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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.
255 lines
9.1 KiB
Python
255 lines
9.1 KiB
Python
import io
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from PIL import EpsImagePlugin, Image
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from .helper import PillowTestCase, hopper, unittest
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HAS_GHOSTSCRIPT = EpsImagePlugin.has_ghostscript()
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# Our two EPS test files (they are identical except for their bounding boxes)
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file1 = "Tests/images/zero_bb.eps"
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file2 = "Tests/images/non_zero_bb.eps"
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# Due to palletization, we'll need to convert these to RGB after load
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file1_compare = "Tests/images/zero_bb.png"
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file1_compare_scale2 = "Tests/images/zero_bb_scale2.png"
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file2_compare = "Tests/images/non_zero_bb.png"
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file2_compare_scale2 = "Tests/images/non_zero_bb_scale2.png"
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# EPS test files with binary preview
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file3 = "Tests/images/binary_preview_map.eps"
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class TestFileEps(PillowTestCase):
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@unittest.skipUnless(HAS_GHOSTSCRIPT, "Ghostscript not available")
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def test_sanity(self):
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# Regular scale
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image1 = Image.open(file1)
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image1.load()
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self.assertEqual(image1.mode, "RGB")
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self.assertEqual(image1.size, (460, 352))
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self.assertEqual(image1.format, "EPS")
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image2 = Image.open(file2)
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image2.load()
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self.assertEqual(image2.mode, "RGB")
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self.assertEqual(image2.size, (360, 252))
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self.assertEqual(image2.format, "EPS")
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# Double scale
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image1_scale2 = Image.open(file1)
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image1_scale2.load(scale=2)
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self.assertEqual(image1_scale2.mode, "RGB")
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self.assertEqual(image1_scale2.size, (920, 704))
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self.assertEqual(image1_scale2.format, "EPS")
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image2_scale2 = Image.open(file2)
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image2_scale2.load(scale=2)
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self.assertEqual(image2_scale2.mode, "RGB")
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self.assertEqual(image2_scale2.size, (720, 504))
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self.assertEqual(image2_scale2.format, "EPS")
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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, EpsImagePlugin.EpsImageFile, invalid_file)
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@unittest.skipUnless(HAS_GHOSTSCRIPT, "Ghostscript not available")
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def test_cmyk(self):
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cmyk_image = Image.open("Tests/images/pil_sample_cmyk.eps")
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self.assertEqual(cmyk_image.mode, "CMYK")
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self.assertEqual(cmyk_image.size, (100, 100))
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self.assertEqual(cmyk_image.format, "EPS")
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cmyk_image.load()
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self.assertEqual(cmyk_image.mode, "RGB")
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if "jpeg_decoder" in dir(Image.core):
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target = Image.open("Tests/images/pil_sample_rgb.jpg")
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self.assert_image_similar(cmyk_image, target, 10)
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@unittest.skipUnless(HAS_GHOSTSCRIPT, "Ghostscript not available")
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def test_showpage(self):
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# See https://github.com/python-pillow/Pillow/issues/2615
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plot_image = Image.open("Tests/images/reqd_showpage.eps")
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target = Image.open("Tests/images/reqd_showpage.png")
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# should not crash/hang
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plot_image.load()
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# fonts could be slightly different
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self.assert_image_similar(plot_image, target, 6)
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@unittest.skipUnless(HAS_GHOSTSCRIPT, "Ghostscript not available")
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def test_file_object(self):
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# issue 479
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image1 = Image.open(file1)
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with open(self.tempfile("temp_file.eps"), "wb") as fh:
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image1.save(fh, "EPS")
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@unittest.skipUnless(HAS_GHOSTSCRIPT, "Ghostscript not available")
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def test_iobase_object(self):
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# issue 479
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image1 = Image.open(file1)
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with io.open(self.tempfile("temp_iobase.eps"), "wb") as fh:
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image1.save(fh, "EPS")
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@unittest.skipUnless(HAS_GHOSTSCRIPT, "Ghostscript not available")
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def test_bytesio_object(self):
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with open(file1, "rb") as f:
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img_bytes = io.BytesIO(f.read())
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img = Image.open(img_bytes)
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img.load()
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image1_scale1_compare = Image.open(file1_compare).convert("RGB")
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image1_scale1_compare.load()
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self.assert_image_similar(img, image1_scale1_compare, 5)
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def test_image_mode_not_supported(self):
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im = hopper("RGBA")
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tmpfile = self.tempfile("temp.eps")
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self.assertRaises(ValueError, im.save, tmpfile)
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@unittest.skipUnless(HAS_GHOSTSCRIPT, "Ghostscript not available")
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def test_render_scale1(self):
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# We need png support for these render test
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codecs = dir(Image.core)
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if "zip_encoder" not in codecs or "zip_decoder" not in codecs:
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self.skipTest("zip/deflate support not available")
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# Zero bounding box
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image1_scale1 = Image.open(file1)
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image1_scale1.load()
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image1_scale1_compare = Image.open(file1_compare).convert("RGB")
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image1_scale1_compare.load()
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self.assert_image_similar(image1_scale1, image1_scale1_compare, 5)
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# Non-Zero bounding box
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image2_scale1 = Image.open(file2)
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image2_scale1.load()
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image2_scale1_compare = Image.open(file2_compare).convert("RGB")
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image2_scale1_compare.load()
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self.assert_image_similar(image2_scale1, image2_scale1_compare, 10)
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@unittest.skipUnless(HAS_GHOSTSCRIPT, "Ghostscript not available")
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def test_render_scale2(self):
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# We need png support for these render test
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codecs = dir(Image.core)
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if "zip_encoder" not in codecs or "zip_decoder" not in codecs:
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self.skipTest("zip/deflate support not available")
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# Zero bounding box
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image1_scale2 = Image.open(file1)
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image1_scale2.load(scale=2)
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image1_scale2_compare = Image.open(file1_compare_scale2).convert("RGB")
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image1_scale2_compare.load()
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self.assert_image_similar(image1_scale2, image1_scale2_compare, 5)
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# Non-Zero bounding box
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image2_scale2 = Image.open(file2)
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image2_scale2.load(scale=2)
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image2_scale2_compare = Image.open(file2_compare_scale2).convert("RGB")
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image2_scale2_compare.load()
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self.assert_image_similar(image2_scale2, image2_scale2_compare, 10)
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@unittest.skipUnless(HAS_GHOSTSCRIPT, "Ghostscript not available")
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def test_resize(self):
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# Arrange
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image1 = Image.open(file1)
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image2 = Image.open(file2)
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image3 = Image.open("Tests/images/illu10_preview.eps")
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new_size = (100, 100)
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# Act
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image1 = image1.resize(new_size)
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image2 = image2.resize(new_size)
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image3 = image3.resize(new_size)
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# Assert
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self.assertEqual(image1.size, new_size)
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self.assertEqual(image2.size, new_size)
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self.assertEqual(image3.size, new_size)
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@unittest.skipUnless(HAS_GHOSTSCRIPT, "Ghostscript not available")
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def test_thumbnail(self):
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# Issue #619
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# Arrange
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image1 = Image.open(file1)
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image2 = Image.open(file2)
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new_size = (100, 100)
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# Act
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image1.thumbnail(new_size)
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image2.thumbnail(new_size)
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# Assert
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self.assertEqual(max(image1.size), max(new_size))
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self.assertEqual(max(image2.size), max(new_size))
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def test_read_binary_preview(self):
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# Issue 302
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# open image with binary preview
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Image.open(file3)
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def _test_readline(self, t, ending):
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ending = "Failure with line ending: %s" % (
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"".join("%s" % ord(s) for s in ending)
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)
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self.assertEqual(t.readline().strip("\r\n"), "something", ending)
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self.assertEqual(t.readline().strip("\r\n"), "else", ending)
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self.assertEqual(t.readline().strip("\r\n"), "baz", ending)
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self.assertEqual(t.readline().strip("\r\n"), "bif", ending)
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def _test_readline_io_psfile(self, test_string, ending):
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f = io.BytesIO(test_string.encode("latin-1"))
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t = EpsImagePlugin.PSFile(f)
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self._test_readline(t, ending)
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def _test_readline_file_psfile(self, test_string, ending):
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f = self.tempfile("temp.txt")
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with open(f, "wb") as w:
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w.write(test_string.encode("latin-1"))
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with open(f, "rb") as r:
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t = EpsImagePlugin.PSFile(r)
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self._test_readline(t, ending)
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def test_readline(self):
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# check all the freaking line endings possible from the spec
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# test_string = u'something\r\nelse\n\rbaz\rbif\n'
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line_endings = ["\r\n", "\n", "\n\r", "\r"]
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strings = ["something", "else", "baz", "bif"]
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for ending in line_endings:
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s = ending.join(strings)
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self._test_readline_io_psfile(s, ending)
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self._test_readline_file_psfile(s, ending)
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def test_open_eps(self):
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# https://github.com/python-pillow/Pillow/issues/1104
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# Arrange
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FILES = [
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"Tests/images/illu10_no_preview.eps",
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"Tests/images/illu10_preview.eps",
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"Tests/images/illuCS6_no_preview.eps",
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"Tests/images/illuCS6_preview.eps",
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]
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# Act / Assert
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for filename in FILES:
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img = Image.open(filename)
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self.assertEqual(img.mode, "RGB")
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@unittest.skipUnless(HAS_GHOSTSCRIPT, "Ghostscript not available")
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def test_emptyline(self):
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# Test file includes an empty line in the header data
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emptyline_file = "Tests/images/zero_bb_emptyline.eps"
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image = Image.open(emptyline_file)
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image.load()
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self.assertEqual(image.mode, "RGB")
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self.assertEqual(image.size, (460, 352))
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self.assertEqual(image.format, "EPS")
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