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https://github.com/python-pillow/Pillow.git
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5c76e7ec17
Co-authored-by: Andrew Murray <3112309+radarhere@users.noreply.github.com> Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
165 lines
4.3 KiB
Python
165 lines
4.3 KiB
Python
from __future__ import annotations
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import pytest
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from PIL import Image
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from .helper import hopper
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@pytest.mark.parametrize(
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"mode, dest_modes",
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(
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("L", ["I", "F", "LA", "RGB", "RGBA", "RGBX", "CMYK", "YCbCr", "HSV"]),
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("I", ["L", "F"]), # Technically I;32 can work for any 4x8bit storage.
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("F", ["I", "L", "LA", "RGB", "RGBA", "RGBX", "CMYK", "YCbCr", "HSV"]),
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("LA", ["L", "F"]),
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("RGB", ["L", "F"]),
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("RGBA", ["L", "F"]),
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("RGBX", ["L", "F"]),
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("CMYK", ["L", "F"]),
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("YCbCr", ["L", "F"]),
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("HSV", ["L", "F"]),
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),
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)
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def test_invalid_array_type(mode: str, dest_modes: list[str]) -> None:
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img = hopper(mode)
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for dest_mode in dest_modes:
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with pytest.raises(ValueError):
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Image.fromarrow(img, dest_mode, img.size)
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def test_invalid_array_size() -> None:
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img = hopper("RGB")
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assert img.size != (10, 10)
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with pytest.raises(ValueError):
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Image.fromarrow(img, "RGB", (10, 10))
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def test_release_schema() -> None:
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# these should not error out, valgrind should be clean
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img = hopper("L")
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schema = img.__arrow_c_schema__()
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del schema
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def test_release_array() -> None:
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# these should not error out, valgrind should be clean
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img = hopper("L")
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array, schema = img.__arrow_c_array__()
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del array
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del schema
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def test_readonly() -> None:
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img = hopper("L")
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reloaded = Image.fromarrow(img, img.mode, img.size)
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assert reloaded.readonly == 1
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reloaded._readonly = 0
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assert reloaded.readonly == 1
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def test_multiblock_l_image() -> None:
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block_size = Image.core.get_block_size()
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# check a 2 block image in single channel mode
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size = (4096, 2 * block_size // 4096)
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img = Image.new("L", size, 128)
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with pytest.raises(ValueError):
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(schema, arr) = img.__arrow_c_array__()
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def test_multiblock_rgba_image() -> None:
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block_size = Image.core.get_block_size()
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# check a 2 block image in 4 channel mode
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size = (4096, (block_size // 4096) // 2)
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img = Image.new("RGBA", size, (128, 127, 126, 125))
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with pytest.raises(ValueError):
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(schema, arr) = img.__arrow_c_array__()
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def test_multiblock_l_schema() -> None:
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block_size = Image.core.get_block_size()
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# check a 2 block image in single channel mode
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size = (4096, 2 * block_size // 4096)
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img = Image.new("L", size, 128)
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with pytest.raises(ValueError):
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img.__arrow_c_schema__()
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def test_multiblock_rgba_schema() -> None:
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block_size = Image.core.get_block_size()
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# check a 2 block image in 4 channel mode
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size = (4096, (block_size // 4096) // 2)
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img = Image.new("RGBA", size, (128, 127, 126, 125))
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with pytest.raises(ValueError):
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img.__arrow_c_schema__()
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def test_singleblock_l_image() -> None:
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Image.core.set_use_block_allocator(1)
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block_size = Image.core.get_block_size()
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# check a 2 block image in 4 channel mode
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size = (4096, 2 * (block_size // 4096))
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img = Image.new("L", size, 128)
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assert img.im.isblock()
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(schema, arr) = img.__arrow_c_array__()
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assert schema
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assert arr
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Image.core.set_use_block_allocator(0)
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def test_singleblock_rgba_image() -> None:
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Image.core.set_use_block_allocator(1)
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block_size = Image.core.get_block_size()
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# check a 2 block image in 4 channel mode
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size = (4096, (block_size // 4096) // 2)
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img = Image.new("RGBA", size, (128, 127, 126, 125))
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assert img.im.isblock()
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(schema, arr) = img.__arrow_c_array__()
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assert schema
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assert arr
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Image.core.set_use_block_allocator(0)
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def test_singleblock_l_schema() -> None:
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Image.core.set_use_block_allocator(1)
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block_size = Image.core.get_block_size()
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# check a 2 block image in single channel mode
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size = (4096, 2 * block_size // 4096)
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img = Image.new("L", size, 128)
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assert img.im.isblock()
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schema = img.__arrow_c_schema__()
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assert schema
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Image.core.set_use_block_allocator(0)
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def test_singleblock_rgba_schema() -> None:
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Image.core.set_use_block_allocator(1)
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block_size = Image.core.get_block_size()
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# check a 2 block image in 4 channel mode
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size = (4096, (block_size // 4096) // 2)
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img = Image.new("RGBA", size, (128, 127, 126, 125))
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assert img.im.isblock()
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schema = img.__arrow_c_schema__()
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assert schema
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Image.core.set_use_block_allocator(0)
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