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How to use _prior_tests method in stestr

Best Python code snippet using stestr_python

run.py

Source:run.py

...221                    return 0222                # spurious-failure -> cause.223                test_conflicts = {}224                for spurious_failure in spurious_failures:225                    candidate_causes = self._prior_tests(226                        latest_run, spurious_failure)227                    bottom = 0228                    top = len(candidate_causes)229                    width = top - bottom230                    while width:231                        check_width = int(ceil(width / 2.0))232                        cmd = testcommand.get_run_command(233                            candidate_causes[bottom:bottom + check_width]234                            + [spurious_failure],235                            self.ui.arguments['testargs'])236                        self._run_tests(cmd)237                        # check that the test we're probing still failed - still238                        # awkward.239                        found_fail = []240                        def find_fail(test_dict):241                            if test_dict['id'] == spurious_failure:242                                found_fail.append(True)243                        checker = testtools.StreamToDict(find_fail)244                        checker.startTestRun()245                        try:246                            repo.get_failing().get_test().run(checker)247                        finally:248                            checker.stopTestRun()249                        if found_fail:250                            # Our conflict is in bottom - clamp the range down.251                            top = bottom + check_width252                            if width == 1:253                                # found the cause254                                test_conflicts[255                                    spurious_failure] = candidate_causes[bottom]256                                width = 0257                            else:258                                width = top - bottom259                        else:260                            # Conflict in the range we did not run: discard bottom.261                            bottom = bottom + check_width262                            if width == 1:263                                # there will be no more to check, so we didn't264                                # reproduce the failure.265                                width = 0266                            else:267                                width = top - bottom268                    if spurious_failure not in test_conflicts:269                        # Could not determine cause270                        test_conflicts[spurious_failure] = 'unknown - no conflicts'271                if test_conflicts:272                    table = [('failing test', 'caused by test')]273                    for failure, causes in test_conflicts.items():274                        table.append((failure, causes))275                    self.ui.output_table(table)276                    return 3277                return 0278        finally:279            testcommand.cleanUp()280    def _prior_tests(self, run, failing_id):281        """Calculate what tests from the test run run ran before test_id.282        Tests that ran in a different worker are not included in the result.283        """284        if not getattr(self, '_worker_to_test', False):285            # TODO: switch to route codes?286            case = run.get_test()287            # Use None if there is no worker-N tag288            # If there are multiple, map them all.289            # (worker-N -> [testid, ...])290            worker_to_test = {}291            # (testid -> [workerN, ...])292            test_to_worker = {}293            def map_test(test_dict):294                tags = test_dict['tags']...

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