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122 lines
3.6 KiB
Python
122 lines
3.6 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, lambda: 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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p = ImageFile.Parser()
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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, lambda: ImageFile.raise_ioerror(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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if __name__ == '__main__':
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unittest.main()
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# End of file
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