Pillow/Tests/test_image_histogram.py

from .helper import PillowTestCase, hopper


class TestImageHistogram(PillowTestCase):

    def test_histogram(self):

        def histogram(mode):
            h = hopper(mode).histogram()
            return len(h), min(h), max(h)

        self.assertEqual(histogram("1"), (256, 0, 10994))
        self.assertEqual(histogram("L"), (256, 0, 638))
        self.assertEqual(histogram("I"), (256, 1, 662))
        self.assertEqual(histogram("F"), (256, 0, 638))
        self.assertEqual(histogram("P"), (256, 0, 1871))
        self.assertEqual(histogram("RGB"), (768, 4, 675))
        self.assertEqual(histogram("RGBA"), (1024, 0, 16384))
        self.assertEqual(histogram("CMYK"), (1024, 0, 16384))
        self.assertEqual(histogram("YCbCr"), (768, 0, 1908))
Remove unnecessary unittest.main() boilerplate from test files With the introduction and use of pytest, it is simple and easy to execute specific tests in isolation through documented command line arguments. Either by specifying the module path or through the `-k EXPRESSION` argument. There is no longer any need to provide the boilerplate: if __name__ == '__main__': unittest.main() To every test file. It is simply noise. The pattern remains in test files that aren't named with `test_*` as those files are not discovered and executed by pytest by default. 2019-02-03 18:34:53 +03:00			`from .helper import PillowTestCase, hopper`
py3k: Import Christoph Gohlke's test suite This is Christoph Gohlke's test suite from his personal PIL package found at http://www.lfd.uci.edu/~gohlke/pythonlibs/. This is just to bring it in as a separate commit. Future commits will align it with Pillow. 2012-10-16 00:26:38 +04:00

Convert old tests to use unittest 2014-06-10 13:10:47 +04:00			`class TestImageHistogram(PillowTestCase):`
py3k: Import Christoph Gohlke's test suite This is Christoph Gohlke's test suite from his personal PIL package found at http://www.lfd.uci.edu/~gohlke/pythonlibs/. This is just to bring it in as a separate commit. Future commits will align it with Pillow. 2012-10-16 00:26:38 +04:00
Convert old tests to use unittest 2014-06-10 13:10:47 +04:00			`def test_histogram(self):`
py3k: Import Christoph Gohlke's test suite This is Christoph Gohlke's test suite from his personal PIL package found at http://www.lfd.uci.edu/~gohlke/pythonlibs/. This is just to bring it in as a separate commit. Future commits will align it with Pillow. 2012-10-16 00:26:38 +04:00
Convert old tests to use unittest 2014-06-10 13:10:47 +04:00			`def histogram(mode):`
Replace some lena() with hopper(), and temporarily disable fail-fast so we can see all failures 2014-09-05 14:03:56 +04:00			`h = hopper(mode).histogram()`
Convert old tests to use unittest 2014-06-10 13:10:47 +04:00			`return len(h), min(h), max(h)`

Fix tests. test_trns_p() needed assert_image_similar() in place of assert_image_equal() 2014-09-14 21:00:13 +04:00			`self.assertEqual(histogram("1"), (256, 0, 10994))`
			`self.assertEqual(histogram("L"), (256, 0, 638))`
Improved I mode conversion 2019-05-08 14:58:33 +03:00			`self.assertEqual(histogram("I"), (256, 1, 662))`
Fix tests. test_trns_p() needed assert_image_similar() in place of assert_image_equal() 2014-09-14 21:00:13 +04:00			`self.assertEqual(histogram("F"), (256, 0, 638))`
			`self.assertEqual(histogram("P"), (256, 0, 1871))`
			`self.assertEqual(histogram("RGB"), (768, 4, 675))`
Convert old tests to use unittest 2014-06-10 13:10:47 +04:00			`self.assertEqual(histogram("RGBA"), (1024, 0, 16384))`
			`self.assertEqual(histogram("CMYK"), (1024, 0, 16384))`
Fix tests. test_trns_p() needed assert_image_similar() in place of assert_image_equal() 2014-09-14 21:00:13 +04:00			`self.assertEqual(histogram("YCbCr"), (768, 0, 1908))`