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68 lines
1.6 KiB
Python
68 lines
1.6 KiB
Python
from helper import unittest, 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_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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lambda: 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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while True:
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n_frames -= 1
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try:
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im.seek(n_frames)
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break
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except EOFError:
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self.assertTrue(im.tell() < n_frames)
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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, lambda: im.seek(frame))
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if __name__ == '__main__':
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unittest.main()
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# End of file
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