def test_frames_equal_not_frames():
    frame = pd.DataFrame({'a': [1]})
    with pytest.raises(AssertionError) as info:
        testing.assert_frames_equal(frame, 1)

    assert info.value.message == 'Inputs must both be pandas DataFrames.'
dataset/ETHPy150Open UDST/activitysim/activitysim/util/test/test_testing.py/test_frames_equal_not_frames/original