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65 lines
2.4 KiB
Python
65 lines
2.4 KiB
Python
from PIL import Image
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from .helper import PillowTestCase, hopper
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class TestImageSplit(PillowTestCase):
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def test_split(self):
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def split(mode):
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layers = hopper(mode).split()
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return [(i.mode, i.size[0], i.size[1]) for i in layers]
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self.assertEqual(split("1"), [("1", 128, 128)])
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self.assertEqual(split("L"), [("L", 128, 128)])
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self.assertEqual(split("I"), [("I", 128, 128)])
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self.assertEqual(split("F"), [("F", 128, 128)])
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self.assertEqual(split("P"), [("P", 128, 128)])
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self.assertEqual(
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split("RGB"), [("L", 128, 128), ("L", 128, 128), ("L", 128, 128)]
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)
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self.assertEqual(
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split("RGBA"),
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[("L", 128, 128), ("L", 128, 128), ("L", 128, 128), ("L", 128, 128)],
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)
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self.assertEqual(
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split("CMYK"),
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[("L", 128, 128), ("L", 128, 128), ("L", 128, 128), ("L", 128, 128)],
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)
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self.assertEqual(
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split("YCbCr"), [("L", 128, 128), ("L", 128, 128), ("L", 128, 128)]
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)
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def test_split_merge(self):
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def split_merge(mode):
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return Image.merge(mode, hopper(mode).split())
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self.assert_image_equal(hopper("1"), split_merge("1"))
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self.assert_image_equal(hopper("L"), split_merge("L"))
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self.assert_image_equal(hopper("I"), split_merge("I"))
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self.assert_image_equal(hopper("F"), split_merge("F"))
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self.assert_image_equal(hopper("P"), split_merge("P"))
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self.assert_image_equal(hopper("RGB"), split_merge("RGB"))
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self.assert_image_equal(hopper("RGBA"), split_merge("RGBA"))
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self.assert_image_equal(hopper("CMYK"), split_merge("CMYK"))
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self.assert_image_equal(hopper("YCbCr"), split_merge("YCbCr"))
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def test_split_open(self):
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codecs = dir(Image.core)
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if "zip_encoder" in codecs:
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test_file = self.tempfile("temp.png")
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else:
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test_file = self.tempfile("temp.pcx")
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def split_open(mode):
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hopper(mode).save(test_file)
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with Image.open(test_file) as im:
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return len(im.split())
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self.assertEqual(split_open("1"), 1)
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self.assertEqual(split_open("L"), 1)
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self.assertEqual(split_open("P"), 1)
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self.assertEqual(split_open("RGB"), 3)
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if "zip_encoder" in codecs:
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self.assertEqual(split_open("RGBA"), 4)
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