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