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52 lines
1.6 KiB
Python
52 lines
1.6 KiB
Python
from helper import unittest, PillowTestCase, hopper
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from PIL import Image, PcxImagePlugin
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class TestFilePcx(PillowTestCase):
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def _roundtrip(self, im):
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f = self.tempfile("temp.pcx")
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im.save(f)
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im2 = Image.open(f)
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self.assertEqual(im2.mode, im.mode)
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self.assertEqual(im2.size, im.size)
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self.assertEqual(im2.format, "PCX")
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self.assert_image_equal(im2, im)
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def test_sanity(self):
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for mode in ('1', 'L', 'P', 'RGB'):
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self._roundtrip(hopper(mode))
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def test_invalid_file(self):
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invalid_file = "Tests/images/flower.jpg"
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self.assertRaises(SyntaxError,
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lambda: PcxImagePlugin.PcxImageFile(invalid_file))
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def test_odd(self):
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# see issue #523, odd sized images should have a stride that's even.
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# not that imagemagick or gimp write pcx that way.
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# we were not handling properly.
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for mode in ('1', 'L', 'P', 'RGB'):
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# larger, odd sized images are better here to ensure that
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# we handle interrupted scan lines properly.
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self._roundtrip(hopper(mode).resize((511, 511)))
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def test_pil184(self):
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# Check reading of files where xmin/xmax is not zero.
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test_file = "Tests/images/pil184.pcx"
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im = Image.open(test_file)
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self.assertEqual(im.size, (447, 144))
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self.assertEqual(im.tile[0][1], (0, 0, 447, 144))
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# Make sure all pixels are either 0 or 255.
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self.assertEqual(im.histogram()[0] + im.histogram()[255], 447*144)
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if __name__ == '__main__':
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unittest.main()
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