def test_repr(self):
        assert repr(self.instance) == '<Thread [{0}]>'.format(
            self.instance.subject.get('title'))
Test the error cases for adding a new state to an exploration.
dataset/ETHPy150Open sigmavirus24/github3.py/tests/unit/test_notifications.py/TestThread.test_repr--crossover with--dataset/ETHPy150Open oppia/oppia/core/controllers/editor_test.py/EditorTest.test_add_new_state_error_cases