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123 lines
2.7 KiB
Python
123 lines
2.7 KiB
Python
from .helper import PillowTestCase
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from PIL import GimpGradientFile
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class TestImage(PillowTestCase):
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def test_linear_pos_le_middle(self):
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# Arrange
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middle = 0.5
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pos = 0.25
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# Act
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ret = GimpGradientFile.linear(middle, pos)
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# Assert
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self.assertEqual(ret, 0.25)
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def test_linear_pos_le_small_middle(self):
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# Arrange
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middle = 1e-11
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pos = 1e-12
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# Act
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ret = GimpGradientFile.linear(middle, pos)
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# Assert
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self.assertEqual(ret, 0.0)
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def test_linear_pos_gt_middle(self):
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# Arrange
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middle = 0.5
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pos = 0.75
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# Act
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ret = GimpGradientFile.linear(middle, pos)
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# Assert
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self.assertEqual(ret, 0.75)
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def test_linear_pos_gt_small_middle(self):
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# Arrange
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middle = 1 - 1e-11
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pos = 1 - 1e-12
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# Act
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ret = GimpGradientFile.linear(middle, pos)
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# Assert
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self.assertEqual(ret, 1.0)
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def test_curved(self):
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# Arrange
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middle = 0.5
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pos = 0.75
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# Act
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ret = GimpGradientFile.curved(middle, pos)
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# Assert
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self.assertEqual(ret, 0.75)
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def test_sine(self):
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# Arrange
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middle = 0.5
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pos = 0.75
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# Act
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ret = GimpGradientFile.sine(middle, pos)
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# Assert
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self.assertEqual(ret, 0.8535533905932737)
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def test_sphere_increasing(self):
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# Arrange
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middle = 0.5
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pos = 0.75
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# Act
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ret = GimpGradientFile.sphere_increasing(middle, pos)
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# Assert
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self.assertAlmostEqual(ret, 0.9682458365518543)
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def test_sphere_decreasing(self):
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# Arrange
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middle = 0.5
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pos = 0.75
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# Act
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ret = GimpGradientFile.sphere_decreasing(middle, pos)
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# Assert
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self.assertEqual(ret, 0.3385621722338523)
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def test_load_via_imagepalette(self):
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# Arrange
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from PIL import ImagePalette
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test_file = "Tests/images/gimp_gradient.ggr"
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# Act
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palette = ImagePalette.load(test_file)
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# Assert
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# load returns raw palette information
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self.assertEqual(len(palette[0]), 1024)
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self.assertEqual(palette[1], "RGBA")
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def test_load_1_3_via_imagepalette(self):
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# Arrange
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from PIL import ImagePalette
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# GIMP 1.3 gradient files contain a name field
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test_file = "Tests/images/gimp_gradient_with_name.ggr"
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# Act
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palette = ImagePalette.load(test_file)
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# Assert
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# load returns raw palette information
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self.assertEqual(len(palette[0]), 1024)
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self.assertEqual(palette[1], "RGBA")
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