python/mach_commands.py
author Csoregi Natalia <ncsoregi@mozilla.com>
Fri, 01 Jun 2018 23:42:00 +0300
changeset 475262 66f87c551f18e83f5b04f34c42d2feddbe4fd88c
parent 474872 317c77708b22d7086f9171ac8893d371c43b79f9
child 476893 7a6d20e982832372a931da68f9b16063901735e2
permissions -rw-r--r--
Backed out 18 changesets (bug 1462784) for ESlint failure on FlameGraph.js:1297. CLOSED TREE Backed out changeset 79556798ff9f (bug 1462784) Backed out changeset 88321efb673b (bug 1462784) Backed out changeset 7880f9dc7023 (bug 1462784) Backed out changeset 71fe35fd1f7e (bug 1462784) Backed out changeset a543b94b049a (bug 1462784) Backed out changeset d1ca8b0f2221 (bug 1462784) Backed out changeset 68eabfbf3c16 (bug 1462784) Backed out changeset 34e71c789903 (bug 1462784) Backed out changeset 6fe79d1ca1bd (bug 1462784) Backed out changeset e5ad2e525ea9 (bug 1462784) Backed out changeset 329645ff1e23 (bug 1462784) Backed out changeset e09c38853172 (bug 1462784) Backed out changeset 0663d1a6d2da (bug 1462784) Backed out changeset 106967fc29d2 (bug 1462784) Backed out changeset 99b4a433a8e5 (bug 1462784) Backed out changeset 1d38a4cf5a4a (bug 1462784) Backed out changeset 692017229de6 (bug 1462784) Backed out changeset c2911a626671 (bug 1462784)

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

from __future__ import absolute_import, print_function, unicode_literals

import argparse
import logging
import os
import sys
import tempfile

from concurrent.futures import (
    ThreadPoolExecutor,
    as_completed,
    thread,
)

import mozinfo
from manifestparser import TestManifest
from manifestparser import filters as mpf

from mozbuild.base import (
    MachCommandBase,
)

from mach.decorators import (
    CommandArgument,
    CommandProvider,
    Command,
)

here = os.path.abspath(os.path.dirname(__file__))


@CommandProvider
class MachCommands(MachCommandBase):
    @Command('python', category='devenv',
             description='Run Python.')
    @CommandArgument('--no-virtualenv', action='store_true',
                     help='Do not set up a virtualenv')
    @CommandArgument('args', nargs=argparse.REMAINDER)
    def python(self, no_virtualenv, args):
        # Avoid logging the command
        self.log_manager.terminal_handler.setLevel(logging.CRITICAL)

        # Note: subprocess requires native strings in os.environ on Windows.
        append_env = {
            b'PYTHONDONTWRITEBYTECODE': str('1'),
        }

        if no_virtualenv:
            python_path = sys.executable
            append_env[b'PYTHONPATH'] = os.pathsep.join(sys.path)
        else:
            self._activate_virtualenv()
            python_path = self.virtualenv_manager.python_path

        return self.run_process([python_path] + args,
                                pass_thru=True,  # Allow user to run Python interactively.
                                ensure_exit_code=False,  # Don't throw on non-zero exit code.
                                append_env=append_env)

    @Command('python-test', category='testing',
             description='Run Python unit tests with an appropriate test runner.')
    @CommandArgument('-v', '--verbose',
                     default=False,
                     action='store_true',
                     help='Verbose output.')
    @CommandArgument('--three',
                     default=False,
                     action='store_true',
                     help='Run tests using Python 3.')
    @CommandArgument('-j', '--jobs',
                     default=1,
                     type=int,
                     help='Number of concurrent jobs to run. Default is 1.')
    @CommandArgument('--subsuite',
                     default=None,
                     help=('Python subsuite to run. If not specified, all subsuites are run. '
                           'Use the string `default` to only run tests without a subsuite.'))
    @CommandArgument('tests', nargs='*',
                     metavar='TEST',
                     help=('Tests to run. Each test can be a single file or a directory. '
                           'Default test resolution relies on PYTHON_UNITTEST_MANIFESTS.'))
    def python_test(self, *args, **kwargs):
        try:
            tempdir = os.environ[b'PYTHON_TEST_TMP'] = str(tempfile.mkdtemp(suffix='-python-test'))
            return self.run_python_tests(*args, **kwargs)
        finally:
            import mozfile
            mozfile.remove(tempdir)

    def run_python_tests(self,
                         tests=None,
                         test_objects=None,
                         subsuite=None,
                         verbose=False,
                         jobs=1,
                         three=False,
                         **kwargs):
        if three:
            # use pipenv to run tests against Python 3
            self.activate_pipenv(os.path.join(here, 'Pipfile'), ['--three'])
        else:
            self._activate_virtualenv()

        if test_objects is None:
            from moztest.resolve import TestResolver
            resolver = self._spawn(TestResolver)
            # If we were given test paths, try to find tests matching them.
            test_objects = resolver.resolve_tests(paths=tests, flavor='python')
        else:
            # We've received test_objects from |mach test|. We need to ignore
            # the subsuite because python-tests don't use this key like other
            # harnesses do and |mach test| doesn't realize this.
            subsuite = None

        mp = TestManifest()
        mp.tests.extend(test_objects)

        filters = []
        if subsuite == 'default':
            filters.append(mpf.subsuite(None))
        elif subsuite:
            filters.append(mpf.subsuite(subsuite))

        tests = mp.active_tests(filters=filters, disabled=False, **mozinfo.info)

        if not tests:
            submsg = "for subsuite '{}' ".format(subsuite) if subsuite else ""
            message = "TEST-UNEXPECTED-FAIL | No tests collected " + \
                      "{}(Not in PYTHON_UNITTEST_MANIFESTS?)".format(submsg)
            self.log(logging.WARN, 'python-test', {}, message)
            return 1

        parallel = []
        sequential = []
        for test in tests:
            if test.get('sequential'):
                sequential.append(test)
            else:
                parallel.append(test)

        self.jobs = jobs
        self.terminate = False
        self.verbose = verbose

        return_code = 0

        def on_test_finished(result):
            output, ret, test_path = result

            for line in output:
                self.log(logging.INFO, 'python-test', {'line': line.rstrip()}, '{line}')

            if ret and not return_code:
                self.log(logging.ERROR, 'python-test', {'test_path': test_path, 'ret': ret},
                         'Setting retcode to {ret} from {test_path}')
            return return_code or ret

        with ThreadPoolExecutor(max_workers=self.jobs) as executor:
            futures = [executor.submit(self._run_python_test, test['path'])
                       for test in parallel]

            try:
                for future in as_completed(futures):
                    return_code = on_test_finished(future.result())
            except KeyboardInterrupt:
                # Hack to force stop currently running threads.
                # https://gist.github.com/clchiou/f2608cbe54403edb0b13
                executor._threads.clear()
                thread._threads_queues.clear()
                raise

        for test in sequential:
            return_code = on_test_finished(self._run_python_test(test['path']))

        self.log(logging.INFO, 'python-test', {'return_code': return_code},
                 'Return code from mach python-test: {return_code}')
        return return_code

    def _run_python_test(self, test_path):
        from mozprocess import ProcessHandler

        output = []

        def _log(line):
            # Buffer messages if more than one worker to avoid interleaving
            if self.jobs > 1:
                output.append(line)
            else:
                self.log(logging.INFO, 'python-test', {'line': line.rstrip()}, '{line}')

        file_displayed_test = []  # used as boolean

        def _line_handler(line):
            if not file_displayed_test:
                output = ('Ran' in line or 'collected' in line or
                          line.startswith('TEST-'))
                if output:
                    file_displayed_test.append(True)

            # Hack to make sure treeherder highlights pytest failures
            if 'FAILED' in line.rsplit(' ', 1)[-1]:
                line = line.replace('FAILED', 'TEST-UNEXPECTED-FAIL')

            _log(line)

        _log(test_path)
        cmd = [self.virtualenv_manager.python_path, test_path]
        env = os.environ.copy()
        env[b'PYTHONDONTWRITEBYTECODE'] = b'1'

        proc = ProcessHandler(cmd, env=env, processOutputLine=_line_handler, storeOutput=False)
        proc.run()

        return_code = proc.wait()

        if not file_displayed_test:
            _log('TEST-UNEXPECTED-FAIL | No test output (missing mozunit.main() '
                 'call?): {}'.format(test_path))

        if self.verbose:
            if return_code != 0:
                _log('Test failed: {}'.format(test_path))
            else:
                _log('Test passed: {}'.format(test_path))

        return output, return_code, test_path