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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.
175 lines
6.1 KiB
Python
175 lines
6.1 KiB
Python
from io import BytesIO
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from PIL import Image
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from .helper import PillowTestCase
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test_files = ["Tests/images/sugarshack.mpo", "Tests/images/frozenpond.mpo"]
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class TestFileMpo(PillowTestCase):
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def setUp(self):
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codecs = dir(Image.core)
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if "jpeg_encoder" not in codecs or "jpeg_decoder" not in codecs:
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self.skipTest("jpeg support not available")
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def frame_roundtrip(self, im, **options):
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# Note that for now, there is no MPO saving functionality
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out = BytesIO()
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im.save(out, "MPO", **options)
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test_bytes = out.tell()
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out.seek(0)
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im = Image.open(out)
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im.bytes = test_bytes # for testing only
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return im
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def test_sanity(self):
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for test_file in test_files:
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im = Image.open(test_file)
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im.load()
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self.assertEqual(im.mode, "RGB")
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self.assertEqual(im.size, (640, 480))
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self.assertEqual(im.format, "MPO")
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def test_unclosed_file(self):
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def open():
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im = Image.open(test_files[0])
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im.load()
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self.assert_warning(None, open)
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def test_app(self):
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for test_file in test_files:
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# Test APP/COM reader (@PIL135)
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im = Image.open(test_file)
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self.assertEqual(im.applist[0][0], "APP1")
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self.assertEqual(im.applist[1][0], "APP2")
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self.assertEqual(
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im.applist[1][1][:16], b"MPF\x00MM\x00*\x00\x00\x00\x08\x00\x03\xb0\x00"
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)
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self.assertEqual(len(im.applist), 2)
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def test_exif(self):
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for test_file in test_files:
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im = Image.open(test_file)
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info = im._getexif()
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self.assertEqual(info[272], "Nintendo 3DS")
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self.assertEqual(info[296], 2)
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self.assertEqual(info[34665], 188)
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def test_frame_size(self):
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# This image has been hexedited to contain a different size
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# in the EXIF data of the second frame
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im = Image.open("Tests/images/sugarshack_frame_size.mpo")
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self.assertEqual(im.size, (640, 480))
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im.seek(1)
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self.assertEqual(im.size, (680, 480))
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def test_parallax(self):
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# Nintendo
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im = Image.open("Tests/images/sugarshack.mpo")
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exif = im.getexif()
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self.assertEqual(exif.get_ifd(0x927C)[0x1101]["Parallax"], -44.798187255859375)
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# Fujifilm
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im = Image.open("Tests/images/fujifilm.mpo")
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im.seek(1)
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exif = im.getexif()
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self.assertEqual(exif.get_ifd(0x927C)[0xB211], -3.125)
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def test_mp(self):
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for test_file in test_files:
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im = Image.open(test_file)
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mpinfo = im._getmp()
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self.assertEqual(mpinfo[45056], b"0100")
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self.assertEqual(mpinfo[45057], 2)
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def test_mp_offset(self):
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# This image has been manually hexedited to have an IFD offset of 10
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# in APP2 data, in contrast to normal 8
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im = Image.open("Tests/images/sugarshack_ifd_offset.mpo")
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mpinfo = im._getmp()
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self.assertEqual(mpinfo[45056], b"0100")
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self.assertEqual(mpinfo[45057], 2)
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def test_mp_attribute(self):
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for test_file in test_files:
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im = Image.open(test_file)
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mpinfo = im._getmp()
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frameNumber = 0
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for mpentry in mpinfo[45058]:
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mpattr = mpentry["Attribute"]
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if frameNumber:
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self.assertFalse(mpattr["RepresentativeImageFlag"])
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else:
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self.assertTrue(mpattr["RepresentativeImageFlag"])
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self.assertFalse(mpattr["DependentParentImageFlag"])
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self.assertFalse(mpattr["DependentChildImageFlag"])
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self.assertEqual(mpattr["ImageDataFormat"], "JPEG")
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self.assertEqual(mpattr["MPType"], "Multi-Frame Image: (Disparity)")
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self.assertEqual(mpattr["Reserved"], 0)
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frameNumber += 1
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def test_seek(self):
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for test_file in test_files:
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im = Image.open(test_file)
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self.assertEqual(im.tell(), 0)
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# prior to first image raises an error, both blatant and borderline
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self.assertRaises(EOFError, im.seek, -1)
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self.assertRaises(EOFError, im.seek, -523)
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# after the final image raises an error,
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# both blatant and borderline
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self.assertRaises(EOFError, im.seek, 2)
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self.assertRaises(EOFError, im.seek, 523)
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# bad calls shouldn't change the frame
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self.assertEqual(im.tell(), 0)
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# this one will work
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im.seek(1)
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self.assertEqual(im.tell(), 1)
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# and this one, too
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im.seek(0)
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self.assertEqual(im.tell(), 0)
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def test_n_frames(self):
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im = Image.open("Tests/images/sugarshack.mpo")
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self.assertEqual(im.n_frames, 2)
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self.assertTrue(im.is_animated)
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def test_eoferror(self):
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im = Image.open("Tests/images/sugarshack.mpo")
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n_frames = im.n_frames
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# Test seeking past the last frame
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self.assertRaises(EOFError, im.seek, n_frames)
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self.assertLess(im.tell(), n_frames)
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# Test that seeking to the last frame does not raise an error
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im.seek(n_frames - 1)
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def test_image_grab(self):
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for test_file in test_files:
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im = Image.open(test_file)
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self.assertEqual(im.tell(), 0)
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im0 = im.tobytes()
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im.seek(1)
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self.assertEqual(im.tell(), 1)
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im1 = im.tobytes()
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im.seek(0)
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self.assertEqual(im.tell(), 0)
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im02 = im.tobytes()
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self.assertEqual(im0, im02)
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self.assertNotEqual(im0, im1)
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def test_save(self):
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# Note that only individual frames can be saved at present
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for test_file in test_files:
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im = Image.open(test_file)
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self.assertEqual(im.tell(), 0)
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jpg0 = self.frame_roundtrip(im)
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self.assert_image_similar(im, jpg0, 30)
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im.seek(1)
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self.assertEqual(im.tell(), 1)
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jpg1 = self.frame_roundtrip(im)
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self.assert_image_similar(im, jpg1, 30)
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