def test_rgb_bgr_roundtrip(self):
"""RGB-to-BGR-to-RGB roundtrip conversion works correctly.
"""
rgb_tuples = [
(0, 0, 0),
(64, 64, 64),
(128, 128, 128),
(255, 255, 255),
(255, 0, 0),
(0, 255, 0),
(0, 0, 255),
(255, 128, 0),
(0, 255, 128),
(128, 0, 255),
]
for rgb in rgb_tuples:
bgr_int = util.rgb_to_bgr_int(rgb)
got_rgb = util.bgr_int_to_rgb(bgr_int)
self.assertEqual(rgb, got_rgb)
def test_rgb_to_bgr_int(self):
"""RGB tuples are correctly converted to BGR integers.
"""
self.assertEqual(util.rgb_to_bgr_int((255, 128, 64)), 4227327)