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https://github.com/python-pillow/Pillow.git
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4de5477b61
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.
67 lines
1.7 KiB
Python
67 lines
1.7 KiB
Python
from .helper import PillowTestCase, hopper
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from PIL import Image, DcxImagePlugin
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# Created with ImageMagick: convert hopper.ppm hopper.dcx
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TEST_FILE = "Tests/images/hopper.dcx"
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class TestFileDcx(PillowTestCase):
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def test_sanity(self):
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# Arrange
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# Act
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im = Image.open(TEST_FILE)
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# Assert
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self.assertEqual(im.size, (128, 128))
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self.assertIsInstance(im, DcxImagePlugin.DcxImageFile)
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orig = hopper()
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self.assert_image_equal(im, orig)
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def test_unclosed_file(self):
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def open():
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im = Image.open(TEST_FILE)
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im.load()
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self.assert_warning(None, open)
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def test_invalid_file(self):
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with open("Tests/images/flower.jpg", "rb") as fp:
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self.assertRaises(SyntaxError,
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DcxImagePlugin.DcxImageFile, fp)
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def test_tell(self):
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# Arrange
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im = Image.open(TEST_FILE)
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# Act
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frame = im.tell()
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# Assert
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self.assertEqual(frame, 0)
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def test_n_frames(self):
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im = Image.open(TEST_FILE)
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self.assertEqual(im.n_frames, 1)
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self.assertFalse(im.is_animated)
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def test_eoferror(self):
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im = Image.open(TEST_FILE)
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n_frames = im.n_frames
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# Test seeking past the last frame
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self.assertRaises(EOFError, im.seek, n_frames)
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self.assertLess(im.tell(), n_frames)
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# Test that seeking to the last frame does not raise an error
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im.seek(n_frames-1)
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def test_seek_too_far(self):
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# Arrange
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im = Image.open(TEST_FILE)
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frame = 999 # too big on purpose
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# Act / Assert
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self.assertRaises(EOFError, im.seek, frame)
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