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d50445ff30
Similar to the recent adoption of Black. isort is a Python utility to sort imports alphabetically and automatically separate into sections. By using isort, contributors can quickly and automatically conform to the projects style without thinking. Just let the tool do it. Uses the configuration recommended by the Black to avoid conflicts of style. Rewrite TestImageQt.test_deprecated to no rely on import order.
130 lines
3.9 KiB
Python
130 lines
3.9 KiB
Python
from PIL import Image, ImageFile, PcxImagePlugin
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from .helper import PillowTestCase, hopper
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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.assertEqual(im2.get_format_mimetype(), "image/x-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, 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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