How to use bisect_tests method in stestr

Best Python code snippet using stestr_python

runtests.py

Source:runtests.py

...126        test_runner = TestRunner(verbosity=verbosity, interactive=interactive, failfast=failfast)127        failures = test_runner.run_tests(test_labels, extra_tests=extra_tests)128    teardown(state)129    return failures130def bisect_tests(bisection_label, options, test_labels):131    state = setup(int(options.verbosity), test_labels)132    if not test_labels:133        # Get the full list of test labels to use for bisection134        from django.db.models.loading import get_apps135        test_labels = [app.__name__.split('.')[-2] for app in get_apps()]136    print '***** Bisecting test suite:',' '.join(test_labels)137    # Make sure the bisection point isn't in the test list138    # Also remove tests that need to be run in specific combinations139    for label in [bisection_label, 'model_inheritance_same_model_name']:140        try:141            test_labels.remove(label)142        except ValueError:143            pass144    subprocess_args = [sys.executable, __file__, '--settings=%s' % options.settings]145    if options.failfast:146        subprocess_args.append('--failfast')147    if options.verbosity:148        subprocess_args.append('--verbosity=%s' % options.verbosity)149    if not options.interactive:150        subprocess_args.append('--noinput')151    iteration = 1152    while len(test_labels) > 1:153        midpoint = len(test_labels)/2154        test_labels_a = test_labels[:midpoint] + [bisection_label]155        test_labels_b = test_labels[midpoint:] + [bisection_label]156        print '***** Pass %da: Running the first half of the test suite' % iteration157        print '***** Test labels:',' '.join(test_labels_a)158        failures_a = subprocess.call(subprocess_args + test_labels_a)159        print '***** Pass %db: Running the second half of the test suite' % iteration160        print '***** Test labels:',' '.join(test_labels_b)161        print162        failures_b = subprocess.call(subprocess_args + test_labels_b)163        if failures_a and not failures_b:164            print "***** Problem found in first half. Bisecting again..."165            iteration = iteration + 1166            test_labels = test_labels_a[:-1]167        elif failures_b and not failures_a:168            print "***** Problem found in second half. Bisecting again..."169            iteration = iteration + 1170            test_labels = test_labels_b[:-1]171        elif failures_a and failures_b:172            print "***** Multiple sources of failure found"173            break174        else:175            print "***** No source of failure found... try pair execution (--pair)"176            break177    if len(test_labels) == 1:178        print "***** Source of error:",test_labels[0]179    teardown(state)180def paired_tests(paired_test, options, test_labels):181    state = setup(int(options.verbosity), test_labels)182    if not test_labels:183        print ""184        # Get the full list of test labels to use for bisection185        from django.db.models.loading import get_apps186        test_labels = [app.__name__.split('.')[-2] for app in get_apps()]187    print '***** Trying paired execution'188    # Make sure the constant member of the pair isn't in the test list189    # Also remove tests that need to be run in specific combinations190    for label in [paired_test, 'model_inheritance_same_model_name']:191        try:192            test_labels.remove(label)193        except ValueError:194            pass195    subprocess_args = [sys.executable, __file__, '--settings=%s' % options.settings]196    if options.failfast:197        subprocess_args.append('--failfast')198    if options.verbosity:199        subprocess_args.append('--verbosity=%s' % options.verbosity)200    if not options.interactive:201        subprocess_args.append('--noinput')202    for i, label in enumerate(test_labels):203        print '***** %d of %d: Check test pairing with %s' % (i+1, len(test_labels), label)204        failures = subprocess.call(subprocess_args + [label, paired_test])205        if failures:206            print '***** Found problem pair with',label207            return208    print '***** No problem pair found'209    teardown(state)210if __name__ == "__main__":211    from optparse import OptionParser212    usage = "%prog [options] [module module module ...]"213    parser = OptionParser(usage=usage)214    parser.add_option('-v','--verbosity', action='store', dest='verbosity', default='1',215        type='choice', choices=['0', '1', '2', '3'],216        help='Verbosity level; 0=minimal output, 1=normal output, 2=all output')217    parser.add_option('--noinput', action='store_false', dest='interactive', default=True,218        help='Tells Django to NOT prompt the user for input of any kind.')219    parser.add_option('--failfast', action='store_true', dest='failfast', default=False,220        help='Tells Django to stop running the test suite after first failed test.')221    parser.add_option('--settings',222        help='Python path to settings module, e.g. "myproject.settings". If this isn\'t provided, the DJANGO_SETTINGS_MODULE environment variable will be used.')223    parser.add_option('--bisect', action='store', dest='bisect', default=None,224        help="Bisect the test suite to discover a test that causes a test failure when combined with the named test.")225    parser.add_option('--pair', action='store', dest='pair', default=None,226        help="Run the test suite in pairs with the named test to find problem pairs.")227    options, args = parser.parse_args()228    if options.settings:229        os.environ['DJANGO_SETTINGS_MODULE'] = options.settings230    elif "DJANGO_SETTINGS_MODULE" not in os.environ:231        parser.error("DJANGO_SETTINGS_MODULE is not set in the environment. "232                      "Set it or use --settings.")233    else:234        options.settings = os.environ['DJANGO_SETTINGS_MODULE']235    if options.bisect:236        bisect_tests(options.bisect, options, args)237    elif options.pair:238        paired_tests(options.pair, options, args)239    else:240        failures = django_tests(int(options.verbosity), options.interactive, options.failfast, args)241        if failures:...

test_bisect_tests.py

Source:test_bisect_tests.py

...146            return FakeNoFailing()147        self.repo_mock.get_failing = get_failures148        bisector = bisect_tests.IsolationAnalyzer(149            run, self.conf_mock, self.run_func_mock, self.repo_mock)150        return_code = bisector.bisect_tests(['test_c'])151        expected_issue = [('failing test', 'caused by test'),152                          ('test_c', 'unknown - no conflicts')]153        table_mock.assert_called_once_with(expected_issue)154        self.assertEqual(3, return_code)155    @mock.patch('stestr.output.output_table')156    def test_bisect_tests_not_isolated_failure(self, table_mock):157        run = FakeFailedTestRunWithTags()158        self.conf_mock.get_run_command = mock.MagicMock()159        def get_failures(*args, **kwargs):160            return FakeFailingWithTags()161        self.repo_mock.get_failing = get_failures162        bisector = bisect_tests.IsolationAnalyzer(163            run, self.conf_mock, self.run_func_mock, self.repo_mock)164        return_code = bisector.bisect_tests(['test_c'])165        expected_issue = [('failing test', 'caused by test'),166                          ('test_c', 'test_a')]167        table_mock.assert_called_once_with(expected_issue)168        self.assertEqual(3, return_code)169    @mock.patch('stestr.output.output_table')170    def test_bisect_tests_not_isolated_multiworker_failures(self, table_mock):171        run = FakeFailedMultiWorkerTestRunWithTags()172        self.conf_mock.get_run_command = mock.MagicMock()173        def get_failures(*args, **kwargs):174            return FakeFailingWithTags()175        self.repo_mock.get_failing = get_failures176        bisector = bisect_tests.IsolationAnalyzer(177            run, self.conf_mock, self.run_func_mock, self.repo_mock)178        return_code = bisector.bisect_tests(['test_b', 'test_c'])179        expected_issue = [('failing test', 'caused by test'),180                          ('test_b', 'unknown - no conflicts'),181                          ('test_c', 'test_a')]182        table_mock.assert_called_once_with(expected_issue)...

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