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https://github.com/python-pillow/Pillow.git
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7da17ad41e
The previous test configuration made it difficult to run a single test with the pytest CLI. There were two major issues: - The Tests directory was not a package. It now includes a __init__.py file and imports from other tests modules are done with relative imports. - setup.cfg always specified the Tests directory. So even if a specific test were specified as a CLI arg, this configuration would also always include all tests. This configuration has been removed to allow specifying a single test on the command line. Contributors can now run specific tests with a single command such as: $ tox -e py37 -- Tests/test_file_pdf.py::TestFilePdf.test_rgb This makes it easy and faster to iterate on a single test failure and is very familiar to those that have previously used tox and pytest. When running tox or pytest with no arguments, they still discover and runs all tests in the Tests directory.
135 lines
3.9 KiB
Python
135 lines
3.9 KiB
Python
from .helper import unittest, 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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if __name__ == '__main__':
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unittest.main()
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