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Add tests for ImagePath.Path
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@ -1,4 +1,5 @@
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import array
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import math
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import struct
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import pytest
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@ -64,6 +65,106 @@ def test_path():
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assert list(p) == [(0.0, 1.0)]
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def test_invalid_coords():
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# Arrange
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coords = ["a", "b"]
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# Act / Assert
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with pytest.raises(SystemError):
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ImagePath.Path(coords)
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def test_path_odd_number_of_coordinates():
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# Arrange
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coords = [0]
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# Act / Assert
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with pytest.raises(ValueError) as e:
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ImagePath.Path(coords)
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assert str(e.value) == "wrong number of coordinates"
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@pytest.mark.parametrize(
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"coords, expected",
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[
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([0, 1, 2, 3], (0.0, 1.0, 2.0, 3.0)),
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([3, 2, 1, 0], (1.0, 0.0, 3.0, 2.0)),
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],
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)
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def test_getbbox(coords, expected):
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# Arrange
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p = ImagePath.Path(coords)
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# Act / Assert
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assert p.getbbox() == expected
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def test_getbbox_no_args():
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# Arrange
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p = ImagePath.Path([0, 1, 2, 3])
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# Act / Assert
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with pytest.raises(TypeError):
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p.getbbox(1)
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@pytest.mark.parametrize(
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"coords, expected",
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[
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(0, []),
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(list(range(6)), [(0.0, 3.0), (4.0, 9.0), (8.0, 15.0)]),
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],
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)
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def test_map(coords, expected):
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# Arrange
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p = ImagePath.Path(coords)
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# Act
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# Modifies the path in-place
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p.map(lambda x, y: (x * 2, y * 3))
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# Assert
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assert list(p) == expected
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def test_transform():
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# Arrange
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p = ImagePath.Path([0, 1, 2, 3])
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theta = math.pi / 15
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# Act
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# Affine transform, in-place
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p.transform(
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(math.cos(theta), math.sin(theta), 20, -math.sin(theta), math.cos(theta), 20),
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)
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# Assert
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assert p.tolist() == [
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(20.20791169081776, 20.978147600733806),
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(22.58003027392089, 22.518619420565898),
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]
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def test_transform_with_wrap():
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# Arrange
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p = ImagePath.Path([0, 1, 2, 3])
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theta = math.pi / 15
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# Act
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# Affine transform, in-place, with wrap parameter
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p.transform(
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(math.cos(theta), math.sin(theta), 20, -math.sin(theta), math.cos(theta), 20),
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1.0,
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)
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# Assert
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assert p.tolist() == [
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(0.20791169081775962, 20.978147600733806),
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(0.5800302739208902, 22.518619420565898),
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]
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def test_overflow_segfault():
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# Some Pythons fail getting the argument as an integer, and it falls
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# through to the sequence. Seeing this on 32-bit Windows.
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