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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.
131 lines
3.8 KiB
Python
131 lines
3.8 KiB
Python
from .helper import PillowTestCase, hopper
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from PIL import Image, ImageFile, 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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# Test an unsupported mode
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f = self.tempfile("temp.pcx")
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im = hopper("RGBA")
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self.assertRaises(ValueError, im.save, f)
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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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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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def test_1px_width(self):
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im = Image.new('L', (1, 256))
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px = im.load()
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for y in range(256):
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px[0, y] = y
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self._roundtrip(im)
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def test_large_count(self):
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im = Image.new('L', (256, 1))
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px = im.load()
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for x in range(256):
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px[x, 0] = x // 67 * 67
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self._roundtrip(im)
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def _test_buffer_overflow(self, im, size=1024):
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_last = ImageFile.MAXBLOCK
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ImageFile.MAXBLOCK = size
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try:
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self._roundtrip(im)
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finally:
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ImageFile.MAXBLOCK = _last
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def test_break_in_count_overflow(self):
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im = Image.new('L', (256, 5))
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px = im.load()
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for y in range(4):
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for x in range(256):
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px[x, y] = x % 128
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self._test_buffer_overflow(im)
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def test_break_one_in_loop(self):
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im = Image.new('L', (256, 5))
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px = im.load()
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for y in range(5):
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for x in range(256):
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px[x, y] = x % 128
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self._test_buffer_overflow(im)
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def test_break_many_in_loop(self):
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im = Image.new('L', (256, 5))
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px = im.load()
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for y in range(4):
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for x in range(256):
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px[x, y] = x % 128
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for x in range(8):
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px[x, 4] = 16
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self._test_buffer_overflow(im)
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def test_break_one_at_end(self):
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im = Image.new('L', (256, 5))
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px = im.load()
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for y in range(5):
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for x in range(256):
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px[x, y] = x % 128
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px[0, 3] = 128 + 64
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self._test_buffer_overflow(im)
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def test_break_many_at_end(self):
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im = Image.new('L', (256, 5))
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px = im.load()
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for y in range(5):
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for x in range(256):
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px[x, y] = x % 128
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for x in range(4):
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px[x * 2, 3] = 128 + 64
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px[x + 256 - 4, 3] = 0
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self._test_buffer_overflow(im)
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def test_break_padding(self):
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im = Image.new('L', (257, 5))
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px = im.load()
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for y in range(5):
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for x in range(257):
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px[x, y] = x % 128
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for x in range(5):
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px[x, 3] = 0
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self._test_buffer_overflow(im)
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