self = <unittest.case._Outcome object at 0x7f27d10a7ef0> test_case = <swh.indexer.tests.test_metadata.Metadata testMethod=test_detect_metadata_package_json> isTest = True @contextlib.contextmanager def testPartExecutor(self, test_case, isTest=False): old_success = self.success self.success = True try: > yield /usr/lib/python3.7/unittest/case.py:59: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ self = <swh.indexer.tests.test_metadata.Metadata testMethod=test_detect_metadata_package_json> result = <TestCaseFunction test_detect_metadata_package_json> def run(self, result=None): orig_result = result if result is None: result = self.defaultTestResult() startTestRun = getattr(result, 'startTestRun', None) if startTestRun is not None: startTestRun() result.startTest(self) testMethod = getattr(self, self._testMethodName) if (getattr(self.__class__, "__unittest_skip__", False) or getattr(testMethod, "__unittest_skip__", False)): # If the class or method was skipped. try: skip_why = (getattr(self.__class__, '__unittest_skip_why__', '') or getattr(testMethod, '__unittest_skip_why__', '')) self._addSkip(result, self, skip_why) finally: result.stopTest(self) return expecting_failure_method = getattr(testMethod, "__unittest_expecting_failure__", False) expecting_failure_class = getattr(self, "__unittest_expecting_failure__", False) expecting_failure = expecting_failure_class or expecting_failure_method outcome = _Outcome(result) try: self._outcome = outcome with outcome.testPartExecutor(self): self.setUp() if outcome.success: outcome.expecting_failure = expecting_failure with outcome.testPartExecutor(self, isTest=True): > testMethod() E TypeError: test_detect_metadata_package_json() missing 1 required positional argument: 'filename' /usr/lib/python3.7/unittest/case.py:615: TypeError