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7da17ad41e
The previous test configuration made it difficult to run a single test with the pytest CLI. There were two major issues: - The Tests directory was not a package. It now includes a __init__.py file and imports from other tests modules are done with relative imports. - setup.cfg always specified the Tests directory. So even if a specific test were specified as a CLI arg, this configuration would also always include all tests. This configuration has been removed to allow specifying a single test on the command line. Contributors can now run specific tests with a single command such as: $ tox -e py37 -- Tests/test_file_pdf.py::TestFilePdf.test_rgb This makes it easy and faster to iterate on a single test failure and is very familiar to those that have previously used tox and pytest. When running tox or pytest with no arguments, they still discover and runs all tests in the Tests directory.
55 lines
1.7 KiB
Python
55 lines
1.7 KiB
Python
from .helper import unittest, PillowTestCase, hopper
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from PIL import Image
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from PIL import ImageEnhance
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class TestImageEnhance(PillowTestCase):
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def test_sanity(self):
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# FIXME: assert_image
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# Implicit asserts no exception:
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ImageEnhance.Color(hopper()).enhance(0.5)
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ImageEnhance.Contrast(hopper()).enhance(0.5)
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ImageEnhance.Brightness(hopper()).enhance(0.5)
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ImageEnhance.Sharpness(hopper()).enhance(0.5)
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def test_crash(self):
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# crashes on small images
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im = Image.new("RGB", (1, 1))
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ImageEnhance.Sharpness(im).enhance(0.5)
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def _half_transparent_image(self):
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# returns an image, half transparent, half solid
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im = hopper('RGB')
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transparent = Image.new('L', im.size, 0)
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solid = Image.new('L', (im.size[0]//2, im.size[1]), 255)
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transparent.paste(solid, (0, 0))
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im.putalpha(transparent)
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return im
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def _check_alpha(self, im, original, op, amount):
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self.assertEqual(im.getbands(), original.getbands())
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self.assert_image_equal(im.getchannel('A'), original.getchannel('A'),
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"Diff on %s: %s" % (op, amount))
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def test_alpha(self):
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# Issue https://github.com/python-pillow/Pillow/issues/899
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# Is alpha preserved through image enhancement?
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original = self._half_transparent_image()
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for op in ['Color', 'Brightness', 'Contrast', 'Sharpness']:
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for amount in [0, 0.5, 1.0]:
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self._check_alpha(
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getattr(ImageEnhance, op)(original).enhance(amount),
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original, op, amount)
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if __name__ == '__main__':
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unittest.main()
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