Update of /cvsroot/python/python/dist/src/Lib/test In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv27450/Lib/test Added Files: test_colorsys.py Log Message: Add a test script for the colorsys module. --- NEW FILE: test_colorsys.py --- import unittest, test.test_support import colorsys def frange(start, stop, step): while start <= stop: yield start start += stop class ColorsysTest(unittest.TestCase): def assertTripleEqual(self, tr1, tr2): self.assertEqual(len(tr1), 3) self.assertEqual(len(tr2), 3) self.assertAlmostEqual(tr1[0], tr2[0]) self.assertAlmostEqual(tr1[1], tr2[1]) self.assertAlmostEqual(tr1[2], tr2[2]) def test_hsv_roundtrip(self): for r in frange(0.0, 1.0, 0.2): for g in frange(0.0, 1.0, 0.2): for b in frange(0.0, 1.0, 0.2): rgb = (r, g, b) self.assertTripleEqual( rgb, colorsys.hsv_to_rgb(*colorsys.rgb_to_hsv(*rgb)) ) def test_hsv_values(self): values = [ # rgb, hsv ((0.0, 0.0, 0.0), ( 0 , 0.0, 0.0)), # black ((0.0, 0.0, 1.0), (4./6., 1.0, 1.0)), # blue ((0.0, 1.0, 0.0), (2./6., 1.0, 1.0)), # green ((0.0, 1.0, 1.0), (3./6., 1.0, 1.0)), # cyan ((1.0, 0.0, 0.0), ( 0 , 1.0, 1.0)), # red ((1.0, 0.0, 1.0), (5./6., 1.0, 1.0)), # purple ((1.0, 1.0, 0.0), (1./6., 1.0, 1.0)), # yellow ((1.0, 1.0, 1.0), ( 0 , 0.0, 1.0)), # white ((0.5, 0.5, 0.5), ( 0 , 0.0, 0.5)), # grey ] for (rgb, hsv) in values: self.assertTripleEqual(hsv, colorsys.rgb_to_hsv(*rgb)) self.assertTripleEqual(rgb, colorsys.hsv_to_rgb(*hsv)) def test_hls_roundtrip(self): for r in frange(0.0, 1.0, 0.2): for g in frange(0.0, 1.0, 0.2): for b in frange(0.0, 1.0, 0.2): rgb = (r, g, b) self.assertTripleEqual( rgb, colorsys.hls_to_rgb(*colorsys.rgb_to_hls(*rgb)) ) def test_hls_values(self): values = [ # rgb, hls ((0.0, 0.0, 0.0), ( 0 , 0.0, 0.0)), # black ((0.0, 0.0, 1.0), (4./6., 0.5, 1.0)), # blue ((0.0, 1.0, 0.0), (2./6., 0.5, 1.0)), # green ((0.0, 1.0, 1.0), (3./6., 0.5, 1.0)), # cyan ((1.0, 0.0, 0.0), ( 0 , 0.5, 1.0)), # red ((1.0, 0.0, 1.0), (5./6., 0.5, 1.0)), # purple ((1.0, 1.0, 0.0), (1./6., 0.5, 1.0)), # yellow ((1.0, 1.0, 1.0), ( 0 , 1.0, 0.0)), # white ((0.5, 0.5, 0.5), ( 0 , 0.5, 0.0)), # grey ] for (rgb, hls) in values: self.assertTripleEqual(hls, colorsys.rgb_to_hls(*rgb)) self.assertTripleEqual(rgb, colorsys.hls_to_rgb(*hls)) def test_main(): test.test_support.run_unittest(ColorsysTest) if __name__ == "__main__": test_main()