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57 lines
1.6 KiB
Python
57 lines
1.6 KiB
Python
from __future__ import annotations
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from io import BytesIO
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import pytest
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from PIL import CurImagePlugin, Image
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from PIL._binary import o8
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from PIL._binary import o16le as o16
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from PIL._binary import o32le as o32
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TEST_FILE = "Tests/images/deerstalker.cur"
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def test_sanity() -> None:
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with Image.open(TEST_FILE) as im:
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assert im.size == (32, 32)
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assert isinstance(im, CurImagePlugin.CurImageFile)
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# Check some pixel colors to ensure image is loaded properly
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assert im.getpixel((10, 1)) == (0, 0, 0, 0)
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assert im.getpixel((11, 1)) == (253, 254, 254, 1)
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assert im.getpixel((16, 16)) == (84, 87, 86, 255)
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def test_largest_cursor() -> None:
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magic = b"\x00\x00\x02\x00"
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sizes = ((1, 1), (8, 8), (4, 4))
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data = magic + o16(len(sizes))
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for w, h in sizes:
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image_offset = 6 + len(sizes) * 16 if (w, h) == max(sizes) else 0
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data += o8(w) + o8(h) + o8(0) * 10 + o32(image_offset)
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data += (
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o32(12) # header size
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+ o16(8) # width
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+ o16(16) # height
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+ o16(0) # planes
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+ o16(1) # bits
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)
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with Image.open(BytesIO(data)) as im:
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assert im.size == (8, 8)
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def test_invalid_file() -> None:
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invalid_file = "Tests/images/flower.jpg"
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with pytest.raises(SyntaxError):
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CurImagePlugin.CurImageFile(invalid_file)
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no_cursors_file = "Tests/images/no_cursors.cur"
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cur = CurImagePlugin.CurImageFile(TEST_FILE)
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assert cur.fp is not None
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cur.fp.close()
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with open(no_cursors_file, "rb") as cur.fp:
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with pytest.raises(TypeError):
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cur._open()
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