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86 lines
2.4 KiB
Python
86 lines
2.4 KiB
Python
import sys
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from array import array
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from PIL import Image
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from .helper import PillowTestCase, assert_image_equal, hopper
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class TestImagePutData(PillowTestCase):
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def test_sanity(self):
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im1 = hopper()
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data = list(im1.getdata())
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im2 = Image.new(im1.mode, im1.size, 0)
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im2.putdata(data)
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assert_image_equal(im1, im2)
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# readonly
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im2 = Image.new(im1.mode, im2.size, 0)
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im2.readonly = 1
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im2.putdata(data)
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self.assertFalse(im2.readonly)
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assert_image_equal(im1, im2)
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def test_long_integers(self):
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# see bug-200802-systemerror
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def put(value):
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im = Image.new("RGBA", (1, 1))
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im.putdata([value])
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return im.getpixel((0, 0))
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self.assertEqual(put(0xFFFFFFFF), (255, 255, 255, 255))
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self.assertEqual(put(0xFFFFFFFF), (255, 255, 255, 255))
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self.assertEqual(put(-1), (255, 255, 255, 255))
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self.assertEqual(put(-1), (255, 255, 255, 255))
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if sys.maxsize > 2 ** 32:
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self.assertEqual(put(sys.maxsize), (255, 255, 255, 255))
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else:
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self.assertEqual(put(sys.maxsize), (255, 255, 255, 127))
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def test_pypy_performance(self):
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im = Image.new("L", (256, 256))
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im.putdata(list(range(256)) * 256)
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def test_mode_i(self):
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src = hopper("L")
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data = list(src.getdata())
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im = Image.new("I", src.size, 0)
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im.putdata(data, 2, 256)
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target = [2 * elt + 256 for elt in data]
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self.assertEqual(list(im.getdata()), target)
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def test_mode_F(self):
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src = hopper("L")
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data = list(src.getdata())
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im = Image.new("F", src.size, 0)
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im.putdata(data, 2.0, 256.0)
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target = [2.0 * float(elt) + 256.0 for elt in data]
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self.assertEqual(list(im.getdata()), target)
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def test_array_B(self):
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# shouldn't segfault
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# see https://github.com/python-pillow/Pillow/issues/1008
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arr = array("B", [0]) * 15000
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im = Image.new("L", (150, 100))
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im.putdata(arr)
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self.assertEqual(len(im.getdata()), len(arr))
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def test_array_F(self):
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# shouldn't segfault
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# see https://github.com/python-pillow/Pillow/issues/1008
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im = Image.new("F", (150, 100))
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arr = array("f", [0.0]) * 15000
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im.putdata(arr)
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self.assertEqual(len(im.getdata()), len(arr))
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