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Merge pull request #6531 from Yay295/parametrize
This commit is contained in:
Hugo van Kemenade
GitHub
commit
7cff8227d0
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@ -5,90 +5,109 @@ from PIL import Image, ImageFilter
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from .helper import assert_image_equal, hopper
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def test_sanity():
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def apply_filter(filter_to_apply):
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for mode in ["L", "RGB", "CMYK"]:
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im = hopper(mode)
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out = im.filter(filter_to_apply)
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assert out.mode == im.mode
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assert out.size == im.size
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@pytest.mark.parametrize(
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"filter_to_apply",
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(
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ImageFilter.BLUR,
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ImageFilter.CONTOUR,
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ImageFilter.DETAIL,
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ImageFilter.EDGE_ENHANCE,
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ImageFilter.EDGE_ENHANCE_MORE,
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ImageFilter.EMBOSS,
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ImageFilter.FIND_EDGES,
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ImageFilter.SMOOTH,
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ImageFilter.SMOOTH_MORE,
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ImageFilter.SHARPEN,
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ImageFilter.MaxFilter,
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ImageFilter.MedianFilter,
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ImageFilter.MinFilter,
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ImageFilter.ModeFilter,
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ImageFilter.GaussianBlur,
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ImageFilter.GaussianBlur(5),
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ImageFilter.BoxBlur(5),
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ImageFilter.UnsharpMask,
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ImageFilter.UnsharpMask(10),
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),
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)
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@pytest.mark.parametrize("mode", ("L", "RGB", "CMYK"))
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def test_sanity(filter_to_apply, mode):
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im = hopper(mode)
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out = im.filter(filter_to_apply)
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assert out.mode == im.mode
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assert out.size == im.size
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apply_filter(ImageFilter.BLUR)
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apply_filter(ImageFilter.CONTOUR)
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apply_filter(ImageFilter.DETAIL)
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apply_filter(ImageFilter.EDGE_ENHANCE)
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apply_filter(ImageFilter.EDGE_ENHANCE_MORE)
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apply_filter(ImageFilter.EMBOSS)
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apply_filter(ImageFilter.FIND_EDGES)
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apply_filter(ImageFilter.SMOOTH)
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apply_filter(ImageFilter.SMOOTH_MORE)
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apply_filter(ImageFilter.SHARPEN)
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apply_filter(ImageFilter.MaxFilter)
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apply_filter(ImageFilter.MedianFilter)
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apply_filter(ImageFilter.MinFilter)
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apply_filter(ImageFilter.ModeFilter)
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apply_filter(ImageFilter.GaussianBlur)
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apply_filter(ImageFilter.GaussianBlur(5))
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apply_filter(ImageFilter.BoxBlur(5))
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apply_filter(ImageFilter.UnsharpMask)
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apply_filter(ImageFilter.UnsharpMask(10))
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@pytest.mark.parametrize("mode", ("L", "RGB", "CMYK"))
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def test_sanity_error(mode):
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with pytest.raises(TypeError):
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apply_filter("hello")
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im = hopper(mode)
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im.filter("hello")
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def test_crash():
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# crashes on small images
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im = Image.new("RGB", (1, 1))
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im.filter(ImageFilter.SMOOTH)
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im = Image.new("RGB", (2, 2))
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im.filter(ImageFilter.SMOOTH)
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im = Image.new("RGB", (3, 3))
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# crashes on small images
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@pytest.mark.parametrize("size", ((1, 1), (2, 2), (3, 3)))
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def test_crash(size):
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im = Image.new("RGB", size)
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im.filter(ImageFilter.SMOOTH)
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def test_modefilter():
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def modefilter(mode):
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im = Image.new(mode, (3, 3), None)
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im.putdata(list(range(9)))
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# image is:
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# 0 1 2
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# 3 4 5
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# 6 7 8
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mod = im.filter(ImageFilter.ModeFilter).getpixel((1, 1))
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im.putdata([0, 0, 1, 2, 5, 1, 5, 2, 0]) # mode=0
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mod2 = im.filter(ImageFilter.ModeFilter).getpixel((1, 1))
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return mod, mod2
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assert modefilter("1") == (4, 0)
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assert modefilter("L") == (4, 0)
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assert modefilter("P") == (4, 0)
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assert modefilter("RGB") == ((4, 0, 0), (0, 0, 0))
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@pytest.mark.parametrize(
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"mode, expected",
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(
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("1", (4, 0)),
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("L", (4, 0)),
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("P", (4, 0)),
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("RGB", ((4, 0, 0), (0, 0, 0))),
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),
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)
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def test_modefilter(mode, expected):
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im = Image.new(mode, (3, 3), None)
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im.putdata(list(range(9)))
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# image is:
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# 0 1 2
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# 3 4 5
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# 6 7 8
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mod = im.filter(ImageFilter.ModeFilter).getpixel((1, 1))
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im.putdata([0, 0, 1, 2, 5, 1, 5, 2, 0]) # mode=0
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mod2 = im.filter(ImageFilter.ModeFilter).getpixel((1, 1))
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assert (mod, mod2) == expected
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def test_rankfilter():
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def rankfilter(mode):
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im = Image.new(mode, (3, 3), None)
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im.putdata(list(range(9)))
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# image is:
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# 0 1 2
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# 3 4 5
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# 6 7 8
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minimum = im.filter(ImageFilter.MinFilter).getpixel((1, 1))
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med = im.filter(ImageFilter.MedianFilter).getpixel((1, 1))
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maximum = im.filter(ImageFilter.MaxFilter).getpixel((1, 1))
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return minimum, med, maximum
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@pytest.mark.parametrize(
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"mode, expected",
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(
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("1", (0, 4, 8)),
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("L", (0, 4, 8)),
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("RGB", ((0, 0, 0), (4, 0, 0), (8, 0, 0))),
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("I", (0, 4, 8)),
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("F", (0.0, 4.0, 8.0)),
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),
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)
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def test_rankfilter(mode, expected):
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im = Image.new(mode, (3, 3), None)
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im.putdata(list(range(9)))
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# image is:
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# 0 1 2
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# 3 4 5
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# 6 7 8
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minimum = im.filter(ImageFilter.MinFilter).getpixel((1, 1))
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med = im.filter(ImageFilter.MedianFilter).getpixel((1, 1))
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maximum = im.filter(ImageFilter.MaxFilter).getpixel((1, 1))
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assert (minimum, med, maximum) == expected
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assert rankfilter("1") == (0, 4, 8)
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assert rankfilter("L") == (0, 4, 8)
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@pytest.mark.parametrize(
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"filter", (ImageFilter.MinFilter, ImageFilter.MedianFilter, ImageFilter.MaxFilter)
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)
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def test_rankfilter_error(filter):
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with pytest.raises(ValueError):
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rankfilter("P")
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assert rankfilter("RGB") == ((0, 0, 0), (4, 0, 0), (8, 0, 0))
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assert rankfilter("I") == (0, 4, 8)
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assert rankfilter("F") == (0.0, 4.0, 8.0)
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im = Image.new("P", (3, 3), None)
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im.putdata(list(range(9)))
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# image is:
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# 0 1 2
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# 3 4 5
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# 6 7 8
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im.filter(filter).getpixel((1, 1))
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def test_rankfilter_properties():
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@ -110,7 +129,8 @@ def test_kernel_not_enough_coefficients():
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ImageFilter.Kernel((3, 3), (0, 0))
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def test_consistency_3x3():
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@pytest.mark.parametrize("mode", ("L", "LA", "RGB", "CMYK"))
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def test_consistency_3x3(mode):
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with Image.open("Tests/images/hopper.bmp") as source:
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with Image.open("Tests/images/hopper_emboss.bmp") as reference:
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kernel = ImageFilter.Kernel(
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@ -125,14 +145,14 @@ def test_consistency_3x3():
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source = source.split() * 2
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reference = reference.split() * 2
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for mode in ["L", "LA", "RGB", "CMYK"]:
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assert_image_equal(
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Image.merge(mode, source[: len(mode)]).filter(kernel),
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Image.merge(mode, reference[: len(mode)]),
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)
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assert_image_equal(
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Image.merge(mode, source[: len(mode)]).filter(kernel),
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Image.merge(mode, reference[: len(mode)]),
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)
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def test_consistency_5x5():
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@pytest.mark.parametrize("mode", ("L", "LA", "RGB", "CMYK"))
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def test_consistency_5x5(mode):
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with Image.open("Tests/images/hopper.bmp") as source:
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with Image.open("Tests/images/hopper_emboss_more.bmp") as reference:
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kernel = ImageFilter.Kernel(
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@ -149,8 +169,7 @@ def test_consistency_5x5():
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source = source.split() * 2
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reference = reference.split() * 2
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for mode in ["L", "LA", "RGB", "CMYK"]:
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assert_image_equal(
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Image.merge(mode, source[: len(mode)]).filter(kernel),
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Image.merge(mode, reference[: len(mode)]),
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)
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assert_image_equal(
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Image.merge(mode, source[: len(mode)]).filter(kernel),
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Image.merge(mode, reference[: len(mode)]),
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)
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@ -38,58 +38,64 @@ gradients_image = Image.open("Tests/images/radial_gradients.png")
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gradients_image.load()
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def test_args_factor():
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@pytest.mark.parametrize(
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"size, expected",
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(
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(3, (4, 4)),
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((3, 1), (4, 10)),
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((1, 3), (10, 4)),
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),
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)
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def test_args_factor(size, expected):
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im = Image.new("L", (10, 10))
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assert (4, 4) == im.reduce(3).size
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assert (4, 10) == im.reduce((3, 1)).size
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assert (10, 4) == im.reduce((1, 3)).size
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with pytest.raises(ValueError):
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im.reduce(0)
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with pytest.raises(TypeError):
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im.reduce(2.0)
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with pytest.raises(ValueError):
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im.reduce((0, 10))
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assert expected == im.reduce(size).size
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def test_args_box():
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@pytest.mark.parametrize(
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"size, expected_error", ((0, ValueError), (2.0, TypeError), ((0, 10), ValueError))
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)
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def test_args_factor_error(size, expected_error):
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im = Image.new("L", (10, 10))
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assert (5, 5) == im.reduce(2, (0, 0, 10, 10)).size
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assert (1, 1) == im.reduce(2, (5, 5, 6, 6)).size
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with pytest.raises(TypeError):
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im.reduce(2, "stri")
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with pytest.raises(TypeError):
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im.reduce(2, 2)
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with pytest.raises(ValueError):
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im.reduce(2, (0, 0, 11, 10))
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with pytest.raises(ValueError):
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im.reduce(2, (0, 0, 10, 11))
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with pytest.raises(ValueError):
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im.reduce(2, (-1, 0, 10, 10))
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with pytest.raises(ValueError):
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im.reduce(2, (0, -1, 10, 10))
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with pytest.raises(ValueError):
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im.reduce(2, (0, 5, 10, 5))
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with pytest.raises(ValueError):
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im.reduce(2, (5, 0, 5, 10))
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with pytest.raises(expected_error):
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im.reduce(size)
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def test_unsupported_modes():
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@pytest.mark.parametrize(
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"size, expected",
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(
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((0, 0, 10, 10), (5, 5)),
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((5, 5, 6, 6), (1, 1)),
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),
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)
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def test_args_box(size, expected):
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im = Image.new("L", (10, 10))
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assert expected == im.reduce(2, size).size
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@pytest.mark.parametrize(
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"size, expected_error",
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(
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("stri", TypeError),
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((0, 0, 11, 10), ValueError),
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((0, 0, 10, 11), ValueError),
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((-1, 0, 10, 10), ValueError),
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((0, -1, 10, 10), ValueError),
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((0, 5, 10, 5), ValueError),
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((5, 0, 5, 10), ValueError),
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),
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)
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def test_args_box_error(size, expected_error):
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im = Image.new("L", (10, 10))
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with pytest.raises(expected_error):
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im.reduce(2, size).size
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@pytest.mark.parametrize("mode", ("P", "1", "I;16"))
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def test_unsupported_modes(mode):
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im = Image.new("P", (10, 10))
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with pytest.raises(ValueError):
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im.reduce(3)
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im = Image.new("1", (10, 10))
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with pytest.raises(ValueError):
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im.reduce(3)
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im = Image.new("I;16", (10, 10))
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with pytest.raises(ValueError):
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im.reduce(3)
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def get_image(mode):
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mode_info = ImageMode.getmode(mode)
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@ -197,63 +203,69 @@ def test_mode_L():
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compare_reduce_with_box(im, factor)
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def test_mode_LA():
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@pytest.mark.parametrize("factor", remarkable_factors)
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def test_mode_LA(factor):
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im = get_image("LA")
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for factor in remarkable_factors:
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compare_reduce_with_reference(im, factor, 0.8, 5)
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compare_reduce_with_reference(im, factor, 0.8, 5)
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@pytest.mark.parametrize("factor", remarkable_factors)
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def test_mode_LA_opaque(factor):
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im = get_image("LA")
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# With opaque alpha, an error should be way smaller.
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im.putalpha(Image.new("L", im.size, 255))
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for factor in remarkable_factors:
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compare_reduce_with_reference(im, factor)
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compare_reduce_with_box(im, factor)
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compare_reduce_with_reference(im, factor)
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compare_reduce_with_box(im, factor)
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def test_mode_La():
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@pytest.mark.parametrize("factor", remarkable_factors)
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def test_mode_La(factor):
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im = get_image("La")
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for factor in remarkable_factors:
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compare_reduce_with_reference(im, factor)
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compare_reduce_with_box(im, factor)
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compare_reduce_with_reference(im, factor)
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compare_reduce_with_box(im, factor)
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def test_mode_RGB():
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@pytest.mark.parametrize("factor", remarkable_factors)
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def test_mode_RGB(factor):
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im = get_image("RGB")
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for factor in remarkable_factors:
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compare_reduce_with_reference(im, factor)
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compare_reduce_with_box(im, factor)
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compare_reduce_with_reference(im, factor)
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compare_reduce_with_box(im, factor)
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def test_mode_RGBA():
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@pytest.mark.parametrize("factor", remarkable_factors)
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def test_mode_RGBA(factor):
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im = get_image("RGBA")
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for factor in remarkable_factors:
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compare_reduce_with_reference(im, factor, 0.8, 5)
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compare_reduce_with_reference(im, factor, 0.8, 5)
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@pytest.mark.parametrize("factor", remarkable_factors)
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def test_mode_RGBA_opaque(factor):
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im = get_image("RGBA")
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# With opaque alpha, an error should be way smaller.
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im.putalpha(Image.new("L", im.size, 255))
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for factor in remarkable_factors:
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compare_reduce_with_reference(im, factor)
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compare_reduce_with_box(im, factor)
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compare_reduce_with_reference(im, factor)
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compare_reduce_with_box(im, factor)
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def test_mode_RGBa():
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@pytest.mark.parametrize("factor", remarkable_factors)
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def test_mode_RGBa(factor):
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im = get_image("RGBa")
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for factor in remarkable_factors:
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compare_reduce_with_reference(im, factor)
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compare_reduce_with_box(im, factor)
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compare_reduce_with_reference(im, factor)
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compare_reduce_with_box(im, factor)
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def test_mode_I():
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@pytest.mark.parametrize("factor", remarkable_factors)
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def test_mode_I(factor):
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im = get_image("I")
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for factor in remarkable_factors:
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compare_reduce_with_reference(im, factor)
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compare_reduce_with_box(im, factor)
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compare_reduce_with_reference(im, factor)
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compare_reduce_with_box(im, factor)
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|
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def test_mode_F():
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@pytest.mark.parametrize("factor", remarkable_factors)
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def test_mode_F(factor):
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im = get_image("F")
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for factor in remarkable_factors:
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compare_reduce_with_reference(im, factor, 0, 0)
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compare_reduce_with_box(im, factor)
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compare_reduce_with_reference(im, factor, 0, 0)
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compare_reduce_with_box(im, factor)
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@skip_unless_feature("jpg_2000")
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|
|
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|
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@ -75,23 +75,25 @@ class TestImageTransform:
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assert_image_equal(transformed, scaled)
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def test_fill(self):
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for mode, pixel in [
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["RGB", (255, 0, 0)],
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["RGBA", (255, 0, 0, 255)],
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["LA", (76, 0)],
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]:
|
||||
im = hopper(mode)
|
||||
(w, h) = im.size
|
||||
transformed = im.transform(
|
||||
im.size,
|
||||
Image.Transform.EXTENT,
|
||||
(0, 0, w * 2, h * 2),
|
||||
Image.Resampling.BILINEAR,
|
||||
fillcolor="red",
|
||||
)
|
||||
|
||||
assert transformed.getpixel((w - 1, h - 1)) == pixel
|
||||
@pytest.mark.parametrize(
|
||||
"mode, expected_pixel",
|
||||
(
|
||||
("RGB", (255, 0, 0)),
|
||||
("RGBA", (255, 0, 0, 255)),
|
||||
("LA", (76, 0)),
|
||||
),
|
||||
)
|
||||
def test_fill(self, mode, expected_pixel):
|
||||
im = hopper(mode)
|
||||
(w, h) = im.size
|
||||
transformed = im.transform(
|
||||
im.size,
|
||||
Image.Transform.EXTENT,
|
||||
(0, 0, w * 2, h * 2),
|
||||
Image.Resampling.BILINEAR,
|
||||
fillcolor="red",
|
||||
)
|
||||
assert transformed.getpixel((w - 1, h - 1)) == expected_pixel
|
||||
|
||||
def test_mesh(self):
|
||||
# this should be a checkerboard of halfsized hoppers in ul, lr
|
||||
|
|
@ -222,14 +224,12 @@ class TestImageTransform:
|
|||
with pytest.raises(ValueError):
|
||||
im.transform((100, 100), None)
|
||||
|
||||
def test_unknown_resampling_filter(self):
|
||||
@pytest.mark.parametrize("resample", (Image.Resampling.BOX, "unknown"))
|
||||
def test_unknown_resampling_filter(self, resample):
|
||||
with hopper() as im:
|
||||
(w, h) = im.size
|
||||
for resample in (Image.Resampling.BOX, "unknown"):
|
||||
with pytest.raises(ValueError):
|
||||
im.transform(
|
||||
(100, 100), Image.Transform.EXTENT, (0, 0, w, h), resample
|
||||
)
|
||||
with pytest.raises(ValueError):
|
||||
im.transform((100, 100), Image.Transform.EXTENT, (0, 0, w, h), resample)
|
||||
|
||||
|
||||
class TestImageTransformAffine:
|
||||
|
|
@ -239,7 +239,16 @@ class TestImageTransformAffine:
|
|||
im = hopper("RGB")
|
||||
return im.crop((10, 20, im.width - 10, im.height - 20))
|
||||
|
||||
def _test_rotate(self, deg, transpose):
|
||||
@pytest.mark.parametrize(
|
||||
"deg, transpose",
|
||||
(
|
||||
(0, None),
|
||||
(90, Image.Transpose.ROTATE_90),
|
||||
(180, Image.Transpose.ROTATE_180),
|
||||
(270, Image.Transpose.ROTATE_270),
|
||||
),
|
||||
)
|
||||
def test_rotate(self, deg, transpose):
|
||||
im = self._test_image()
|
||||
|
||||
angle = -math.radians(deg)
|
||||
|
|
@ -271,77 +280,65 @@ class TestImageTransformAffine:
|
|||
)
|
||||
assert_image_equal(transposed, transformed)
|
||||
|
||||
def test_rotate_0_deg(self):
|
||||
self._test_rotate(0, None)
|
||||
|
||||
def test_rotate_90_deg(self):
|
||||
self._test_rotate(90, Image.Transpose.ROTATE_90)
|
||||
|
||||
def test_rotate_180_deg(self):
|
||||
self._test_rotate(180, Image.Transpose.ROTATE_180)
|
||||
|
||||
def test_rotate_270_deg(self):
|
||||
self._test_rotate(270, Image.Transpose.ROTATE_270)
|
||||
|
||||
def _test_resize(self, scale, epsilonscale):
|
||||
@pytest.mark.parametrize(
|
||||
"scale, epsilon_scale",
|
||||
(
|
||||
(1.1, 6.9),
|
||||
(1.5, 5.5),
|
||||
(2.0, 5.5),
|
||||
(2.3, 3.7),
|
||||
(2.5, 3.7),
|
||||
),
|
||||
)
|
||||
@pytest.mark.parametrize(
|
||||
"resample,epsilon",
|
||||
(
|
||||
(Image.Resampling.NEAREST, 0),
|
||||
(Image.Resampling.BILINEAR, 2),
|
||||
(Image.Resampling.BICUBIC, 1),
|
||||
),
|
||||
)
|
||||
def test_resize(self, scale, epsilon_scale, resample, epsilon):
|
||||
im = self._test_image()
|
||||
|
||||
size_up = int(round(im.width * scale)), int(round(im.height * scale))
|
||||
matrix_up = [1 / scale, 0, 0, 0, 1 / scale, 0, 0, 0]
|
||||
matrix_down = [scale, 0, 0, 0, scale, 0, 0, 0]
|
||||
|
||||
for resample, epsilon in [
|
||||
transformed = im.transform(size_up, self.transform, matrix_up, resample)
|
||||
transformed = transformed.transform(
|
||||
im.size, self.transform, matrix_down, resample
|
||||
)
|
||||
assert_image_similar(transformed, im, epsilon * epsilon_scale)
|
||||
|
||||
@pytest.mark.parametrize(
|
||||
"x, y, epsilon_scale",
|
||||
(
|
||||
(0.1, 0, 3.7),
|
||||
(0.6, 0, 9.1),
|
||||
(50, 50, 0),
|
||||
),
|
||||
)
|
||||
@pytest.mark.parametrize(
|
||||
"resample, epsilon",
|
||||
(
|
||||
(Image.Resampling.NEAREST, 0),
|
||||
(Image.Resampling.BILINEAR, 2),
|
||||
(Image.Resampling.BILINEAR, 1.5),
|
||||
(Image.Resampling.BICUBIC, 1),
|
||||
]:
|
||||
transformed = im.transform(size_up, self.transform, matrix_up, resample)
|
||||
transformed = transformed.transform(
|
||||
im.size, self.transform, matrix_down, resample
|
||||
)
|
||||
assert_image_similar(transformed, im, epsilon * epsilonscale)
|
||||
|
||||
def test_resize_1_1x(self):
|
||||
self._test_resize(1.1, 6.9)
|
||||
|
||||
def test_resize_1_5x(self):
|
||||
self._test_resize(1.5, 5.5)
|
||||
|
||||
def test_resize_2_0x(self):
|
||||
self._test_resize(2.0, 5.5)
|
||||
|
||||
def test_resize_2_3x(self):
|
||||
self._test_resize(2.3, 3.7)
|
||||
|
||||
def test_resize_2_5x(self):
|
||||
self._test_resize(2.5, 3.7)
|
||||
|
||||
def _test_translate(self, x, y, epsilonscale):
|
||||
),
|
||||
)
|
||||
def test_translate(self, x, y, epsilon_scale, resample, epsilon):
|
||||
im = self._test_image()
|
||||
|
||||
size_up = int(round(im.width + x)), int(round(im.height + y))
|
||||
matrix_up = [1, 0, -x, 0, 1, -y, 0, 0]
|
||||
matrix_down = [1, 0, x, 0, 1, y, 0, 0]
|
||||
|
||||
for resample, epsilon in [
|
||||
(Image.Resampling.NEAREST, 0),
|
||||
(Image.Resampling.BILINEAR, 1.5),
|
||||
(Image.Resampling.BICUBIC, 1),
|
||||
]:
|
||||
transformed = im.transform(size_up, self.transform, matrix_up, resample)
|
||||
transformed = transformed.transform(
|
||||
im.size, self.transform, matrix_down, resample
|
||||
)
|
||||
assert_image_similar(transformed, im, epsilon * epsilonscale)
|
||||
|
||||
def test_translate_0_1(self):
|
||||
self._test_translate(0.1, 0, 3.7)
|
||||
|
||||
def test_translate_0_6(self):
|
||||
self._test_translate(0.6, 0, 9.1)
|
||||
|
||||
def test_translate_50(self):
|
||||
self._test_translate(50, 50, 0)
|
||||
transformed = im.transform(size_up, self.transform, matrix_up, resample)
|
||||
transformed = transformed.transform(
|
||||
im.size, self.transform, matrix_down, resample
|
||||
)
|
||||
assert_image_similar(transformed, im, epsilon * epsilon_scale)
|
||||
|
||||
|
||||
class TestImageTransformPerspective(TestImageTransformAffine):
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user