer in hg root
         script = os.path.realpath(sys.argv[0])
         exe = sysexecutable
         if PYTHON3:
             compiler = _sys2bytes(compiler)
             script = _sys2bytes(script)
             exe = _sys2bytes(exe)
         hgroot = os.path.dirname(os.path.dirname(script))
         self._hgroot = hgroot
         os.chdir(hgroot)
         nohome = b'--home=""'
         if WINDOWS:
             # The --home="" trick works only on OS where os.sep == '/'
             # because of a distutils convert_path() fast-path. Avoid it at
             # least on Windows for now, deal with .pydistutils.cfg bugs
             # when they happen.
             nohome = b''
         cmd = (
             b'"%(exe)s" setup.py %(setup_opts)s clean --all'
             b' build %(compiler)s --build-base="%(base)s"'
             b' install --force --prefix="%(prefix)s"'
             b' --install-lib="%(libdir)s"'
             b' --install-scripts="%(bindir)s" %(nohome)s >%(logfile)s 2>&1'
             % {
                 b'exe': exe,
                 b'setup_opts': setup_opts,
                 b'compiler': compiler,
                 b'base': os.path.join(self._hgtmp, b"build"),
                 b'prefix': self._installdir,
                 b'libdir': self._pythondir,
                 b'bindir': self._bindir,
                 b'nohome': nohome,
                 b'logfile': installerrs,
             }
         )
 
         # setuptools requires install directories to exist.
         def makedirs(p):
             try:
                 os.makedirs(p)
             except OSError as e:
                 if e.errno != errno.EEXIST:
                     raise
 
         makedirs(self._pythondir)
         makedirs(self._bindir)
 
         vlog("# Running", cmd.decode("utf-8"))
         if subprocess.call(_bytes2sys(cmd), shell=True) == 0:
             if not self.options.verbose:
                 try:
                     os.remove(installerrs)
                 except OSError as e:
                     if e.errno != errno.ENOENT:
                         raise
         else:
             with open(installerrs, 'rb') as f:
                 for line in f:
                     if PYTHON3:
                         sys.stdout.buffer.write(line)
                     else:
                         sys.stdout.write(line)
             sys.exit(1)
         os.chdir(self._testdir)
 
         hgbat = os.path.join(self._bindir, b'hg.bat')
         if os.path.isfile(hgbat):
             # hg.bat expects to be put in bin/scripts while run-tests.py
             # installation layout put it in bin/ directly. Fix it
             with open(hgbat, 'rb') as f:
                 data = f.read()
             if br'"%~dp0..\python" "%~dp0hg" %*' in data:
                 data = data.replace(
                     br'"%~dp0..\python" "%~dp0hg" %*',
                     b'"%~dp0python" "%~dp0hg" %*',
                 )
                 with open(hgbat, 'wb') as f:
                     f.write(data)
             else:
                 print('WARNING: cannot fix hg.bat reference to python.exe')
 
         if self.options.anycoverage:
             custom = os.path.join(
                 osenvironb[b'RUNTESTDIR'], b'sitecustomize.py'
             )
             target = os.path.join(self._pythondir, b'sitecustomize.py')
             vlog('# Installing coverage trigger to %s' % target)
             shutil.copyfile(custom, target)
             rc = os.path.join(self._testdir, b'.coveragerc')
             vlog('# Installing coverage rc to %s' % rc)
             osenvironb[b'COVERAGE_PROCESS_START'] = rc
             covdir = os.path.join(self._installdir, b'..', b'coverage')
             try:
                 os.mkdir(covdir)
             except OSError as e:
                 if e.errno != errno.EEXIST:
                     raise
 
             osenvironb[b'COVERAGE_DIR'] = covdir
 
     def _checkhglib(self, verb):
         """Ensure that the 'mercurial' package imported by python is
         the one we expect it to be.  If not, print a warning to stderr."""
         if self._pythondir_inferred:
             # The pythondir has been inferred from --with-hg flag.
             # We cannot expect anything sensible here.
             return
         expecthg = os.path.join(self._pythondir, b'mercurial')
         actualhg = self._gethgpath()
         if os.path.abspath(actualhg) != os.path.abspath(expecthg):
             sys.stderr.write(
                 'warning: %s with unexpected mercurial lib: %s\n'
                 '         (expected %s)\n' % (verb, actualhg, expecthg)
             )
 
     def _gethgpath(self):
         """Return the path to the mercurial package that is actually found by
         the current Python interpreter."""
         if self._hgpath is not None:
             return self._hgpath
 
         cmd = b'"%s" -c "import mercurial; print (mercurial.__path__[0])"'
         cmd = cmd % PYTHON
         if PYTHON3:
             cmd = _bytes2sys(cmd)
 
         p = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True)
         out, err = p.communicate()
 
         self._hgpath = out.strip()
 
         return self._hgpath
 
     def _installchg(self):
         """Install chg into the test environment"""
         vlog('# Performing temporary installation of CHG')
         assert os.path.dirname(self._bindir) == self._installdir
         assert self._hgroot, 'must be called after _installhg()'
         cmd = b'"%(make)s" clean install PREFIX="%(prefix)s"' % {
             b'make': b'make',  # TODO: switch by option or environment?
             b'prefix': self._installdir,
         }
         cwd = os.path.join(self._hgroot, b'contrib', b'chg')
         vlog("# Running", cmd)
         proc = subprocess.Popen(
             cmd,
             shell=True,
             cwd=cwd,
             stdin=subprocess.PIPE,
             stdout=subprocess.PIPE,
             stderr=subprocess.STDOUT,
         )
         out, _err = proc.communicate()
         if proc.returncode != 0:
             if PYTHON3:
                 sys.stdout.buffer.write(out)
             else:
                 sys.stdout.write(out)
             sys.exit(1)
 
     def _installrhg(self):
         """Install rhg into the test environment"""
         vlog('# Performing temporary installation of rhg')
         assert os.path.dirname(self._bindir) == self._installdir
         assert self._hgroot, 'must be called after _installhg()'
         cmd = b'"%(make)s" install-rhg PREFIX="%(prefix)s"' % {
             b'make': b'make',  # TODO: switch by option or environment?
             b'prefix': self._installdir,
         }
         cwd = self._hgroot
         vlog("# Running", cmd)
         proc = subprocess.Popen(
             cmd,
             shell=True,
             cwd=cwd,
             stdin=subprocess.PIPE,
             stdout=subprocess.PIPE,
             stderr=subprocess.STDOUT,
         )
         out, _err = proc.communicate()
         if proc.returncode != 0:
             if PYTHON3:
                 sys.stdout.buffer.write(out)
             else:
                 sys.stdout.write(out)
             sys.exit(1)
 
     def _outputcoverage(self):
         """Produce code coverage output."""
         import coverage
 
         coverage = coverage.coverage
 
         vlog('# Producing coverage report')
         # chdir is the easiest way to get short, relative paths in the
         # output.
         os.chdir(self._hgroot)
         covdir = os.path.join(_bytes2sys(self._installdir), '..', 'coverage')
         cov = coverage(data_file=os.path.join(covdir, 'cov'))
 
         # Map install directory paths back to source directory.
         cov.config.paths['srcdir'] = ['.', _bytes2sys(self._pythondir)]
 
         cov.combine()
 
         omit = [
             _bytes2sys(os.path.join(x, b'*'))
             for x in [self._bindir, self._testdir]
         ]
         cov.report(ignore_errors=True, omit=omit)
 
         if self.options.htmlcov:
             htmldir = os.path.join(_bytes2sys(self._outputdir), 'htmlcov')
             cov.html_report(directory=htmldir, omit=omit)
         if self.options.annotate:
             adir = os.path.join(_bytes2sys(self._outputdir), 'annotated')
             if not os.path.isdir(adir):
                 os.mkdir(adir)
             cov.annotate(directory=adir, omit=omit)
 
     def _findprogram(self, program):
         """Search PATH for a executable program"""
         dpb = _sys2bytes(os.defpath)
         sepb = _sys2bytes(os.pathsep)
         for p in osenvironb.get(b'PATH', dpb).split(sepb):
             name = os.path.join(p, program)
             if WINDOWS or os.access(name, os.X_OK):
                 return _bytes2sys(name)
         return None
 
     def _checktools(self):
         """Ensure tools required to run tests are present."""
         for p in self.REQUIREDTOOLS:
             if WINDOWS and not p.endswith(b'.exe'):
                 p += b'.exe'
             found = self._findprogram(p)
             p = p.decode("utf-8")
             if found:
                 vlog("# Found prerequisite", p, "at", found)
             else:
                 print("WARNING: Did not find prerequisite tool: %s " % p)
 
 
 def aggregateexceptions(path):
     exceptioncounts = collections.Counter()
     testsbyfailure = collections.defaultdict(set)
     failuresbytest = collections.defaultdict(set)
 
     for f in os.listdir(path):
         with open(os.path.join(path, f), 'rb') as fh:
             data = fh.read().split(b'\0')
             if len(data) != 5:
                 continue
 
             exc, mainframe, hgframe, hgline, testname = data
             exc = exc.decode('utf-8')
             mainframe = mainframe.decode('utf-8')
             hgframe = hgframe.decode('utf-8')
             hgline = hgline.decode('utf-8')
             testname = testname.decode('utf-8')
 
             key = (hgframe, hgline, exc)
             exceptioncounts[key] += 1
             testsbyfailure[key].add(testname)
             failuresbytest[testname].add(key)
 
     # Find test having fewest failures for each failure.
     leastfailing = {}
     for key, tests in testsbyfailure.items():
         fewesttest = None
         fewestcount = 99999999
         for test in sorted(tests):
             if len(failuresbytest[test]) < fewestcount:
                 fewesttest = test
                 fewestcount = len(failuresbytest[test])
 
         leastfailing[key] = (fewestcount, fewesttest)
 
     # Create a combined counter so we can sort by total occurrences and
     # impacted tests.
     combined = {}
     for key in exceptioncounts:
         combined[key] = (
             exceptioncounts[key],
             len(testsbyfailure[key]),
             leastfailing[key][0],
             leastfailing[key][1],
         )
 
     return {
         'exceptioncounts': exceptioncounts,
         'total': sum(exceptioncounts.values()),
         'combined': combined,
         'leastfailing': leastfailing,
         'byfailure': testsbyfailure,
         'bytest': failuresbytest,
     }
 
 
 if __name__ == '__main__':
     runner = TestRunner()
 
     try:
         import msvcrt
 
         msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY)
         msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
         msvcrt.setmode(sys.stderr.fileno(), os.O_BINARY)
     except ImportError:
         pass
 
     sys.exit(runner.run(sys.argv[1:]))

tests/test-hghave.t

@@ -1,46 +1,46
   $ . "$TESTDIR/helpers-testrepo.sh"
 
 Testing that hghave does not crash when checking features
 
   $ hghave --test-features 2>/dev/null
 
 Testing hghave extensibility for third party tools
 
   $ cat > hghaveaddon.py <<EOF
   > import hghave
   > @hghave.check("custom", "custom hghave feature")
   > def has_custom():
   >     return True
   > EOF
 
 (invocation via run-tests.py)
 
   $ cat > test-hghaveaddon.t <<EOF
   > #require custom
   >   $ echo foo
   >   foo
   > EOF
   $ ( \
   > testrepohgenv; \
-  > "$PYTHON" $TESTDIR/run-tests.py --with-hg=`which hg` -j 1 \
+  > "$PYTHON" $TESTDIR/run-tests.py --with-hg=$HGTEST_REAL_HG -j 1 \
   >    $HGTEST_RUN_TESTS_PURE test-hghaveaddon.t \
   > )
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
 
 (invocation via command line)
 
   $ unset TESTDIR
   $ hghave custom
 
 (terminate with exit code 2 at failure of importing hghaveaddon.py)
 
   $ rm hghaveaddon.*
   $ cat > hghaveaddon.py <<NO_CHECK_EOF
   > importing this file should cause syntax error
   > NO_CHECK_EOF
 
   $ hghave custom
   failed to import hghaveaddon.py from '.': invalid syntax (hghaveaddon.py, line 1)
   [2]

tests/test-run-tests.t

@@ -1,2087 +1,2087
 This file tests the behavior of run-tests.py itself.
 
 Avoid interference from actual test env:
 
   $ . "$TESTDIR/helper-runtests.sh"
 
 Smoke test with install
 ============
   $ "$PYTHON" $TESTDIR/run-tests.py $HGTEST_RUN_TESTS_PURE -l
   running 0 tests using 0 parallel processes 
   
   # Ran 0 tests, 0 skipped, 0 failed.
 
 Define a helper to avoid the install step
 =============
   $ rt()
   > {
-  >     "$PYTHON" $TESTDIR/run-tests.py --with-hg=`which hg` -j1 "$@"
+  >     "$PYTHON" $TESTDIR/run-tests.py --with-hg=$HGTEST_REAL_HG -j1 "$@"
   > }
 
 error paths
 
 #if symlink
   $ ln -s `which true` hg
   $ "$PYTHON" $TESTDIR/run-tests.py --with-hg=./hg
   warning: --with-hg should specify an hg script, not: true
   running 0 tests using 0 parallel processes 
   
   # Ran 0 tests, 0 skipped, 0 failed.
   $ rm hg
 #endif
 
 #if execbit
   $ touch hg
   $ "$PYTHON" $TESTDIR/run-tests.py --with-hg=./hg
   usage: run-tests.py [options] [tests]
   run-tests.py: error: --with-hg must specify an executable hg script
   [2]
   $ rm hg
 #endif
 
 Features for testing optional lines
 ===================================
 
   $ cat > hghaveaddon.py <<EOF
   > import hghave
   > @hghave.check("custom", "custom hghave feature")
   > def has_custom():
   >     return True
   > @hghave.check("missing", "missing hghave feature")
   > def has_missing():
   >     return False
   > EOF
 
 an empty test
 =======================
 
   $ touch test-empty.t
   $ rt
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
   $ rm test-empty.t
 
 a succesful test
 =======================
 
   $ cat > test-success.t << EOF
   >   $ echo babar
   >   babar
   >   $ echo xyzzy
   >   dont_print (?)
   >   nothing[42]line (re) (?)
   >   never*happens (glob) (?)
   >   more_nothing (?)
   >   xyzzy
   >   nor this (?)
   >   $ printf 'abc\ndef\nxyz\n'
   >   123 (?)
   >   abc
   >   def (?)
   >   456 (?)
   >   xyz
   >   $ printf 'zyx\nwvu\ntsr\n'
   >   abc (?)
   >   zyx (custom !)
   >   wvu
   >   no_print (no-custom !)
   >   tsr (no-missing !)
   >   missing (missing !)
   > EOF
 
   $ rt
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
 
 failing test
 ==================
 
 test churn with globs
   $ cat > test-failure.t <<EOF
   >   $ echo "bar-baz"; echo "bar-bad"; echo foo
   >   bar*bad (glob)
   >   bar*baz (glob)
   >   | fo (re)
   > EOF
   $ rt test-failure.t
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/test-failure.t.err
   @@ -1,4 +1,4 @@
      $ echo "bar-baz"; echo "bar-bad"; echo foo
   +  bar*baz (glob)
      bar*bad (glob)
   -  bar*baz (glob)
   -  | fo (re)
   +  foo
   
   ERROR: test-failure.t output changed
   !
   Failed test-failure.t: output changed
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 test how multiple globs gets matched with lines in output
   $ cat > test-failure-globs.t <<EOF
   >   $ echo "context"; echo "context"; \
   >     echo "key: 1"; echo "value: not a"; \
   >     echo "key: 2"; echo "value: not b"; \
   >     echo "key: 3"; echo "value: c"; \
   >     echo "key: 4"; echo "value: d"
   >   context
   >   context
   >   key: 1
   >   value: a
   >   key: 2
   >   value: b
   >   key: 3
   >   value: * (glob)
   >   key: 4
   >   value: * (glob)
   > EOF
   $ rt test-failure-globs.t
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/test-failure-globs.t
   +++ $TESTTMP/test-failure-globs.t.err
   @@ -2,9 +2,9 @@
      context
      context
      key: 1
   -  value: a
   +  value: not a
      key: 2
   -  value: b
   +  value: not b
      key: 3
      value: * (glob)
      key: 4
   
   ERROR: test-failure-globs.t output changed
   !
   Failed test-failure-globs.t: output changed
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
   $ rm test-failure-globs.t
 
 test diff colorisation
 
 #if no-windows pygments
   $ rt test-failure.t --color always
   running 1 tests using 1 parallel processes 
   
   \x1b[38;5;124m--- $TESTTMP/test-failure.t\x1b[39m (esc)
   \x1b[38;5;34m+++ $TESTTMP/test-failure.t.err\x1b[39m (esc)
   \x1b[38;5;90;01m@@ -1,4 +1,4 @@\x1b[39;00m (esc)
      $ echo "bar-baz"; echo "bar-bad"; echo foo
   \x1b[38;5;34m+  bar*baz (glob)\x1b[39m (esc)
      bar*bad (glob)
   \x1b[38;5;124m-  bar*baz (glob)\x1b[39m (esc)
   \x1b[38;5;124m-  | fo (re)\x1b[39m (esc)
   \x1b[38;5;34m+  foo\x1b[39m (esc)
   
   \x1b[38;5;88mERROR: \x1b[39m\x1b[38;5;9mtest-failure.t\x1b[39m\x1b[38;5;88m output changed\x1b[39m (esc)
   !
   \x1b[38;5;88mFailed \x1b[39m\x1b[38;5;9mtest-failure.t\x1b[39m\x1b[38;5;88m: output changed\x1b[39m (esc)
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
   $ rt test-failure.t 2> tmp.log
   running 1 tests using 1 parallel processes 
   [1]
   $ cat tmp.log
   
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/test-failure.t.err
   @@ -1,4 +1,4 @@
      $ echo "bar-baz"; echo "bar-bad"; echo foo
   +  bar*baz (glob)
      bar*bad (glob)
   -  bar*baz (glob)
   -  | fo (re)
   +  foo
   
   ERROR: test-failure.t output changed
   !
   Failed test-failure.t: output changed
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
 #endif
 
   $ cat > test-failure.t << EOF
   >   $ true
   >   should go away (true !)
   >   $ true
   >   should stay (false !)
   > 
   > Should remove first line, not second or third
   >   $ echo 'testing'
   >   baz*foo (glob) (true !)
   >   foobar*foo (glob) (false !)
   >   te*ting (glob) (true !)
   > 
   > Should keep first two lines, remove third and last
   >   $ echo 'testing'
   >   test.ng (re) (true !)
   >   foo.ar (re) (false !)
   >   b.r (re) (true !)
   >   missing (?)
   >   awol (true !)
   > 
   > The "missing" line should stay, even though awol is dropped
   >   $ echo 'testing'
   >   test.ng (re) (true !)
   >   foo.ar (?)
   >   awol
   >   missing (?)
   > EOF
   $ rt test-failure.t
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/test-failure.t.err
   @@ -1,11 +1,9 @@
      $ true
   -  should go away (true !)
      $ true
      should stay (false !)
    
    Should remove first line, not second or third
      $ echo 'testing'
   -  baz*foo (glob) (true !)
      foobar*foo (glob) (false !)
      te*ting (glob) (true !)
    
      foo.ar (re) (false !)
      missing (?)
   @@ -13,13 +11,10 @@
      $ echo 'testing'
      test.ng (re) (true !)
      foo.ar (re) (false !)
   -  b.r (re) (true !)
      missing (?)
   -  awol (true !)
    
    The "missing" line should stay, even though awol is dropped
      $ echo 'testing'
      test.ng (re) (true !)
      foo.ar (?)
   -  awol
      missing (?)
   
   ERROR: test-failure.t output changed
   !
   Failed test-failure.t: output changed
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 basic failing test
   $ cat > test-failure.t << EOF
   >   $ echo babar
   >   rataxes
   > This is a noop statement so that
   > this test is still more bytes than success.
   > pad pad pad pad............................................................
   > pad pad pad pad............................................................
   > pad pad pad pad............................................................
   > pad pad pad pad............................................................
   > pad pad pad pad............................................................
   > pad pad pad pad............................................................
   > EOF
 
   >>> fh = open('test-failure-unicode.t', 'wb')
   >>> fh.write(u'  $ echo babar\u03b1\n'.encode('utf-8')) and None
   >>> fh.write(u'  l\u03b5\u03b5t\n'.encode('utf-8')) and None
 
   $ rt
   running 3 tests using 1 parallel processes 
   
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/test-failure.t.err
   @@ -1,5 +1,5 @@
      $ echo babar
   -  rataxes
   +  babar
    This is a noop statement so that
    this test is still more bytes than success.
    pad pad pad pad............................................................
   
   ERROR: test-failure.t output changed
   !.
   --- $TESTTMP/test-failure-unicode.t
   +++ $TESTTMP/test-failure-unicode.t.err
   @@ -1,2 +1,2 @@
      $ echo babar\xce\xb1 (esc)
   -  l\xce\xb5\xce\xb5t (esc)
   +  babar\xce\xb1 (esc)
   
   ERROR: test-failure-unicode.t output changed
   !
   Failed test-failure-unicode.t: output changed
   Failed test-failure.t: output changed
   # Ran 3 tests, 0 skipped, 2 failed.
   python hash seed: * (glob)
   [1]
 
 test --outputdir
   $ mkdir output
   $ rt --outputdir output
   running 3 tests using 1 parallel processes 
   
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/output/test-failure.t.err
   @@ -1,5 +1,5 @@
      $ echo babar
   -  rataxes
   +  babar
    This is a noop statement so that
    this test is still more bytes than success.
    pad pad pad pad............................................................
   
   ERROR: test-failure.t output changed
   !.
   --- $TESTTMP/test-failure-unicode.t
   +++ $TESTTMP/output/test-failure-unicode.t.err
   @@ -1,2 +1,2 @@
      $ echo babar\xce\xb1 (esc)
   -  l\xce\xb5\xce\xb5t (esc)
   +  babar\xce\xb1 (esc)
   
   ERROR: test-failure-unicode.t output changed
   !
   Failed test-failure-unicode.t: output changed
   Failed test-failure.t: output changed
   # Ran 3 tests, 0 skipped, 2 failed.
   python hash seed: * (glob)
   [1]
   $ ls -a output
   .
   ..
   .testtimes
   test-failure-unicode.t.err
   test-failure.t.err
 
 test --xunit support
   $ rt --xunit=xunit.xml
   running 3 tests using 1 parallel processes 
   
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/test-failure.t.err
   @@ -1,5 +1,5 @@
      $ echo babar
   -  rataxes
   +  babar
    This is a noop statement so that
    this test is still more bytes than success.
    pad pad pad pad............................................................
   
   ERROR: test-failure.t output changed
   !.
   --- $TESTTMP/test-failure-unicode.t
   +++ $TESTTMP/test-failure-unicode.t.err
   @@ -1,2 +1,2 @@
      $ echo babar\xce\xb1 (esc)
   -  l\xce\xb5\xce\xb5t (esc)
   +  babar\xce\xb1 (esc)
   
   ERROR: test-failure-unicode.t output changed
   !
   Failed test-failure-unicode.t: output changed
   Failed test-failure.t: output changed
   # Ran 3 tests, 0 skipped, 2 failed.
   python hash seed: * (glob)
   [1]
   $ cat xunit.xml
   <?xml version="1.0" encoding="utf-8"?>
   <testsuite errors="0" failures="2" name="run-tests" skipped="0" tests="3">
     <testcase name="test-success.t" time="*"/> (glob)
     <testcase name="test-failure-unicode.t" time="*"> (glob)
       <failure message="output changed" type="output-mismatch"><![CDATA[--- $TESTTMP/test-failure-unicode.t (py38 !)
       <failure message="output changed" type="output-mismatch"> (no-py38 !)
   <![CDATA[--- $TESTTMP/test-failure-unicode.t (no-py38 !)
   +++ $TESTTMP/test-failure-unicode.t.err
   @@ -1,2 +1,2 @@
      $ echo babar\xce\xb1 (esc)
   -  l\xce\xb5\xce\xb5t (esc)
   +  babar\xce\xb1 (esc)
   ]]></failure> (py38 !)
   ]]>    </failure> (no-py38 !)
     </testcase>
     <testcase name="test-failure.t" time="*"> (glob)
       <failure message="output changed" type="output-mismatch"><![CDATA[--- $TESTTMP/test-failure.t (py38 !)
       <failure message="output changed" type="output-mismatch"> (no-py38 !)
   <![CDATA[--- $TESTTMP/test-failure.t (no-py38 !)
   +++ $TESTTMP/test-failure.t.err
   @@ -1,5 +1,5 @@
      $ echo babar
   -  rataxes
   +  babar
    This is a noop statement so that
    this test is still more bytes than success.
    pad pad pad pad............................................................
   ]]></failure> (py38 !)
   ]]>    </failure> (no-py38 !)
     </testcase>
   </testsuite>
 
   $ cat .testtimes
   test-empty.t * (glob)
   test-failure-globs.t * (glob)
   test-failure-unicode.t * (glob)
   test-failure.t * (glob)
   test-success.t * (glob)
 
   $ rt --list-tests
   test-failure-unicode.t
   test-failure.t
   test-success.t
 
   $ rt --list-tests --json
   test-failure-unicode.t
   test-failure.t
   test-success.t
   $ cat report.json
   testreport ={
       "test-failure-unicode.t": {
           "result": "success"
       },
       "test-failure.t": {
           "result": "success"
       },
       "test-success.t": {
           "result": "success"
       }
   } (no-eol)
 
   $ rt --list-tests --xunit=xunit.xml
   test-failure-unicode.t
   test-failure.t
   test-success.t
   $ cat xunit.xml
   <?xml version="1.0" encoding="utf-8"?>
   <testsuite errors="0" failures="0" name="run-tests" skipped="0" tests="0">
     <testcase name="test-failure-unicode.t"/>
     <testcase name="test-failure.t"/>
     <testcase name="test-success.t"/>
   </testsuite>
 
   $ rt --list-tests test-failure* --json --xunit=xunit.xml --outputdir output
   test-failure-unicode.t
   test-failure.t
   $ cat output/report.json
   testreport ={
       "test-failure-unicode.t": {
           "result": "success"
       },
       "test-failure.t": {
           "result": "success"
       }
   } (no-eol)
   $ cat xunit.xml
   <?xml version="1.0" encoding="utf-8"?>
   <testsuite errors="0" failures="0" name="run-tests" skipped="0" tests="0">
     <testcase name="test-failure-unicode.t"/>
     <testcase name="test-failure.t"/>
   </testsuite>
 
   $ rm test-failure-unicode.t
 
 test for --retest
 ====================
 
   $ rt --retest
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/test-failure.t.err
   @@ -1,5 +1,5 @@
      $ echo babar
   -  rataxes
   +  babar
    This is a noop statement so that
    this test is still more bytes than success.
    pad pad pad pad............................................................
   
   ERROR: test-failure.t output changed
   !
   Failed test-failure.t: output changed
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 --retest works with --outputdir
   $ rm -r output
   $ mkdir output
   $ mv test-failure.t.err output
   $ rt --retest --outputdir output
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/output/test-failure.t.err
   @@ -1,5 +1,5 @@
      $ echo babar
   -  rataxes
   +  babar
    This is a noop statement so that
    this test is still more bytes than success.
    pad pad pad pad............................................................
   
   ERROR: test-failure.t output changed
   !
   Failed test-failure.t: output changed
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 Selecting Tests To Run
 ======================
 
 successful
 
   $ rt test-success.t
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
 
 success w/ keyword
   $ rt -k xyzzy
   running 2 tests using 1 parallel processes 
   .
   # Ran 2 tests, 1 skipped, 0 failed.
 
 failed
 
   $ rt test-failure.t
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/test-failure.t.err
   @@ -1,5 +1,5 @@
      $ echo babar
   -  rataxes
   +  babar
    This is a noop statement so that
    this test is still more bytes than success.
    pad pad pad pad............................................................
   
   ERROR: test-failure.t output changed
   !
   Failed test-failure.t: output changed
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 failure w/ keyword
   $ rt -k rataxes
   running 2 tests using 1 parallel processes 
   
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/test-failure.t.err
   @@ -1,5 +1,5 @@
      $ echo babar
   -  rataxes
   +  babar
    This is a noop statement so that
    this test is still more bytes than success.
    pad pad pad pad............................................................
   
   ERROR: test-failure.t output changed
   !
   Failed test-failure.t: output changed
   # Ran 2 tests, 1 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 Verify that when a process fails to start we show a useful message
 ==================================================================
 
   $ cat > test-serve-fail.t <<EOF
   >   $ echo 'abort: child process failed to start blah'
   > EOF
   $ rt test-serve-fail.t
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/test-serve-fail.t
   +++ $TESTTMP/test-serve-fail.t.err
   @@ -1* +1,2 @@ (glob)
      $ echo 'abort: child process failed to start blah'
   +  abort: child process failed to start blah
   
   ERROR: test-serve-fail.t output changed
   !
   Failed test-serve-fail.t: server failed to start (HGPORT=*) (glob)
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
   $ rm test-serve-fail.t
 
 Verify that we can try other ports
 ===================================
 
 Extensions aren't inherited by the invoked run-tests.py. An extension
 introducing a repository requirement could cause this to fail. So we force
 HGRCPATH to get a clean environment.
 
   $ HGRCPATH= hg init inuse
   $ hg serve -R inuse -p $HGPORT -d --pid-file=blocks.pid
   $ cat blocks.pid >> $DAEMON_PIDS
   $ cat > test-serve-inuse.t <<EOF
   >   $ hg serve -R `pwd`/inuse -p \$HGPORT -d --pid-file=hg.pid
   >   $ cat hg.pid >> \$DAEMON_PIDS
   > EOF
   $ rt test-serve-inuse.t
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
   $ rm test-serve-inuse.t
   $ killdaemons.py $DAEMON_PIDS
 
 Running In Debug Mode
 ======================
 
   $ rt --debug 2>&1 | grep -v pwd
   running 2 tests using 1 parallel processes 
   + alias hg=hg.exe (windows !)
   + echo *SALT* 0 0 (glob)
   *SALT* 0 0 (glob)
   + echo babar
   babar
   + echo *SALT* 10 0 (glob)
   *SALT* 10 0 (glob)
   .+ alias hg=hg.exe (windows !)
   *+ echo *SALT* 0 0 (glob)
   *SALT* 0 0 (glob)
   + echo babar
   babar
   + echo *SALT* 2 0 (glob)
   *SALT* 2 0 (glob)
   + echo xyzzy
   xyzzy
   + echo *SALT* 9 0 (glob)
   *SALT* 9 0 (glob)
   + printf *abc\ndef\nxyz\n* (glob)
   abc
   def
   xyz
   + echo *SALT* 15 0 (glob)
   *SALT* 15 0 (glob)
   + printf *zyx\nwvu\ntsr\n* (glob)
   zyx
   wvu
   tsr
   + echo *SALT* 22 0 (glob)
   *SALT* 22 0 (glob)
   .
   # Ran 2 tests, 0 skipped, 0 failed.
 
 Parallel runs
 ==============
 
 (duplicate the failing test to get predictable output)
   $ cp test-failure.t test-failure-copy.t
 
   $ rt --jobs 2 test-failure*.t -n
   running 2 tests using 2 parallel processes 
   !!
   Failed test-failure*.t: output changed (glob)
   Failed test-failure*.t: output changed (glob)
   # Ran 2 tests, 0 skipped, 2 failed.
   python hash seed: * (glob)
   [1]
 
 failures in parallel with --first should only print one failure
   $ rt --jobs 2 --first test-failure*.t
   running 2 tests using 2 parallel processes 
   
   --- $TESTTMP/test-failure*.t (glob)
   +++ $TESTTMP/test-failure*.t.err (glob)
   @@ -1,5 +1,5 @@
      $ echo babar
   -  rataxes
   +  babar
    This is a noop statement so that
    this test is still more bytes than success.
    pad pad pad pad............................................................
   
   Failed test-failure*.t: output changed (glob)
   Failed test-failure*.t: output changed (glob)
   # Ran 2 tests, 0 skipped, 2 failed.
   python hash seed: * (glob)
   [1]
 
 
 (delete the duplicated test file)
   $ rm test-failure-copy.t
 
 multiple runs per test should be parallelized
 
   $ rt --jobs 2 --runs-per-test 2 test-success.t
   running 2 tests using 2 parallel processes 
   ..
   # Ran 2 tests, 0 skipped, 0 failed.
 
 Interactive run
 ===============
 
 (backup the failing test)
   $ cp test-failure.t backup
 
 Refuse the fix
 
   $ echo 'n' | rt -i
   running 2 tests using 1 parallel processes 
   
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/test-failure.t.err
   @@ -1,5 +1,5 @@
      $ echo babar
   -  rataxes
   +  babar
    This is a noop statement so that
    this test is still more bytes than success.
    pad pad pad pad............................................................
   Accept this change? [y/N] 
   ERROR: test-failure.t output changed
   !.
   Failed test-failure.t: output changed
   # Ran 2 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
   $ cat test-failure.t
     $ echo babar
     rataxes
   This is a noop statement so that
   this test is still more bytes than success.
   pad pad pad pad............................................................
   pad pad pad pad............................................................
   pad pad pad pad............................................................
   pad pad pad pad............................................................
   pad pad pad pad............................................................
   pad pad pad pad............................................................
 
 Interactive with custom view
 
   $ echo 'n' | rt -i --view echo
   running 2 tests using 1 parallel processes 
   $TESTTMP/test-failure.t $TESTTMP/test-failure.t.err
   Accept this change? [y/N]* (glob)
   ERROR: test-failure.t output changed
   !.
   Failed test-failure.t: output changed
   # Ran 2 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 View the fix
 
   $ echo 'y' | rt --view echo
   running 2 tests using 1 parallel processes 
   $TESTTMP/test-failure.t $TESTTMP/test-failure.t.err
   
   ERROR: test-failure.t output changed
   !.
   Failed test-failure.t: output changed
   # Ran 2 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 Accept the fix
 
   $ cat >> test-failure.t <<EOF
   >   $ echo 'saved backup bundle to \$TESTTMP/foo.hg'
   >   saved backup bundle to \$TESTTMP/foo.hg
   >   $ echo 'saved backup bundle to \$TESTTMP/foo.hg'
   >   saved backup bundle to $TESTTMP\\foo.hg
   >   $ echo 'saved backup bundle to \$TESTTMP/foo.hg'
   >   saved backup bundle to \$TESTTMP/*.hg (glob)
   > EOF
   $ echo 'y' | rt -i 2>&1
   running 2 tests using 1 parallel processes 
   
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/test-failure.t.err
   @@ -1,5 +1,5 @@
      $ echo babar
   -  rataxes
   +  babar
    This is a noop statement so that
    this test is still more bytes than success.
    pad pad pad pad............................................................
   @@ -11,6 +11,6 @@
      $ echo 'saved backup bundle to $TESTTMP/foo.hg'
      saved backup bundle to $TESTTMP/foo.hg
      $ echo 'saved backup bundle to $TESTTMP/foo.hg'
   -  saved backup bundle to $TESTTMP\foo.hg
   +  saved backup bundle to $TESTTMP/foo.hg
      $ echo 'saved backup bundle to $TESTTMP/foo.hg'
      saved backup bundle to $TESTTMP/*.hg (glob)
   Accept this change? [y/N] ..
   # Ran 2 tests, 0 skipped, 0 failed.
 
   $ sed -e 's,(glob)$,&<,g' test-failure.t
     $ echo babar
     babar
   This is a noop statement so that
   this test is still more bytes than success.
   pad pad pad pad............................................................
   pad pad pad pad............................................................
   pad pad pad pad............................................................
   pad pad pad pad............................................................
   pad pad pad pad............................................................
   pad pad pad pad............................................................
     $ echo 'saved backup bundle to $TESTTMP/foo.hg'
     saved backup bundle to $TESTTMP/foo.hg
     $ echo 'saved backup bundle to $TESTTMP/foo.hg'
     saved backup bundle to $TESTTMP/foo.hg
     $ echo 'saved backup bundle to $TESTTMP/foo.hg'
     saved backup bundle to $TESTTMP/*.hg (glob)<
 
   $ rm test-failure.t
 
 Race condition - test file was modified when test is running
 
   $ TESTRACEDIR=`pwd`
   $ export TESTRACEDIR
   $ cat > test-race.t <<EOF
   >   $ echo 1
   >   $ echo "# a new line" >> $TESTRACEDIR/test-race.t
   > EOF
 
   $ rt -i test-race.t
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/test-race.t
   +++ $TESTTMP/test-race.t.err
   @@ -1,2 +1,3 @@
      $ echo 1
   +  1
      $ echo "# a new line" >> $TESTTMP/test-race.t
   Reference output has changed (run again to prompt changes)
   ERROR: test-race.t output changed
   !
   Failed test-race.t: output changed
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
   $ rm test-race.t
 
 When "#testcases" is used in .t files
 
   $ cat >> test-cases.t <<EOF
   > #testcases a b
   > #if a
   >   $ echo 1
   > #endif
   > #if b
   >   $ echo 2
   > #endif
   > EOF
 
   $ cat <<EOF | rt -i test-cases.t 2>&1
   > y
   > y
   > EOF
   running 2 tests using 1 parallel processes 
   
   --- $TESTTMP/test-cases.t
   +++ $TESTTMP/test-cases.t#a.err
   @@ -1,6 +1,7 @@
    #testcases a b
    #if a
      $ echo 1
   +  1
    #endif
    #if b
      $ echo 2
   Accept this change? [y/N] .
   --- $TESTTMP/test-cases.t
   +++ $TESTTMP/test-cases.t#b.err
   @@ -5,4 +5,5 @@
    #endif
    #if b
      $ echo 2
   +  2
    #endif
   Accept this change? [y/N] .
   # Ran 2 tests, 0 skipped, 0 failed.
 
   $ cat test-cases.t
   #testcases a b
   #if a
     $ echo 1
     1
   #endif
   #if b
     $ echo 2
     2
   #endif
 
   $ cat >> test-cases.t <<'EOF'
   > #if a
   >   $ NAME=A
   > #else
   >   $ NAME=B
   > #endif
   >   $ echo $NAME
   >   A (a !)
   >   B (b !)
   > EOF
   $ rt test-cases.t
   running 2 tests using 1 parallel processes 
   ..
   # Ran 2 tests, 0 skipped, 0 failed.
 
 When using multiple dimensions of "#testcases" in .t files
 
   $ cat > test-cases.t <<'EOF'
   > #testcases a b
   > #testcases c d
   > #if a d
   >   $ echo $TESTCASE
   >   a#d
   > #endif
   > #if b c
   >   $ echo yes
   >   no
   > #endif
   > EOF
   $ rt test-cases.t
   running 4 tests using 1 parallel processes 
   ..
   --- $TESTTMP/test-cases.t
   +++ $TESTTMP/test-cases.t#b#c.err
   @@ -6,5 +6,5 @@
    #endif
    #if b c
      $ echo yes
   -  no
   +  yes
    #endif
   
   ERROR: test-cases.t#b#c output changed
   !.
   Failed test-cases.t#b#c: output changed
   # Ran 4 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
   $ rt --retest
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/test-cases.t
   +++ $TESTTMP/test-cases.t#b#c.err
   @@ -6,5 +6,5 @@
    #endif
    #if b c
      $ echo yes
   -  no
   +  yes
    #endif
   
   ERROR: test-cases.t#b#c output changed
   !
   Failed test-cases.t#b#c: output changed
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
   $ rm test-cases.t#b#c.err
   $ rm test-cases.t
 
 (reinstall)
   $ mv backup test-failure.t
 
 No Diff
 ===============
 
   $ rt --nodiff
   running 2 tests using 1 parallel processes 
   !.
   Failed test-failure.t: output changed
   # Ran 2 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 test --tmpdir support
   $ rt --tmpdir=$TESTTMP/keep test-success.t
   running 1 tests using 1 parallel processes 
   
   Keeping testtmp dir: $TESTTMP/keep/child1/test-success.t
   Keeping threadtmp dir: $TESTTMP/keep/child1 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
 
 timeouts
 ========
   $ cat > test-timeout.t <<EOF
   >   $ sleep 2
   >   $ echo pass
   >   pass
   > EOF
   > echo '#require slow' > test-slow-timeout.t
   > cat test-timeout.t >> test-slow-timeout.t
   $ rt --timeout=1 --slowtimeout=3 test-timeout.t test-slow-timeout.t
   running 2 tests using 1 parallel processes 
   st
   Skipped test-slow-timeout.t: missing feature: allow slow tests (use --allow-slow-tests)
   Failed test-timeout.t: timed out
   # Ran 1 tests, 1 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
   $ rt --timeout=1 --slowtimeout=3 \
   > test-timeout.t test-slow-timeout.t --allow-slow-tests
   running 2 tests using 1 parallel processes 
   .t
   Failed test-timeout.t: timed out
   # Ran 2 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
   $ rm test-timeout.t test-slow-timeout.t
 
 test for --time
 ==================
 
   $ rt test-success.t --time
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
   # Producing time report
   start   end     cuser   csys    real      Test
   \s*[\d\.]{5,8} \s*[\d\.]{5,8} \s*[\d\.]{5,8} \s*[\d\.]{5,8} \s*[\d\.]{5,8}   test-success.t (re)
 
 test for --time with --job enabled
 ====================================
 
   $ rt test-success.t --time --jobs 2
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
   # Producing time report
   start   end     cuser   csys    real      Test
   \s*[\d\.]{5,8} \s*[\d\.]{5,8} \s*[\d\.]{5,8} \s*[\d\.]{5,8} \s*[\d\.]{5,8}   test-success.t (re)
 
 Skips
 ================
   $ cat > test-skip.t <<EOF
   >   $ echo xyzzy
   > #if true
   > #require false
   > #end
   > EOF
   $ cat > test-noskip.t <<EOF
   > #if false
   > #require false
   > #endif
   > EOF
   $ rt --nodiff
   running 4 tests using 1 parallel processes 
   !.s.
   Skipped test-skip.t: missing feature: nail clipper
   Failed test-failure.t: output changed
   # Ran 3 tests, 1 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
   $ rm test-noskip.t
   $ rt --keyword xyzzy
   running 3 tests using 1 parallel processes 
   .s
   Skipped test-skip.t: missing feature: nail clipper
   # Ran 2 tests, 2 skipped, 0 failed.
 
 Skips with xml
   $ rt --keyword xyzzy \
   >  --xunit=xunit.xml
   running 3 tests using 1 parallel processes 
   .s
   Skipped test-skip.t: missing feature: nail clipper
   # Ran 2 tests, 2 skipped, 0 failed.
   $ cat xunit.xml
   <?xml version="1.0" encoding="utf-8"?>
   <testsuite errors="0" failures="0" name="run-tests" skipped="2" tests="2">
     <testcase name="test-success.t" time="*"/> (glob)
     <testcase name="test-skip.t">
       <skipped><![CDATA[missing feature: nail clipper]]></skipped> (py38 !)
       <skipped> (no-py38 !)
   <![CDATA[missing feature: nail clipper]]>    </skipped> (no-py38 !)
     </testcase>
   </testsuite>
 
 Missing skips or blacklisted skips don't count as executed:
   $ mkdir tests
   $ echo tests/test-failure.t > blacklist
   $ cp test-failure.t tests
   $ rt --blacklist=blacklist --json\
   >   tests/test-failure.t tests/test-bogus.t
   running 2 tests using 1 parallel processes 
   ss
   Skipped test-bogus.t: Doesn't exist
   Skipped test-failure.t: blacklisted
   # Ran 0 tests, 2 skipped, 0 failed.
   $ cat tests/report.json
   testreport ={
       "test-bogus.t": {
           "result": "skip"
       },
       "test-failure.t": {
           "result": "skip"
       }
   } (no-eol)
   $ rm -r tests
   $ echo test-failure.t > blacklist
 
 Whitelist trumps blacklist
   $ echo test-failure.t > whitelist
   $ rt --blacklist=blacklist --whitelist=whitelist --json\
   >   test-failure.t test-bogus.t
   running 2 tests using 1 parallel processes 
   s
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/test-failure.t.err
   @@ -1,5 +1,5 @@
      $ echo babar
   -  rataxes
   +  babar
    This is a noop statement so that
    this test is still more bytes than success.
    pad pad pad pad............................................................
   
   ERROR: test-failure.t output changed
   !
   Skipped test-bogus.t: Doesn't exist
   Failed test-failure.t: output changed
   # Ran 1 tests, 1 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 Ensure that --test-list causes only the tests listed in that file to
 be executed.
   $ echo test-success.t >> onlytest
   $ rt --test-list=onlytest
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
   $ echo test-bogus.t >> anothertest
   $ rt --test-list=onlytest --test-list=anothertest
   running 2 tests using 1 parallel processes 
   s.
   Skipped test-bogus.t: Doesn't exist
   # Ran 1 tests, 1 skipped, 0 failed.
   $ rm onlytest anothertest
 
 test for --json
 ==================
 
   $ rt --json
   running 3 tests using 1 parallel processes 
   
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/test-failure.t.err
   @@ -1,5 +1,5 @@
      $ echo babar
   -  rataxes
   +  babar
    This is a noop statement so that
    this test is still more bytes than success.
    pad pad pad pad............................................................
   
   ERROR: test-failure.t output changed
   !.s
   Skipped test-skip.t: missing feature: nail clipper
   Failed test-failure.t: output changed
   # Ran 2 tests, 1 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
   $ cat report.json
   testreport ={
       "test-failure.t": [\{] (re)
           "csys": "\s*\d+\.\d{3,4}", ? (re)
           "cuser": "\s*\d+\.\d{3,4}", ? (re)
           "diff": "---.+\+\+\+.+", ? (re)
           "end": "\s*\d+\.\d{3,4}", ? (re)
           "result": "failure", ? (re)
           "start": "\s*\d+\.\d{3,4}", ? (re)
           "time": "\s*\d+\.\d{3,4}" (re)
       }, ? (re)
       "test-skip.t": {
           "csys": "\s*\d+\.\d{3,4}", ? (re)
           "cuser": "\s*\d+\.\d{3,4}", ? (re)
           "diff": "", ? (re)
           "end": "\s*\d+\.\d{3,4}", ? (re)
           "result": "skip", ? (re)
           "start": "\s*\d+\.\d{3,4}", ? (re)
           "time": "\s*\d+\.\d{3,4}" (re)
       }, ? (re)
       "test-success.t": [\{] (re)
           "csys": "\s*\d+\.\d{3,4}", ? (re)
           "cuser": "\s*\d+\.\d{3,4}", ? (re)
           "diff": "", ? (re)
           "end": "\s*\d+\.\d{3,4}", ? (re)
           "result": "success", ? (re)
           "start": "\s*\d+\.\d{3,4}", ? (re)
           "time": "\s*\d+\.\d{3,4}" (re)
       }
   } (no-eol)
 --json with --outputdir
 
   $ rm report.json
   $ rm -r output
   $ mkdir output
   $ rt --json --outputdir output
   running 3 tests using 1 parallel processes 
   
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/output/test-failure.t.err
   @@ -1,5 +1,5 @@
      $ echo babar
   -  rataxes
   +  babar
    This is a noop statement so that
    this test is still more bytes than success.
    pad pad pad pad............................................................
   
   ERROR: test-failure.t output changed
   !.s
   Skipped test-skip.t: missing feature: nail clipper
   Failed test-failure.t: output changed
   # Ran 2 tests, 1 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
   $ f report.json
   report.json: file not found
   $ cat output/report.json
   testreport ={
       "test-failure.t": [\{] (re)
           "csys": "\s*\d+\.\d{3,4}", ? (re)
           "cuser": "\s*\d+\.\d{3,4}", ? (re)
           "diff": "---.+\+\+\+.+", ? (re)
           "end": "\s*\d+\.\d{3,4}", ? (re)
           "result": "failure", ? (re)
           "start": "\s*\d+\.\d{3,4}", ? (re)
           "time": "\s*\d+\.\d{3,4}" (re)
       }, ? (re)
       "test-skip.t": {
           "csys": "\s*\d+\.\d{3,4}", ? (re)
           "cuser": "\s*\d+\.\d{3,4}", ? (re)
           "diff": "", ? (re)
           "end": "\s*\d+\.\d{3,4}", ? (re)
           "result": "skip", ? (re)
           "start": "\s*\d+\.\d{3,4}", ? (re)
           "time": "\s*\d+\.\d{3,4}" (re)
       }, ? (re)
       "test-success.t": [\{] (re)
           "csys": "\s*\d+\.\d{3,4}", ? (re)
           "cuser": "\s*\d+\.\d{3,4}", ? (re)
           "diff": "", ? (re)
           "end": "\s*\d+\.\d{3,4}", ? (re)
           "result": "success", ? (re)
           "start": "\s*\d+\.\d{3,4}", ? (re)
           "time": "\s*\d+\.\d{3,4}" (re)
       }
   } (no-eol)
   $ ls -a output
   .
   ..
   .testtimes
   report.json
   test-failure.t.err
 
 Test that failed test accepted through interactive are properly reported:
 
   $ cp test-failure.t backup
   $ echo y | rt --json -i
   running 3 tests using 1 parallel processes 
   
   --- $TESTTMP/test-failure.t
   +++ $TESTTMP/test-failure.t.err
   @@ -1,5 +1,5 @@
      $ echo babar
   -  rataxes
   +  babar
    This is a noop statement so that
    this test is still more bytes than success.
    pad pad pad pad............................................................
   Accept this change? [y/N] ..s
   Skipped test-skip.t: missing feature: nail clipper
   # Ran 2 tests, 1 skipped, 0 failed.
 
   $ cat report.json
   testreport ={
       "test-failure.t": [\{] (re)
           "csys": "\s*\d+\.\d{3,4}", ? (re)
           "cuser": "\s*\d+\.\d{3,4}", ? (re)
           "diff": "", ? (re)
           "end": "\s*\d+\.\d{3,4}", ? (re)
           "result": "success", ? (re)
           "start": "\s*\d+\.\d{3,4}", ? (re)
           "time": "\s*\d+\.\d{3,4}" (re)
       }, ? (re)
       "test-skip.t": {
           "csys": "\s*\d+\.\d{3,4}", ? (re)
           "cuser": "\s*\d+\.\d{3,4}", ? (re)
           "diff": "", ? (re)
           "end": "\s*\d+\.\d{3,4}", ? (re)
           "result": "skip", ? (re)
           "start": "\s*\d+\.\d{3,4}", ? (re)
           "time": "\s*\d+\.\d{3,4}" (re)
       }, ? (re)
       "test-success.t": [\{] (re)
           "csys": "\s*\d+\.\d{3,4}", ? (re)
           "cuser": "\s*\d+\.\d{3,4}", ? (re)
           "diff": "", ? (re)
           "end": "\s*\d+\.\d{3,4}", ? (re)
           "result": "success", ? (re)
           "start": "\s*\d+\.\d{3,4}", ? (re)
           "time": "\s*\d+\.\d{3,4}" (re)
       }
   } (no-eol)
   $ mv backup test-failure.t
 
 backslash on end of line with glob matching is handled properly
 
   $ cat > test-glob-backslash.t << EOF
   >   $ echo 'foo bar \\'
   >   foo * \ (glob)
   > EOF
 
   $ rt test-glob-backslash.t
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
 
   $ rm -f test-glob-backslash.t
 
 Test globbing of local IP addresses
   $ echo 172.16.18.1
   $LOCALIP (glob)
   $ echo dead:beef::1
   $LOCALIP (glob)
 
 Add support for external test formatter
 =======================================
 
-  $ CUSTOM_TEST_RESULT=basic_test_result "$PYTHON" $TESTDIR/run-tests.py --with-hg=`which hg` -j1 "$@" test-success.t test-failure.t
+  $ CUSTOM_TEST_RESULT=basic_test_result "$PYTHON" $TESTDIR/run-tests.py --with-hg=$HGTEST_REAL_HG -j1 "$@" test-success.t test-failure.t
   running 2 tests using 1 parallel processes 
   
   # Ran 2 tests, 0 skipped, 0 failed.
   ON_START! <__main__.TestSuite tests=[<__main__.TTest testMethod=test-failure.t>, <__main__.TTest testMethod=test-success.t>]>
   FAILURE! test-failure.t output changed
   SUCCESS! test-success.t
   ON_END!
 
 Test reusability for third party tools
 ======================================
 
   $ THISTESTDIR="$TESTDIR"
   $ export THISTESTDIR
   $ THISTESTTMP="$TESTTMP"
   $ export THISTESTTMP
 
 #if windows
 
   $ NEWTESTDIR="$THISTESTTMP"\\anothertests
 
 #else
 
   $ NEWTESTDIR="$THISTESTTMP"/anothertests
 
 #endif
 
   $ export NEWTESTDIR
 
   $ echo creating some new test in: $NEWTESTDIR
   creating some new test in: $TESTTMP\anothertests (windows !)
   creating some new test in: $TESTTMP/anothertests (no-windows !)
   $ mkdir "$NEWTESTDIR"
   $ cd "$NEWTESTDIR"
 
 test that `run-tests.py` can execute hghave, even if it runs not in
 Mercurial source tree.
 
   $ cat > test-hghave.t <<EOF
   > #require true
   >   $ echo foo
   >   foo
   > EOF
   $ rt test-hghave.t
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
 
 test that RUNTESTDIR refers the directory, in which `run-tests.py` now
 running is placed.
 
 
   $ cat > test-runtestdir.t <<EOF
   > # \$THISTESTDIR, in which test-run-tests.t (this test file) is placed
   > # \$THISTESTTMP, in which test-run-tests.t (this test file) is placed
   > # \$TESTDIR, in which test-runtestdir.t is placed (expanded at runtime)
   > # \$RUNTESTDIR, in which run-tests.py is placed (expanded at runtime)
   > 
   >   $ test "\$TESTDIR" = "\$NEWTESTDIR"
   > If this prints a path, that means RUNTESTDIR didn't equal
   > THISTESTDIR as it should have.
   >   $ test "\$RUNTESTDIR" = "\$THISTESTDIR" || echo "\$RUNTESTDIR"
   > This should print the start of check-code. If this passes but the
   > previous check failed, that means we found a copy of check-code at whatever
   > RUNTESTSDIR ended up containing, even though it doesn't match THISTESTDIR.
   >   $ head -n 3 "\$RUNTESTDIR"/../contrib/check-code.py | sed 's@.!.*python3@#!USRBINENVPY@'
   >   #!USRBINENVPY
   >   #
   >   # check-code - a style and portability checker for Mercurial
   > EOF
   $ rt test-runtestdir.t
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
 
 #if execbit
 
 test that TESTDIR is referred in PATH
 
   $ cat > custom-command.sh <<EOF
   > #!/bin/sh
   > echo "hello world"
   > EOF
   $ chmod +x custom-command.sh
   $ cat > test-testdir-path.t <<EOF
   >   $ custom-command.sh
   >   hello world
   > EOF
   $ rt test-testdir-path.t
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
 
 #endif
 
 test support for --allow-slow-tests
   $ cat > test-very-slow-test.t <<EOF
   > #require slow
   >   $ echo pass
   >   pass
   > EOF
   $ rt test-very-slow-test.t
   running 1 tests using 1 parallel processes 
   s
   Skipped test-very-slow-test.t: missing feature: allow slow tests (use --allow-slow-tests)
   # Ran 0 tests, 1 skipped, 0 failed.
   $ rt $HGTEST_RUN_TESTS_PURE --allow-slow-tests test-very-slow-test.t
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
 
 support for running a test outside the current directory
   $ mkdir nonlocal
   $ cat > nonlocal/test-is-not-here.t << EOF
   >   $ echo pass
   >   pass
   > EOF
   $ rt nonlocal/test-is-not-here.t
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
 
 support for automatically discovering test if arg is a folder
   $ mkdir tmp && cd tmp
 
   $ cat > test-uno.t << EOF
   >   $ echo line
   >   line
   > EOF
 
   $ cp test-uno.t test-dos.t
   $ cd ..
   $ cp -R tmp tmpp
   $ cp tmp/test-uno.t test-solo.t
 
   $ rt tmp/ test-solo.t tmpp
   running 5 tests using 1 parallel processes 
   .....
   # Ran 5 tests, 0 skipped, 0 failed.
   $ rm -rf tmp tmpp
 
 support for running run-tests.py from another directory
   $ mkdir tmp && cd tmp
 
   $ cat > useful-file.sh << EOF
   > important command
   > EOF
 
   $ cat > test-folder.t << EOF
   >   $ cat \$TESTDIR/useful-file.sh
   >   important command
   > EOF
 
   $ cat > test-folder-fail.t << EOF
   >   $ cat \$TESTDIR/useful-file.sh
   >   important commando
   > EOF
 
   $ cd ..
   $ rt tmp/test-*.t
   running 2 tests using 1 parallel processes 
   
   --- $TESTTMP/anothertests/tmp/test-folder-fail.t
   +++ $TESTTMP/anothertests/tmp/test-folder-fail.t.err
   @@ -1,2 +1,2 @@
      $ cat $TESTDIR/useful-file.sh
   -  important commando
   +  important command
   
   ERROR: test-folder-fail.t output changed
   !.
   Failed test-folder-fail.t: output changed
   # Ran 2 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 support for bisecting failed tests automatically
   $ hg init bisect
   $ cd bisect
   $ cat >> test-bisect.t <<EOF
   >   $ echo pass
   >   pass
   > EOF
   $ hg add test-bisect.t
   $ hg ci -m 'good'
   $ cat >> test-bisect.t <<EOF
   >   $ echo pass
   >   fail
   > EOF
   $ hg ci -m 'bad'
   $ rt --known-good-rev=0 test-bisect.t
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/anothertests/bisect/test-bisect.t
   +++ $TESTTMP/anothertests/bisect/test-bisect.t.err
   @@ -1,4 +1,4 @@
      $ echo pass
      pass
      $ echo pass
   -  fail
   +  pass
   
   ERROR: test-bisect.t output changed
   !
   Failed test-bisect.t: output changed
   test-bisect.t broken by 72cbf122d116 (bad)
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
   $ cd ..
 
 support bisecting a separate repo
 
   $ hg init bisect-dependent
   $ cd bisect-dependent
   $ cat > test-bisect-dependent.t <<EOF
   >   $ tail -1 \$TESTDIR/../bisect/test-bisect.t
   >     pass
   > EOF
   $ hg commit -Am dependent test-bisect-dependent.t
 
   $ rt --known-good-rev=0 test-bisect-dependent.t
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/anothertests/bisect-dependent/test-bisect-dependent.t
   +++ $TESTTMP/anothertests/bisect-dependent/test-bisect-dependent.t.err
   @@ -1,2 +1,2 @@
      $ tail -1 $TESTDIR/../bisect/test-bisect.t
   -    pass
   +    fail
   
   ERROR: test-bisect-dependent.t output changed
   !
   Failed test-bisect-dependent.t: output changed
   Failed to identify failure point for test-bisect-dependent.t
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
   $ rt --bisect-repo=../test-bisect test-bisect-dependent.t
   usage: run-tests.py [options] [tests]
   run-tests.py: error: --bisect-repo cannot be used without --known-good-rev
   [2]
 
   $ rt --known-good-rev=0 --bisect-repo=../bisect test-bisect-dependent.t
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/anothertests/bisect-dependent/test-bisect-dependent.t
   +++ $TESTTMP/anothertests/bisect-dependent/test-bisect-dependent.t.err
   @@ -1,2 +1,2 @@
      $ tail -1 $TESTDIR/../bisect/test-bisect.t
   -    pass
   +    fail
   
   ERROR: test-bisect-dependent.t output changed
   !
   Failed test-bisect-dependent.t: output changed
   test-bisect-dependent.t broken by 72cbf122d116 (bad)
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
   $ cd ..
 
 Test a broken #if statement doesn't break run-tests threading.
 ==============================================================
   $ mkdir broken
   $ cd broken
   $ cat > test-broken.t <<EOF
   > true
   > #if notarealhghavefeature
   >   $ false
   > #endif
   > EOF
   $ for f in 1 2 3 4 ; do
   > cat > test-works-$f.t <<EOF
   > This is test case $f
   >   $ sleep 1
   > EOF
   > done
   $ rt -j 2
   running 5 tests using 2 parallel processes 
   ....
   # Ran 5 tests, 0 skipped, 0 failed.
   skipped: unknown feature: notarealhghavefeature
   
   $ cd ..
   $ rm -rf broken
 
 Test cases in .t files
 ======================
   $ mkdir cases
   $ cd cases
   $ cat > test-cases-abc.t <<'EOF'
   > #testcases A B C
   >   $ V=B
   > #if A
   >   $ V=A
   > #endif
   > #if C
   >   $ V=C
   > #endif
   >   $ echo $V | sed 's/A/C/'
   >   C
   > #if C
   >   $ [ $V = C ]
   > #endif
   > #if A
   >   $ [ $V = C ]
   >   [1]
   > #endif
   > #if no-C
   >   $ [ $V = C ]
   >   [1]
   > #endif
   >   $ [ $V = D ]
   >   [1]
   > EOF
   $ rt
   running 3 tests using 1 parallel processes 
   .
   --- $TESTTMP/anothertests/cases/test-cases-abc.t
   +++ $TESTTMP/anothertests/cases/test-cases-abc.t#B.err
   @@ -7,7 +7,7 @@
      $ V=C
    #endif
      $ echo $V | sed 's/A/C/'
   -  C
   +  B
    #if C
      $ [ $V = C ]
    #endif
   
   ERROR: test-cases-abc.t#B output changed
   !.
   Failed test-cases-abc.t#B: output changed
   # Ran 3 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 --restart works
 
   $ rt --restart
   running 2 tests using 1 parallel processes 
   
   --- $TESTTMP/anothertests/cases/test-cases-abc.t
   +++ $TESTTMP/anothertests/cases/test-cases-abc.t#B.err
   @@ -7,7 +7,7 @@
      $ V=C
    #endif
      $ echo $V | sed 's/A/C/'
   -  C
   +  B
    #if C
      $ [ $V = C ]
    #endif
   
   ERROR: test-cases-abc.t#B output changed
   !.
   Failed test-cases-abc.t#B: output changed
   # Ran 2 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 --restart works with outputdir
 
   $ mkdir output
   $ mv test-cases-abc.t#B.err output
   $ rt --restart --outputdir output
   running 2 tests using 1 parallel processes 
   
   --- $TESTTMP/anothertests/cases/test-cases-abc.t
   +++ $TESTTMP/anothertests/cases/output/test-cases-abc.t#B.err
   @@ -7,7 +7,7 @@
      $ V=C
    #endif
      $ echo $V | sed 's/A/C/'
   -  C
   +  B
    #if C
      $ [ $V = C ]
    #endif
   
   ERROR: test-cases-abc.t#B output changed
   !.
   Failed test-cases-abc.t#B: output changed
   # Ran 2 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 Test TESTCASE variable
 
   $ cat > test-cases-ab.t <<'EOF'
   >   $ dostuff() {
   >   >   echo "In case $TESTCASE"
   >   > }
   > #testcases A B
   > #if A
   >   $ dostuff
   >   In case A
   > #endif
   > #if B
   >   $ dostuff
   >   In case B
   > #endif
   > EOF
   $ rt test-cases-ab.t
   running 2 tests using 1 parallel processes 
   ..
   # Ran 2 tests, 0 skipped, 0 failed.
 
 Support running a specific test case
 
   $ rt "test-cases-abc.t#B"
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/anothertests/cases/test-cases-abc.t
   +++ $TESTTMP/anothertests/cases/test-cases-abc.t#B.err
   @@ -7,7 +7,7 @@
      $ V=C
    #endif
      $ echo $V | sed 's/A/C/'
   -  C
   +  B
    #if C
      $ [ $V = C ]
    #endif
   
   ERROR: test-cases-abc.t#B output changed
   !
   Failed test-cases-abc.t#B: output changed
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 Support running multiple test cases in the same file
 
   $ rt test-cases-abc.t#B test-cases-abc.t#C
   running 2 tests using 1 parallel processes 
   
   --- $TESTTMP/anothertests/cases/test-cases-abc.t
   +++ $TESTTMP/anothertests/cases/test-cases-abc.t#B.err
   @@ -7,7 +7,7 @@
      $ V=C
    #endif
      $ echo $V | sed 's/A/C/'
   -  C
   +  B
    #if C
      $ [ $V = C ]
    #endif
   
   ERROR: test-cases-abc.t#B output changed
   !.
   Failed test-cases-abc.t#B: output changed
   # Ran 2 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 Support ignoring invalid test cases
 
   $ rt test-cases-abc.t#B test-cases-abc.t#D
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/anothertests/cases/test-cases-abc.t
   +++ $TESTTMP/anothertests/cases/test-cases-abc.t#B.err
   @@ -7,7 +7,7 @@
      $ V=C
    #endif
      $ echo $V | sed 's/A/C/'
   -  C
   +  B
    #if C
      $ [ $V = C ]
    #endif
   
   ERROR: test-cases-abc.t#B output changed
   !
   Failed test-cases-abc.t#B: output changed
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 Support running complex test cases names
 
   $ cat > test-cases-advanced-cases.t <<'EOF'
   > #testcases simple case-with-dashes casewith_-.chars
   >   $ echo $TESTCASE
   >   simple
   > EOF
 
   $ cat test-cases-advanced-cases.t
   #testcases simple case-with-dashes casewith_-.chars
     $ echo $TESTCASE
     simple
 
   $ rt test-cases-advanced-cases.t
   running 3 tests using 1 parallel processes 
   
   --- $TESTTMP/anothertests/cases/test-cases-advanced-cases.t
   +++ $TESTTMP/anothertests/cases/test-cases-advanced-cases.t#case-with-dashes.err
   @@ -1,3 +1,3 @@
    #testcases simple case-with-dashes casewith_-.chars
      $ echo $TESTCASE
   -  simple
   +  case-with-dashes
   
   ERROR: test-cases-advanced-cases.t#case-with-dashes output changed
   !
   --- $TESTTMP/anothertests/cases/test-cases-advanced-cases.t
   +++ $TESTTMP/anothertests/cases/test-cases-advanced-cases.t#casewith_-.chars.err
   @@ -1,3 +1,3 @@
    #testcases simple case-with-dashes casewith_-.chars
      $ echo $TESTCASE
   -  simple
   +  casewith_-.chars
   
   ERROR: test-cases-advanced-cases.t#casewith_-.chars output changed
   !.
   Failed test-cases-advanced-cases.t#case-with-dashes: output changed
   Failed test-cases-advanced-cases.t#casewith_-.chars: output changed
   # Ran 3 tests, 0 skipped, 2 failed.
   python hash seed: * (glob)
   [1]
 
   $ rt "test-cases-advanced-cases.t#case-with-dashes"
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/anothertests/cases/test-cases-advanced-cases.t
   +++ $TESTTMP/anothertests/cases/test-cases-advanced-cases.t#case-with-dashes.err
   @@ -1,3 +1,3 @@
    #testcases simple case-with-dashes casewith_-.chars
      $ echo $TESTCASE
   -  simple
   +  case-with-dashes
   
   ERROR: test-cases-advanced-cases.t#case-with-dashes output changed
   !
   Failed test-cases-advanced-cases.t#case-with-dashes: output changed
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
   $ rt "test-cases-advanced-cases.t#casewith_-.chars"
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/anothertests/cases/test-cases-advanced-cases.t
   +++ $TESTTMP/anothertests/cases/test-cases-advanced-cases.t#casewith_-.chars.err
   @@ -1,3 +1,3 @@
    #testcases simple case-with-dashes casewith_-.chars
      $ echo $TESTCASE
   -  simple
   +  casewith_-.chars
   
   ERROR: test-cases-advanced-cases.t#casewith_-.chars output changed
   !
   Failed test-cases-advanced-cases.t#casewith_-.chars: output changed
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 Test automatic pattern replacement
 ==================================
 
   $ cat << EOF >> common-pattern.py
   > substitutions = [
   >     (br'foo-(.*)\\b',
   >      br'\$XXX=\\1\$'),
   >     (br'bar\\n',
   >      br'\$YYY$\\n'),
   > ]
   > EOF
 
   $ cat << EOF >> test-substitution.t
   >   $ echo foo-12
   >   \$XXX=12$
   >   $ echo foo-42
   >   \$XXX=42$
   >   $ echo bar prior
   >   bar prior
   >   $ echo lastbar
   >   last\$YYY$
   >   $ echo foo-bar foo-baz
   > EOF
 
   $ rt test-substitution.t
   running 1 tests using 1 parallel processes 
   
   --- $TESTTMP/anothertests/cases/test-substitution.t
   +++ $TESTTMP/anothertests/cases/test-substitution.t.err
   @@ -7,3 +7,4 @@
      $ echo lastbar
      last$YYY$
      $ echo foo-bar foo-baz
   +  $XXX=bar foo-baz$
   
   ERROR: test-substitution.t output changed
   !
   Failed test-substitution.t: output changed
   # Ran 1 tests, 0 skipped, 1 failed.
   python hash seed: * (glob)
   [1]
 
 --extra-config-opt works
 
   $ cat << EOF >> test-config-opt.t
   >   $ hg init test-config-opt
   >   $ hg -R test-config-opt purge
   >   $ echo "HGTESTEXTRAEXTENSIONS: \$HGTESTEXTRAEXTENSIONS"
   >   HGTESTEXTRAEXTENSIONS: purge
   > EOF
 
   $ rt --extra-config-opt extensions.purge= \
   >    --extra-config-opt not.an.extension=True test-config-opt.t
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.
 
 Test conditional output matching
 ================================
 
   $ cat << EOF >> test-conditional-matching.t
   > #testcases foo bar
   >   $ echo richtig
   >   richtig (true !)
   >   $ echo falsch
   >   falsch (false !)
   > #if foo
   >   $ echo arthur
   >   arthur (bar !)
   > #endif
   >   $ echo celeste
   >   celeste (foo !)
   >   $ echo zephir
   >   zephir (bar !)
   > EOF
 
   $ rt test-conditional-matching.t
   running 2 tests using 1 parallel processes 
   
   --- $TESTTMP/anothertests/cases/test-conditional-matching.t
   +++ $TESTTMP/anothertests/cases/test-conditional-matching.t#bar.err
   @@ -3,11 +3,13 @@
      richtig (true !)
      $ echo falsch
      falsch (false !)
   +  falsch
    #if foo
      $ echo arthur
      arthur \(bar !\) (re)
    #endif
      $ echo celeste
      celeste \(foo !\) (re)
   +  celeste
      $ echo zephir
      zephir \(bar !\) (re)
   
   ERROR: test-conditional-matching.t#bar output changed
   !
   --- $TESTTMP/anothertests/cases/test-conditional-matching.t
   +++ $TESTTMP/anothertests/cases/test-conditional-matching.t#foo.err
   @@ -3,11 +3,14 @@
      richtig (true !)
      $ echo falsch
      falsch (false !)
   +  falsch
    #if foo
      $ echo arthur
      arthur \(bar !\) (re)
   +  arthur
    #endif
      $ echo celeste
      celeste \(foo !\) (re)
      $ echo zephir
      zephir \(bar !\) (re)
   +  zephir
   
   ERROR: test-conditional-matching.t#foo output changed
   !
   Failed test-conditional-matching.t#bar: output changed
   Failed test-conditional-matching.t#foo: output changed
   # Ran 2 tests, 0 skipped, 2 failed.
   python hash seed: * (glob)
   [1]
 
 Test that a proper "python" has been set up
 ===========================================
 
 (with a small check-code work around)
   $ printf "#!/usr/bi" > test-py3.tmp
   $ printf "n/en" >> test-py3.tmp
   $ cat << EOF >> test-py3.tmp
   > v python3
   > import sys
   > print('.'.join(str(x) for x in sys.version_info))
   > EOF
   $ mv test-py3.tmp test-py3.py
   $ chmod +x test-py3.py
 
 (with a small check-code work around)
   $ printf "#!/usr/bi" > test-py.tmp
   $ printf "n/en" >> test-py.tmp
   $ cat << EOF >> test-py.tmp
   > v python
   > import sys
   > print('.'.join(str(x) for x in sys.version_info))
   > EOF
   $ mv test-py.tmp test-py.py
   $ chmod +x test-py.py
 
   $ ./test-py3.py
   3.* (glob)
   $ ./test-py.py
   2.* (glob) (no-py3 !)
   3.* (glob) (py3 !)