def test_flipping()

in test.py [0:0]


def test_flipping():
    image = accimage.Image("chicago.jpg")
    original_image_np = image_to_np(image)

    FLIP_LEFT_RIGHT = 0
    image.transpose(FLIP_LEFT_RIGHT)
    if SAVE_IMAGES:
        save_image('test_flipping.jpg', image)

    new_image_np = image_to_np(image)
    assert image.width == 1920
    assert image.height == 931
    np.testing.assert_array_equal(new_image_np[:, ::-1, :], original_image_np)