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https://github.com/python-pillow/Pillow.git
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148 lines
3.9 KiB
Python
148 lines
3.9 KiB
Python
from helper import unittest, PillowTestCase, lena
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from PIL import Image
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class TestImage(PillowTestCase):
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def test_sanity(self):
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im = Image.new("L", (100, 100))
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self.assertEqual(
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repr(im)[:45], "<PIL.Image.Image image mode=L size=100x100 at")
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self.assertEqual(im.mode, "L")
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self.assertEqual(im.size, (100, 100))
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im = Image.new("RGB", (100, 100))
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self.assertEqual(
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repr(im)[:45], "<PIL.Image.Image image mode=RGB size=100x100 ")
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self.assertEqual(im.mode, "RGB")
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self.assertEqual(im.size, (100, 100))
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Image.new("L", (100, 100), None)
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im2 = Image.new("L", (100, 100), 0)
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im3 = Image.new("L", (100, 100), "black")
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self.assertEqual(im2.getcolors(), [(10000, 0)])
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self.assertEqual(im3.getcolors(), [(10000, 0)])
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self.assertRaises(ValueError, lambda: Image.new("X", (100, 100)))
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# self.assertRaises(
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# MemoryError, lambda: Image.new("L", (1000000, 1000000)))
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def test_internals(self):
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im = Image.new("L", (100, 100))
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im.readonly = 1
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im._copy()
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self.assertFalse(im.readonly)
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im.readonly = 1
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im.paste(0, (0, 0, 100, 100))
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self.assertFalse(im.readonly)
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file = self.tempfile("temp.ppm")
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im._dump(file)
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def test_comparison_with_other_type(self):
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# Arrange
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item = Image.new('RGB', (25, 25), '#000')
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num = 12
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# Act/Assert
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# Shouldn't cause AttributeError (#774)
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self.assertFalse(item is None)
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self.assertFalse(item == None)
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self.assertFalse(item == num)
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def test_expand_x(self):
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# Arrange
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im = lena()
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orig_size = im.size
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xmargin = 5
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# Act
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im = im._expand(xmargin)
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# Assert
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self.assertEqual(im.size[0], orig_size[0] + 2*xmargin)
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self.assertEqual(im.size[1], orig_size[1] + 2*xmargin)
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def test_expand_xy(self):
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# Arrange
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im = lena()
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orig_size = im.size
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xmargin = 5
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ymargin = 3
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# Act
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im = im._expand(xmargin, ymargin)
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# Assert
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self.assertEqual(im.size[0], orig_size[0] + 2*xmargin)
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self.assertEqual(im.size[1], orig_size[1] + 2*ymargin)
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def test_getbands(self):
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# Arrange
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im = lena()
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# Act
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bands = im.getbands()
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# Assert
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self.assertEqual(bands, ('R', 'G', 'B'))
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def test_getbbox(self):
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# Arrange
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im = lena()
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# Act
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bbox = im.getbbox()
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# Assert
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self.assertEqual(bbox, (0, 0, 128, 128))
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def test_ne(self):
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# Arrange
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im1 = Image.new('RGB', (25, 25), 'black')
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im2 = Image.new('RGB', (25, 25), 'white')
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# Act / Assert
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self.assertTrue(im1 != im2)
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def test_alpha_composite(self):
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# http://stackoverflow.com/questions/3374878
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# Arrange
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from PIL import ImageDraw
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expected_colors = sorted([
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(1122, (128, 127, 0, 255)),
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(1089, (0, 255, 0, 255)),
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(3300, (255, 0, 0, 255)),
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(1156, (170, 85, 0, 192)),
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(1122, (0, 255, 0, 128)),
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(1122, (255, 0, 0, 128)),
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(1089, (0, 255, 0, 0))])
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dst = Image.new('RGBA', size=(100, 100), color=(0, 255, 0, 255))
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draw = ImageDraw.Draw(dst)
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draw.rectangle((0, 33, 100, 66), fill=(0, 255, 0, 128))
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draw.rectangle((0, 67, 100, 100), fill=(0, 255, 0, 0))
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src = Image.new('RGBA', size=(100, 100), color=(255, 0, 0, 255))
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draw = ImageDraw.Draw(src)
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draw.rectangle((33, 0, 66, 100), fill=(255, 0, 0, 128))
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draw.rectangle((67, 0, 100, 100), fill=(255, 0, 0, 0))
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# Act
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img = Image.alpha_composite(dst, src)
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# Assert
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img_colors = sorted(img.getcolors())
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self.assertEqual(img_colors, expected_colors)
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if __name__ == '__main__':
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unittest.main()
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# End of file
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