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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.
125 lines
3.8 KiB
Python
125 lines
3.8 KiB
Python
import io
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from PIL import BmpImagePlugin, Image
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from .helper import PillowTestCase, hopper
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class TestFileBmp(PillowTestCase):
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def roundtrip(self, im):
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outfile = self.tempfile("temp.bmp")
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im.save(outfile, "BMP")
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reloaded = Image.open(outfile)
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reloaded.load()
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self.assertEqual(im.mode, reloaded.mode)
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self.assertEqual(im.size, reloaded.size)
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self.assertEqual(reloaded.format, "BMP")
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self.assertEqual(reloaded.get_format_mimetype(), "image/bmp")
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def test_sanity(self):
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self.roundtrip(hopper())
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self.roundtrip(hopper("1"))
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self.roundtrip(hopper("L"))
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self.roundtrip(hopper("P"))
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self.roundtrip(hopper("RGB"))
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def test_invalid_file(self):
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with open("Tests/images/flower.jpg", "rb") as fp:
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self.assertRaises(SyntaxError, BmpImagePlugin.BmpImageFile, fp)
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def test_save_to_bytes(self):
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output = io.BytesIO()
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im = hopper()
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im.save(output, "BMP")
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output.seek(0)
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reloaded = Image.open(output)
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self.assertEqual(im.mode, reloaded.mode)
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self.assertEqual(im.size, reloaded.size)
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self.assertEqual(reloaded.format, "BMP")
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def test_dpi(self):
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dpi = (72, 72)
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output = io.BytesIO()
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im = hopper()
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im.save(output, "BMP", dpi=dpi)
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output.seek(0)
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reloaded = Image.open(output)
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self.assertEqual(reloaded.info["dpi"], dpi)
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def test_save_bmp_with_dpi(self):
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# Test for #1301
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# Arrange
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outfile = self.tempfile("temp.jpg")
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im = Image.open("Tests/images/hopper.bmp")
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# Act
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im.save(outfile, "JPEG", dpi=im.info["dpi"])
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# Assert
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reloaded = Image.open(outfile)
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reloaded.load()
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self.assertEqual(im.info["dpi"], reloaded.info["dpi"])
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self.assertEqual(im.size, reloaded.size)
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self.assertEqual(reloaded.format, "JPEG")
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def test_load_dpi_rounding(self):
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# Round up
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im = Image.open("Tests/images/hopper.bmp")
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self.assertEqual(im.info["dpi"], (96, 96))
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# Round down
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im = Image.open("Tests/images/hopper_roundDown.bmp")
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self.assertEqual(im.info["dpi"], (72, 72))
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def test_save_dpi_rounding(self):
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outfile = self.tempfile("temp.bmp")
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im = Image.open("Tests/images/hopper.bmp")
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im.save(outfile, dpi=(72.2, 72.2))
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reloaded = Image.open(outfile)
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self.assertEqual(reloaded.info["dpi"], (72, 72))
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im.save(outfile, dpi=(72.8, 72.8))
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reloaded = Image.open(outfile)
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self.assertEqual(reloaded.info["dpi"], (73, 73))
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def test_load_dib(self):
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# test for #1293, Imagegrab returning Unsupported Bitfields Format
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im = Image.open("Tests/images/clipboard.dib")
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self.assertEqual(im.format, "DIB")
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self.assertEqual(im.get_format_mimetype(), "image/bmp")
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target = Image.open("Tests/images/clipboard_target.png")
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self.assert_image_equal(im, target)
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def test_save_dib(self):
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outfile = self.tempfile("temp.dib")
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im = Image.open("Tests/images/clipboard.dib")
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im.save(outfile)
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reloaded = Image.open(outfile)
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self.assertEqual(reloaded.format, "DIB")
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self.assertEqual(reloaded.get_format_mimetype(), "image/bmp")
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self.assert_image_equal(im, reloaded)
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def test_rgba_bitfields(self):
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# This test image has been manually hexedited
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# to change the bitfield compression in the header from XBGR to RGBA
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im = Image.open("Tests/images/rgb32bf-rgba.bmp")
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# So before the comparing the image, swap the channels
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b, g, r = im.split()[1:]
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im = Image.merge("RGB", (r, g, b))
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target = Image.open("Tests/images/bmp/q/rgb32bf-xbgr.bmp")
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self.assert_image_equal(im, target)
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