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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.
217 lines
6.6 KiB
Python
217 lines
6.6 KiB
Python
from .helper import unittest, PillowTestCase
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from PIL import Image, Jpeg2KImagePlugin
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from io import BytesIO
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codecs = dir(Image.core)
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test_card = Image.open('Tests/images/test-card.png')
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test_card.load()
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# OpenJPEG 2.0.0 outputs this debugging message sometimes; we should
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# ignore it---it doesn't represent a test failure.
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# 'Not enough memory to handle tile data'
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class TestFileJpeg2k(PillowTestCase):
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def setUp(self):
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if "jpeg2k_encoder" not in codecs or "jpeg2k_decoder" not in codecs:
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self.skipTest('JPEG 2000 support not available')
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def roundtrip(self, im, **options):
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out = BytesIO()
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im.save(out, "JPEG2000", **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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im.load()
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return im
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def test_sanity(self):
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# Internal version number
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self.assertRegex(Image.core.jp2klib_version, r'\d+\.\d+\.\d+$')
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im = Image.open('Tests/images/test-card-lossless.jp2')
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px = im.load()
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self.assertEqual(px[0, 0], (0, 0, 0))
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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, 'JPEG2000')
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self.assertEqual(im.get_format_mimetype(), 'image/jp2')
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def test_jpf(self):
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im = Image.open('Tests/images/balloon.jpf')
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self.assertEqual(im.format, 'JPEG2000')
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self.assertEqual(im.get_format_mimetype(), 'image/jpx')
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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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Jpeg2KImagePlugin.Jpeg2KImageFile, invalid_file)
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def test_bytesio(self):
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with open('Tests/images/test-card-lossless.jp2', 'rb') as f:
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data = BytesIO(f.read())
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im = Image.open(data)
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im.load()
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self.assert_image_similar(im, test_card, 1.0e-3)
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# These two test pre-written JPEG 2000 files that were not written with
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# PIL (they were made using Adobe Photoshop)
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def test_lossless(self):
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im = Image.open('Tests/images/test-card-lossless.jp2')
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im.load()
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outfile = self.tempfile('temp_test-card.png')
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im.save(outfile)
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self.assert_image_similar(im, test_card, 1.0e-3)
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def test_lossy_tiled(self):
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im = Image.open('Tests/images/test-card-lossy-tiled.jp2')
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im.load()
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self.assert_image_similar(im, test_card, 2.0)
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def test_lossless_rt(self):
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im = self.roundtrip(test_card)
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self.assert_image_equal(im, test_card)
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def test_lossy_rt(self):
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im = self.roundtrip(test_card, quality_layers=[20])
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self.assert_image_similar(im, test_card, 2.0)
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def test_tiled_rt(self):
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im = self.roundtrip(test_card, tile_size=(128, 128))
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self.assert_image_equal(im, test_card)
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def test_tiled_offset_rt(self):
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im = self.roundtrip(
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test_card, tile_size=(128, 128),
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tile_offset=(0, 0), offset=(32, 32))
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self.assert_image_equal(im, test_card)
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def test_irreversible_rt(self):
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im = self.roundtrip(test_card, irreversible=True, quality_layers=[20])
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self.assert_image_similar(im, test_card, 2.0)
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def test_prog_qual_rt(self):
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im = self.roundtrip(
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test_card, quality_layers=[60, 40, 20], progression='LRCP')
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self.assert_image_similar(im, test_card, 2.0)
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def test_prog_res_rt(self):
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im = self.roundtrip(test_card, num_resolutions=8, progression='RLCP')
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self.assert_image_equal(im, test_card)
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def test_reduce(self):
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im = Image.open('Tests/images/test-card-lossless.jp2')
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im.reduce = 2
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im.load()
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self.assertEqual(im.size, (160, 120))
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def test_layers_type(self):
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outfile = self.tempfile('temp_layers.jp2')
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for quality_layers in [
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[100, 50, 10],
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(100, 50, 10),
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None
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]:
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test_card.save(outfile, quality_layers=quality_layers)
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for quality_layers in [
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'quality_layers',
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('100', '50', '10')
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]:
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self.assertRaises(ValueError, test_card.save, outfile,
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quality_layers=quality_layers)
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def test_layers(self):
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out = BytesIO()
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test_card.save(out, 'JPEG2000', quality_layers=[100, 50, 10],
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progression='LRCP')
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out.seek(0)
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im = Image.open(out)
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im.layers = 1
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im.load()
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self.assert_image_similar(im, test_card, 13)
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out.seek(0)
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im = Image.open(out)
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im.layers = 3
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im.load()
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self.assert_image_similar(im, test_card, 0.4)
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def test_rgba(self):
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# Arrange
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j2k = Image.open('Tests/images/rgb_trns_ycbc.j2k')
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jp2 = Image.open('Tests/images/rgb_trns_ycbc.jp2')
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# Act
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j2k.load()
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jp2.load()
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# Assert
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self.assertEqual(j2k.mode, 'RGBA')
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self.assertEqual(jp2.mode, 'RGBA')
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def test_16bit_monochrome_has_correct_mode(self):
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j2k = Image.open('Tests/images/16bit.cropped.j2k')
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jp2 = Image.open('Tests/images/16bit.cropped.jp2')
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j2k.load()
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jp2.load()
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self.assertEqual(j2k.mode, 'I;16')
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self.assertEqual(jp2.mode, 'I;16')
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def test_16bit_monochrome_jp2_like_tiff(self):
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tiff_16bit = Image.open('Tests/images/16bit.cropped.tif')
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jp2 = Image.open('Tests/images/16bit.cropped.jp2')
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self.assert_image_similar(jp2, tiff_16bit, 1e-3)
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def test_16bit_monochrome_j2k_like_tiff(self):
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tiff_16bit = Image.open('Tests/images/16bit.cropped.tif')
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j2k = Image.open('Tests/images/16bit.cropped.j2k')
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self.assert_image_similar(j2k, tiff_16bit, 1e-3)
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def test_16bit_j2k_roundtrips(self):
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j2k = Image.open('Tests/images/16bit.cropped.j2k')
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im = self.roundtrip(j2k)
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self.assert_image_equal(im, j2k)
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def test_16bit_jp2_roundtrips(self):
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jp2 = Image.open('Tests/images/16bit.cropped.jp2')
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im = self.roundtrip(jp2)
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self.assert_image_equal(im, jp2)
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def test_unbound_local(self):
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# prepatch, a malformed jp2 file could cause an UnboundLocalError
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# exception.
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with self.assertRaises(IOError):
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Image.open('Tests/images/unbound_variable.jp2')
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def test_parser_feed(self):
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# Arrange
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from PIL import ImageFile
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with open('Tests/images/test-card-lossless.jp2', 'rb') as f:
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data = f.read()
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# Act
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p = ImageFile.Parser()
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p.feed(data)
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# Assert
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self.assertEqual(p.image.size, (640, 480))
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if __name__ == '__main__':
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unittest.main()
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