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127 lines
2.3 KiB
Python
127 lines
2.3 KiB
Python
from __future__ import annotations
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from PIL import GimpGradientFile, ImagePalette
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def test_linear_pos_le_middle() -> None:
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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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assert ret == 0.25
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def test_linear_pos_le_small_middle() -> None:
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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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assert ret == 0.0
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def test_linear_pos_gt_middle() -> None:
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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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assert ret == 0.75
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def test_linear_pos_gt_small_middle() -> None:
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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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assert ret == 1.0
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def test_curved() -> None:
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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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assert ret == 0.75
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def test_sine() -> None:
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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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assert ret == 0.8535533905932737
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def test_sphere_increasing() -> None:
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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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assert round(abs(ret - 0.9682458365518543), 7) == 0
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def test_sphere_decreasing() -> None:
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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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assert ret == 0.3385621722338523
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def test_load_via_imagepalette() -> None:
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# Arrange
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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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assert len(palette[0]) == 1024
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assert palette[1] == "RGBA"
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def test_load_1_3_via_imagepalette() -> None:
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# Arrange
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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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assert len(palette[0]) == 1024
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assert palette[1] == "RGBA"
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