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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.
66 lines
1.8 KiB
Python
66 lines
1.8 KiB
Python
from .helper import unittest, PillowTestCase
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from PIL import Image, PngImagePlugin, ImageFile
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from io import BytesIO
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import zlib
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TEST_FILE = "Tests/images/png_decompression_dos.png"
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class TestPngDos(PillowTestCase):
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def test_ignore_dos_text(self):
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ImageFile.LOAD_TRUNCATED_IMAGES = True
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try:
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im = Image.open(TEST_FILE)
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im.load()
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finally:
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ImageFile.LOAD_TRUNCATED_IMAGES = False
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for s in im.text.values():
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self.assertLess(len(s), 1024*1024, "Text chunk larger than 1M")
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for s in im.info.values():
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self.assertLess(len(s), 1024*1024, "Text chunk larger than 1M")
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def test_dos_text(self):
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try:
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im = Image.open(TEST_FILE)
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im.load()
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except ValueError as msg:
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self.assertTrue(msg, "Decompressed Data Too Large")
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return
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for s in im.text.values():
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self.assertLess(len(s), 1024*1024, "Text chunk larger than 1M")
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def test_dos_total_memory(self):
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im = Image.new('L', (1, 1))
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compressed_data = zlib.compress(b'a'*1024*1023)
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info = PngImagePlugin.PngInfo()
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for x in range(64):
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info.add_text('t%s' % x, compressed_data, zip=True)
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info.add_itxt('i%s' % x, compressed_data, zip=True)
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b = BytesIO()
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im.save(b, 'PNG', pnginfo=info)
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b.seek(0)
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try:
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im2 = Image.open(b)
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except ValueError as msg:
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self.assertIn("Too much memory", msg)
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return
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total_len = 0
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for txt in im2.text.values():
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total_len += len(txt)
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self.assertLess(total_len, 64*1024*1024,
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"Total text chunks greater than 64M")
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if __name__ == '__main__':
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unittest.main()
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