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90 lines
2.9 KiB
Python
90 lines
2.9 KiB
Python
from PIL import Image, SgiImagePlugin
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from .helper import PillowTestCase, assert_image_equal, assert_image_similar, hopper
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class TestFileSgi(PillowTestCase):
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def test_rgb(self):
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# Created with ImageMagick then renamed:
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# convert hopper.ppm -compress None sgi:hopper.rgb
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test_file = "Tests/images/hopper.rgb"
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with Image.open(test_file) as im:
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assert_image_equal(im, hopper())
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self.assertEqual(im.get_format_mimetype(), "image/rgb")
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def test_rgb16(self):
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test_file = "Tests/images/hopper16.rgb"
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with Image.open(test_file) as im:
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assert_image_equal(im, hopper())
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def test_l(self):
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# Created with ImageMagick
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# convert hopper.ppm -monochrome -compress None sgi:hopper.bw
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test_file = "Tests/images/hopper.bw"
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with Image.open(test_file) as im:
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assert_image_similar(im, hopper("L"), 2)
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self.assertEqual(im.get_format_mimetype(), "image/sgi")
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def test_rgba(self):
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# Created with ImageMagick:
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# convert transparent.png -compress None transparent.sgi
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test_file = "Tests/images/transparent.sgi"
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with Image.open(test_file) as im:
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with Image.open("Tests/images/transparent.png") as target:
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assert_image_equal(im, target)
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self.assertEqual(im.get_format_mimetype(), "image/sgi")
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def test_rle(self):
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# Created with ImageMagick:
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# convert hopper.ppm hopper.sgi
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test_file = "Tests/images/hopper.sgi"
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with Image.open(test_file) as im:
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with Image.open("Tests/images/hopper.rgb") as target:
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assert_image_equal(im, target)
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def test_rle16(self):
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test_file = "Tests/images/tv16.sgi"
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with Image.open(test_file) as im:
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with Image.open("Tests/images/tv.rgb") as target:
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assert_image_equal(im, target)
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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(ValueError, SgiImagePlugin.SgiImageFile, invalid_file)
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def test_write(self):
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def roundtrip(img):
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out = self.tempfile("temp.sgi")
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img.save(out, format="sgi")
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with Image.open(out) as reloaded:
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assert_image_equal(img, reloaded)
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for mode in ("L", "RGB", "RGBA"):
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roundtrip(hopper(mode))
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# Test 1 dimension for an L mode image
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roundtrip(Image.new("L", (10, 1)))
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def test_write16(self):
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test_file = "Tests/images/hopper16.rgb"
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with Image.open(test_file) as im:
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out = self.tempfile("temp.sgi")
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im.save(out, format="sgi", bpc=2)
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with Image.open(out) as reloaded:
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assert_image_equal(im, reloaded)
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def test_unsupported_mode(self):
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im = hopper("LA")
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out = self.tempfile("temp.sgi")
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self.assertRaises(ValueError, im.save, out, format="sgi")
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