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How to use _find_failing method in stestr

Best Python code snippet using stestr_python

run.py

Source:run.py

...131    args = [StringArgument('testfilters', 0, None), DoubledashArgument(),132        StringArgument('testargs', 0, None)]133    # Can be assigned to to inject a custom command factory.134    command_factory = TestCommand135    def _find_failing(self, repo):136        run = repo.get_failing()137        case = run.get_test()138        ids = []139        def gather_errors(test_dict):140            if test_dict['status'] == 'fail':141                ids.append(test_dict['id'])142        result = testtools.StreamToDict(gather_errors)143        result.startTestRun()144        try:145            case.run(result)146        finally:147            result.stopTestRun()148        return ids149    def run(self):150        repo = self.repository_factory.open(self.ui.here)151        if self.ui.options.failing or self.ui.options.analyze_isolation:152            ids = self._find_failing(repo)153        else:154            ids = None155        if self.ui.options.load_list:156            list_ids = set()157            # Should perhaps be text.. currently does its own decode.158            with open(self.ui.options.load_list, 'rb') as list_file:159                list_ids = set(parse_list(list_file.read()))160            if ids is None:161                # Use the supplied list verbatim162                ids = list_ids163            else:164                # We have some already limited set of ids, just reduce to ids165                # that are both failing and listed.166                ids = list_ids.intersection(ids)...

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