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Merge pull request #5102 from hugovk/add-path-tests
Add tests for ImagePath.Path
This commit is contained in:
Andrew Murray
GitHub
commit
c52c3ae3e2
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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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@ -6,75 +7,175 @@ import pytest
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from PIL import Image, ImagePath
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class TestImagePath:
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def test_path(self):
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def test_path():
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p = ImagePath.Path(list(range(10)))
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p = ImagePath.Path(list(range(10)))
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# sequence interface
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assert len(p) == 5
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assert p[0] == (0.0, 1.0)
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assert p[-1] == (8.0, 9.0)
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assert list(p[:1]) == [(0.0, 1.0)]
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with pytest.raises(TypeError) as cm:
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p["foo"]
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assert str(cm.value) == "Path indices must be integers, not str"
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assert list(p) == [(0.0, 1.0), (2.0, 3.0), (4.0, 5.0), (6.0, 7.0), (8.0, 9.0)]
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# sequence interface
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assert len(p) == 5
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assert p[0] == (0.0, 1.0)
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assert p[-1] == (8.0, 9.0)
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assert list(p[:1]) == [(0.0, 1.0)]
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with pytest.raises(TypeError) as cm:
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p["foo"]
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assert str(cm.value) == "Path indices must be integers, not str"
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assert list(p) == [(0.0, 1.0), (2.0, 3.0), (4.0, 5.0), (6.0, 7.0), (8.0, 9.0)]
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# method sanity check
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assert p.tolist() == [
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(0.0, 1.0),
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(2.0, 3.0),
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(4.0, 5.0),
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(6.0, 7.0),
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(8.0, 9.0),
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]
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assert p.tolist(1) == [0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0]
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# method sanity check
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assert p.tolist() == [
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(0.0, 1.0),
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(2.0, 3.0),
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(4.0, 5.0),
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(6.0, 7.0),
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(8.0, 9.0),
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]
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assert p.tolist(1) == [0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0]
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assert p.getbbox() == (0.0, 1.0, 8.0, 9.0)
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assert p.getbbox() == (0.0, 1.0, 8.0, 9.0)
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assert p.compact(5) == 2
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assert list(p) == [(0.0, 1.0), (4.0, 5.0), (8.0, 9.0)]
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assert p.compact(5) == 2
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assert list(p) == [(0.0, 1.0), (4.0, 5.0), (8.0, 9.0)]
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p.transform((1, 0, 1, 0, 1, 1))
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assert list(p) == [(1.0, 2.0), (5.0, 6.0), (9.0, 10.0)]
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p.transform((1, 0, 1, 0, 1, 1))
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assert list(p) == [(1.0, 2.0), (5.0, 6.0), (9.0, 10.0)]
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# alternative constructors
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p = ImagePath.Path([0, 1])
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assert list(p) == [(0.0, 1.0)]
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p = ImagePath.Path([0.0, 1.0])
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assert list(p) == [(0.0, 1.0)]
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p = ImagePath.Path([0, 1])
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assert list(p) == [(0.0, 1.0)]
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p = ImagePath.Path([(0, 1)])
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assert list(p) == [(0.0, 1.0)]
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p = ImagePath.Path(p)
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assert list(p) == [(0.0, 1.0)]
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p = ImagePath.Path(p.tolist(0))
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assert list(p) == [(0.0, 1.0)]
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p = ImagePath.Path(p.tolist(1))
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assert list(p) == [(0.0, 1.0)]
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p = ImagePath.Path(array.array("f", [0, 1]))
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assert list(p) == [(0.0, 1.0)]
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# alternative constructors
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p = ImagePath.Path([0, 1])
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assert list(p) == [(0.0, 1.0)]
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p = ImagePath.Path([0.0, 1.0])
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assert list(p) == [(0.0, 1.0)]
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p = ImagePath.Path([0, 1])
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assert list(p) == [(0.0, 1.0)]
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p = ImagePath.Path([(0, 1)])
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assert list(p) == [(0.0, 1.0)]
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p = ImagePath.Path(p)
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assert list(p) == [(0.0, 1.0)]
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p = ImagePath.Path(p.tolist(0))
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assert list(p) == [(0.0, 1.0)]
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p = ImagePath.Path(p.tolist(1))
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assert list(p) == [(0.0, 1.0)]
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p = ImagePath.Path(array.array("f", [0, 1]))
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assert list(p) == [(0.0, 1.0)]
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arr = array.array("f", [0, 1])
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if hasattr(arr, "tobytes"):
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p = ImagePath.Path(arr.tobytes())
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else:
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p = ImagePath.Path(arr.tostring())
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assert list(p) == [(0.0, 1.0)]
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arr = array.array("f", [0, 1])
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if hasattr(arr, "tobytes"):
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p = ImagePath.Path(arr.tobytes())
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else:
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p = ImagePath.Path(arr.tostring())
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assert list(p) == [(0.0, 1.0)]
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def test_overflow_segfault(self):
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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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with pytest.raises((TypeError, MemoryError)):
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# post patch, this fails with a memory error
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x = evil()
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# This fails due to the invalid malloc above,
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# and segfaults
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for i in range(200000):
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x[i] = b"0" * 16
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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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with pytest.raises((TypeError, MemoryError)):
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# post patch, this fails with a memory error
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x = evil()
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# This fails due to the invalid malloc above,
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# and segfaults
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for i in range(200000):
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x[i] = b"0" * 16
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class evil:
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