test_api.py 文件源码

def test_method_lacking(self):
        # There should be no issues if the method is not defined.
        key = 'gobbledeegook'
        sys.path_importer_cache[key] = imp.NullImporter('abc')
        self.addCleanup(lambda: sys.path_importer_cache.__delitem__(key))
        importlib.invalidate_caches()  # Shouldn't trigger an exception.