Method _error_message

Lib/unittest/mock.py:2386–2388

()

            raise AssertionError(f'Expected await: {expected}\nNot awaited')

        def _error_message():
            msg = self._format_mock_failure_message(args, kwargs, action='await')
            return msg

        expected = self._call_matcher(_Call((args, kwargs), two=True))
        actual = self._call_matcher(self.await_args)