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iptestcontroller.py
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# -*- coding: utf-8 -*-
"""IPython Test Process Controller
This module runs one or more subprocesses which will actually run the IPython
test suite.
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2009-2011 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
from __future__ import print_function
import argparse
import multiprocessing.pool
from multiprocessing import Process, Queue
import os
import shutil
import signal
import sys
import subprocess
import time
from .iptest import have, test_group_names as py_test_group_names, test_sections
from IPython.utils.path import compress_user
from IPython.utils.py3compat import bytes_to_str
from IPython.utils.sysinfo import get_sys_info
from IPython.utils.tempdir import TemporaryDirectory
class TestController(object):
"""Run tests in a subprocess
"""
#: str, IPython test suite to be executed.
section = None
#: list, command line arguments to be executed
cmd = None
#: dict, extra environment variables to set for the subprocess
env = None
#: list, TemporaryDirectory instances to clear up when the process finishes
dirs = None
#: subprocess.Popen instance
process = None
#: str, process stdout+stderr
stdout = None
#: bool, whether to capture process stdout & stderr
buffer_output = False
def __init__(self):
self.cmd = []
self.env = {}
self.dirs = []
def launch(self):
# print('*** ENV:', self.env) # dbg
# print('*** CMD:', self.cmd) # dbg
env = os.environ.copy()
env.update(self.env)
output = subprocess.PIPE if self.buffer_output else None
stdout = subprocess.STDOUT if self.buffer_output else None
self.process = subprocess.Popen(self.cmd, stdout=output,
stderr=stdout, env=env)
def wait(self):
self.stdout, _ = self.process.communicate()
return self.process.returncode
def cleanup_process(self):
"""Cleanup on exit by killing any leftover processes."""
subp = self.process
if subp is None or (subp.poll() is not None):
return # Process doesn't exist, or is already dead.
try:
print('Cleaning up stale PID: %d' % subp.pid)
subp.kill()
except: # (OSError, WindowsError) ?
# This is just a best effort, if we fail or the process was
# really gone, ignore it.
pass
else:
for i in range(10):
if subp.poll() is None:
time.sleep(0.1)
else:
break
if subp.poll() is None:
# The process did not die...
print('... failed. Manual cleanup may be required.')
def cleanup(self):
"Kill process if it's still alive, and clean up temporary directories"
self.cleanup_process()
for td in self.dirs:
td.cleanup()
__del__ = cleanup
class PyTestController(TestController):
"""Run Python tests using IPython.testing.iptest"""
#: str, Python command to execute in subprocess
pycmd = None
def __init__(self, section):
"""Create new test runner."""
TestController.__init__(self)
self.section = section
# pycmd is put into cmd[2] in PyTestController.launch()
self.cmd = [sys.executable, '-c', None, section]
self.pycmd = "from IPython.testing.iptest import run_iptest; run_iptest()"
ipydir = TemporaryDirectory()
self.dirs.append(ipydir)
self.env['IPYTHONDIR'] = ipydir.name
self.workingdir = workingdir = TemporaryDirectory()
self.dirs.append(workingdir)
self.env['IPTEST_WORKING_DIR'] = workingdir.name
# This means we won't get odd effects from our own matplotlib config
self.env['MPLCONFIGDIR'] = workingdir.name
@property
def will_run(self):
try:
return test_sections[self.section].will_run
except KeyError:
return True
def add_xunit(self):
xunit_file = os.path.abspath(self.section + '.xunit.xml')
self.cmd.extend(['--with-xunit', '--xunit-file', xunit_file])
def add_coverage(self):
try:
sources = test_sections[self.section].includes
except KeyError:
sources = ['IPython']
coverage_rc = ("[run]\n"
"data_file = {data_file}\n"
"source =\n"
" {source}\n"
).format(data_file=os.path.abspath('.coverage.'+self.section),
source="\n ".join(sources))
config_file = os.path.join(self.workingdir.name, '.coveragerc')
with open(config_file, 'w') as f:
f.write(coverage_rc)
self.env['COVERAGE_PROCESS_START'] = config_file
self.pycmd = "import coverage; coverage.process_startup(); " + self.pycmd
def launch(self):
self.cmd[2] = self.pycmd
super(PyTestController, self).launch()
class JSController(TestController):
"""Run CasperJS tests """
def __init__(self, section):
"""Create new test runner."""
TestController.__init__(self)
self.section = section
self.ipydir = TemporaryDirectory()
self.dirs.append(self.ipydir)
self.env['IPYTHONDIR'] = self.ipydir.name
def launch(self):
# start the ipython notebook, so we get the port number
self._init_server()
import IPython.html.tests as t
test_dir = os.path.join(os.path.dirname(t.__file__), 'casperjs')
includes = '--includes=' + os.path.join(test_dir,'util.js')
test_cases = os.path.join(test_dir, 'test_cases')
port = '--port=' + str(self.server_port)
self.cmd = ['casperjs', 'test', port, includes, test_cases]
super(JSController, self).launch()
@property
def will_run(self):
return all(have[a] for a in ['zmq', 'tornado', 'jinja2', 'casperjs'])
def _init_server(self):
"Start the notebook server in a separate process"
self.queue = q = Queue()
self.server = Process(target=run_webapp, args=(q, self.ipydir.name))
self.server.start()
self.server_port = q.get()
def cleanup(self):
self.server.terminate()
self.server.join()
TestController.cleanup(self)
js_test_group_names = {'js'}
def run_webapp(q, nbdir, loglevel=0):
"""start the IPython Notebook, and pass port back to the queue"""
import os
import IPython.html.notebookapp as nbapp
import sys
sys.stderr = open(os.devnull, 'w')
os.environ["IPYTHONDIR"] = nbdir
server = nbapp.NotebookApp()
args = ['--no-browser']
args.append('--notebook-dir='+nbdir)
args.append('--profile-dir='+nbdir)
args.append('--log-level='+str(loglevel))
server.initialize(args)
# communicate the port number to the parent process
q.put(server.port)
server.start()
def prepare_controllers(options):
"""Returns two lists of TestController instances, those to run, and those
not to run."""
testgroups = options.testgroups
if testgroups:
py_testgroups = [g for g in testgroups if (g in py_test_group_names) \
or g.startswith('IPython')]
js_testgroups = [g for g in testgroups if g in js_test_group_names]
else:
py_testgroups = py_test_group_names
js_testgroups = js_test_group_names
if not options.all:
test_sections['parallel'].enabled = False
c_js = [JSController(name) for name in js_testgroups]
c_py = [PyTestController(name) for name in py_testgroups]
configure_py_controllers(c_py, xunit=options.xunit,
coverage=options.coverage, subproc_streams=options.subproc_streams,
extra_args=options.extra_args)
controllers = c_py + c_js
to_run = [c for c in controllers if c.will_run]
not_run = [c for c in controllers if not c.will_run]
return to_run, not_run
def configure_py_controllers(controllers, xunit=False, coverage=False,
subproc_streams='capture', extra_args=()):
"""Apply options for a collection of TestController objects."""
for controller in controllers:
if xunit:
controller.add_xunit()
if coverage:
controller.add_coverage()
controller.env['IPTEST_SUBPROC_STREAMS'] = subproc_streams
controller.cmd.extend(extra_args)
def do_run(controller):
try:
try:
controller.launch()
except Exception:
import traceback
traceback.print_exc()
return controller, 1 # signal failure
exitcode = controller.wait()
return controller, exitcode
except KeyboardInterrupt:
return controller, -signal.SIGINT
finally:
controller.cleanup()
def report():
"""Return a string with a summary report of test-related variables."""
inf = get_sys_info()
out = []
def _add(name, value):
out.append((name, value))
_add('IPython version', inf['ipython_version'])
_add('IPython commit', "{} ({})".format(inf['commit_hash'], inf['commit_source']))
_add('IPython package', compress_user(inf['ipython_path']))
_add('Python version', inf['sys_version'].replace('\n',''))
_add('sys.executable', compress_user(inf['sys_executable']))
_add('Platform', inf['platform'])
width = max(len(n) for (n,v) in out)
out = ["{:<{width}}: {}\n".format(n, v, width=width) for (n,v) in out]
avail = []
not_avail = []
for k, is_avail in have.items():
if is_avail:
avail.append(k)
else:
not_avail.append(k)
if avail:
out.append('\nTools and libraries available at test time:\n')
avail.sort()
out.append(' ' + ' '.join(avail)+'\n')
if not_avail:
out.append('\nTools and libraries NOT available at test time:\n')
not_avail.sort()
out.append(' ' + ' '.join(not_avail)+'\n')
return ''.join(out)
def run_iptestall(options):
"""Run the entire IPython test suite by calling nose and trial.
This function constructs :class:`IPTester` instances for all IPython
modules and package and then runs each of them. This causes the modules
and packages of IPython to be tested each in their own subprocess using
nose.
Parameters
----------
All parameters are passed as attributes of the options object.
testgroups : list of str
Run only these sections of the test suite. If empty, run all the available
sections.
fast : int or None
Run the test suite in parallel, using n simultaneous processes. If None
is passed, one process is used per CPU core. Default 1 (i.e. sequential)
inc_slow : bool
Include slow tests, like IPython.parallel. By default, these tests aren't
run.
xunit : bool
Produce Xunit XML output. This is written to multiple foo.xunit.xml files.
coverage : bool or str
Measure code coverage from tests. True will store the raw coverage data,
or pass 'html' or 'xml' to get reports.
extra_args : list
Extra arguments to pass to the test subprocesses, e.g. '-v'
"""
if options.fast != 1:
# If running in parallel, capture output so it doesn't get interleaved
TestController.buffer_output = True
to_run, not_run = prepare_controllers(options)
def justify(ltext, rtext, width=70, fill='-'):
ltext += ' '
rtext = (' ' + rtext).rjust(width - len(ltext), fill)
return ltext + rtext
# Run all test runners, tracking execution time
failed = []
t_start = time.time()
print()
if options.fast == 1:
# This actually means sequential, i.e. with 1 job
for controller in to_run:
print('IPython test group:', controller.section)
sys.stdout.flush() # Show in correct order when output is piped
controller, res = do_run(controller)
if res:
failed.append(controller)
if res == -signal.SIGINT:
print("Interrupted")
break
print()
else:
# Run tests concurrently
try:
pool = multiprocessing.pool.ThreadPool(options.fast)
for (controller, res) in pool.imap_unordered(do_run, to_run):
res_string = 'OK' if res == 0 else 'FAILED'
print(justify('IPython test group: ' + controller.section, res_string))
if res:
print(bytes_to_str(controller.stdout))
failed.append(controller)
if res == -signal.SIGINT:
print("Interrupted")
break
except KeyboardInterrupt:
return
for controller in not_run:
print(justify('IPython test group: ' + controller.section, 'NOT RUN'))
t_end = time.time()
t_tests = t_end - t_start
nrunners = len(to_run)
nfail = len(failed)
# summarize results
print('_'*70)
print('Test suite completed for system with the following information:')
print(report())
took = "Took %.3fs." % t_tests
print('Status: ', end='')
if not failed:
print('OK (%d test groups).' % nrunners, took)
else:
# If anything went wrong, point out what command to rerun manually to
# see the actual errors and individual summary
failed_sections = [c.section for c in failed]
print('ERROR - {} out of {} test groups failed ({}).'.format(nfail,
nrunners, ', '.join(failed_sections)), took)
print()
print('You may wish to rerun these, with:')
print(' iptest', *failed_sections)
print()
if options.coverage:
from coverage import coverage
cov = coverage(data_file='.coverage')
cov.combine()
cov.save()
# Coverage HTML report
if options.coverage == 'html':
html_dir = 'ipy_htmlcov'
shutil.rmtree(html_dir, ignore_errors=True)
print("Writing HTML coverage report to %s/ ... " % html_dir, end="")
sys.stdout.flush()
# Custom HTML reporter to clean up module names.
from coverage.html import HtmlReporter
class CustomHtmlReporter(HtmlReporter):
def find_code_units(self, morfs):
super(CustomHtmlReporter, self).find_code_units(morfs)
for cu in self.code_units:
nameparts = cu.name.split(os.sep)
if 'IPython' not in nameparts:
continue
ix = nameparts.index('IPython')
cu.name = '.'.join(nameparts[ix:])
# Reimplement the html_report method with our custom reporter
cov._harvest_data()
cov.config.from_args(omit='*%stests' % os.sep, html_dir=html_dir,
html_title='IPython test coverage',
)
reporter = CustomHtmlReporter(cov, cov.config)
reporter.report(None)
print('done.')
# Coverage XML report
elif options.coverage == 'xml':
cov.xml_report(outfile='ipy_coverage.xml')
if failed:
# Ensure that our exit code indicates failure
sys.exit(1)
argparser = argparse.ArgumentParser(description='Run IPython test suite')
argparser.add_argument('testgroups', nargs='*',
help='Run specified groups of tests. If omitted, run '
'all tests.')
argparser.add_argument('--all', action='store_true',
help='Include slow tests not run by default.')
argparser.add_argument('-j', '--fast', nargs='?', const=None, default=1, type=int,
help='Run test sections in parallel.')
argparser.add_argument('--xunit', action='store_true',
help='Produce Xunit XML results')
argparser.add_argument('--coverage', nargs='?', const=True, default=False,
help="Measure test coverage. Specify 'html' or "
"'xml' to get reports.")
argparser.add_argument('--subproc-streams', default='capture',
help="What to do with stdout/stderr from subprocesses. "
"'capture' (default), 'show' and 'discard' are the options.")
def default_options():
"""Get an argparse Namespace object with the default arguments, to pass to
:func:`run_iptestall`.
"""
options = argparser.parse_args([])
options.extra_args = []
return options
def main():
# Arguments after -- should be passed through to nose. Argparse treats
# everything after -- as regular positional arguments, so we separate them
# first.
try:
ix = sys.argv.index('--')
except ValueError:
to_parse = sys.argv[1:]
extra_args = []
else:
to_parse = sys.argv[1:ix]
extra_args = sys.argv[ix+1:]
options = argparser.parse_args(to_parse)
options.extra_args = extra_args
run_iptestall(options)
if __name__ == '__main__':
main()