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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.
240 lines
6.7 KiB
Python
240 lines
6.7 KiB
Python
from .helper import unittest, PillowTestCase, hopper, fromstring, tostring
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from io import BytesIO
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from PIL import Image
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from PIL import ImageFile
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from PIL import EpsImagePlugin
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codecs = dir(Image.core)
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# save original block sizes
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MAXBLOCK = ImageFile.MAXBLOCK
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SAFEBLOCK = ImageFile.SAFEBLOCK
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class TestImageFile(PillowTestCase):
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def test_parser(self):
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def roundtrip(format):
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im = hopper("L").resize((1000, 1000))
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if format in ("MSP", "XBM"):
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im = im.convert("1")
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test_file = BytesIO()
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im.copy().save(test_file, format)
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data = test_file.getvalue()
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parser = ImageFile.Parser()
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parser.feed(data)
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imOut = parser.close()
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return im, imOut
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self.assert_image_equal(*roundtrip("BMP"))
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im1, im2 = roundtrip("GIF")
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self.assert_image_similar(im1.convert('P'), im2, 1)
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self.assert_image_equal(*roundtrip("IM"))
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self.assert_image_equal(*roundtrip("MSP"))
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if "zip_encoder" in codecs:
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try:
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# force multiple blocks in PNG driver
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ImageFile.MAXBLOCK = 8192
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self.assert_image_equal(*roundtrip("PNG"))
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finally:
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ImageFile.MAXBLOCK = MAXBLOCK
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self.assert_image_equal(*roundtrip("PPM"))
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self.assert_image_equal(*roundtrip("TIFF"))
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self.assert_image_equal(*roundtrip("XBM"))
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self.assert_image_equal(*roundtrip("TGA"))
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self.assert_image_equal(*roundtrip("PCX"))
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if EpsImagePlugin.has_ghostscript():
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im1, im2 = roundtrip("EPS")
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# This test fails on Ubuntu 12.04, PPC (Bigendian) It
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# appears to be a ghostscript 9.05 bug, since the
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# ghostscript rendering is wonky and the file is identical
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# to that written on ubuntu 12.04 x64
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# md5sum: ba974835ff2d6f3f2fd0053a23521d4a
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# EPS comes back in RGB:
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self.assert_image_similar(im1, im2.convert('L'), 20)
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if "jpeg_encoder" in codecs:
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im1, im2 = roundtrip("JPEG") # lossy compression
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self.assert_image(im1, im2.mode, im2.size)
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self.assertRaises(IOError, roundtrip, "PDF")
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def test_ico(self):
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with open('Tests/images/python.ico', 'rb') as f:
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data = f.read()
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with ImageFile.Parser() as p:
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p.feed(data)
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self.assertEqual((48, 48), p.image.size)
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def test_safeblock(self):
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if "zip_encoder" not in codecs:
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self.skipTest("PNG (zlib) encoder not available")
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im1 = hopper()
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try:
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ImageFile.SAFEBLOCK = 1
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im2 = fromstring(tostring(im1, "PNG"))
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finally:
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ImageFile.SAFEBLOCK = SAFEBLOCK
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self.assert_image_equal(im1, im2)
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def test_raise_ioerror(self):
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self.assertRaises(IOError, ImageFile.raise_ioerror, 1)
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def test_raise_typeerror(self):
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with self.assertRaises(TypeError):
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parser = ImageFile.Parser()
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parser.feed(1)
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def test_truncated_with_errors(self):
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if "zip_encoder" not in codecs:
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self.skipTest("PNG (zlib) encoder not available")
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im = Image.open("Tests/images/truncated_image.png")
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with self.assertRaises(IOError):
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im.load()
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def test_truncated_without_errors(self):
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if "zip_encoder" not in codecs:
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self.skipTest("PNG (zlib) encoder not available")
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im = Image.open("Tests/images/truncated_image.png")
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ImageFile.LOAD_TRUNCATED_IMAGES = True
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try:
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im.load()
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finally:
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ImageFile.LOAD_TRUNCATED_IMAGES = False
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def test_broken_datastream_with_errors(self):
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if "zip_encoder" not in codecs:
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self.skipTest("PNG (zlib) encoder not available")
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im = Image.open("Tests/images/broken_data_stream.png")
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with self.assertRaises(IOError):
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im.load()
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def test_broken_datastream_without_errors(self):
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if "zip_encoder" not in codecs:
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self.skipTest("PNG (zlib) encoder not available")
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im = Image.open("Tests/images/broken_data_stream.png")
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ImageFile.LOAD_TRUNCATED_IMAGES = True
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try:
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im.load()
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finally:
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ImageFile.LOAD_TRUNCATED_IMAGES = False
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class MockPyDecoder(ImageFile.PyDecoder):
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def decode(self, buffer):
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# eof
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return -1, 0
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xoff, yoff, xsize, ysize = 10, 20, 100, 100
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class MockImageFile(ImageFile.ImageFile):
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def _open(self):
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self.rawmode = 'RGBA'
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self.mode = 'RGBA'
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self._size = (200, 200)
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self.tile = [("MOCK", (xoff, yoff, xoff+xsize, yoff+ysize), 32, None)]
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class TestPyDecoder(PillowTestCase):
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def get_decoder(self):
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decoder = MockPyDecoder(None)
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def closure(mode, *args):
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decoder.__init__(mode, *args)
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return decoder
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Image.register_decoder('MOCK', closure)
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return decoder
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def test_setimage(self):
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buf = BytesIO(b'\x00'*255)
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im = MockImageFile(buf)
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d = self.get_decoder()
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im.load()
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self.assertEqual(d.state.xoff, xoff)
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self.assertEqual(d.state.yoff, yoff)
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self.assertEqual(d.state.xsize, xsize)
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self.assertEqual(d.state.ysize, ysize)
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self.assertRaises(ValueError, d.set_as_raw, b'\x00')
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def test_extents_none(self):
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buf = BytesIO(b'\x00'*255)
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im = MockImageFile(buf)
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im.tile = [("MOCK", None, 32, None)]
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d = self.get_decoder()
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im.load()
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self.assertEqual(d.state.xoff, 0)
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self.assertEqual(d.state.yoff, 0)
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self.assertEqual(d.state.xsize, 200)
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self.assertEqual(d.state.ysize, 200)
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def test_negsize(self):
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buf = BytesIO(b'\x00'*255)
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im = MockImageFile(buf)
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im.tile = [("MOCK", (xoff, yoff, -10, yoff+ysize), 32, None)]
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self.get_decoder()
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self.assertRaises(ValueError, im.load)
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im.tile = [("MOCK", (xoff, yoff, xoff+xsize, -10), 32, None)]
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self.assertRaises(ValueError, im.load)
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def test_oversize(self):
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buf = BytesIO(b'\x00'*255)
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im = MockImageFile(buf)
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im.tile = [
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("MOCK", (xoff, yoff, xoff+xsize + 100, yoff+ysize), 32, None)
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]
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self.get_decoder()
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self.assertRaises(ValueError, im.load)
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im.tile = [
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("MOCK", (xoff, yoff, xoff+xsize, yoff+ysize + 100), 32, None)
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]
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self.assertRaises(ValueError, im.load)
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def test_no_format(self):
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buf = BytesIO(b'\x00'*255)
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im = MockImageFile(buf)
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self.assertIsNone(im.format)
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self.assertIsNone(im.get_format_mimetype())
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if __name__ == '__main__':
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unittest.main()
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