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82 lines
2.2 KiB
Python
82 lines
2.2 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 GbrImagePlugin, Image, _binary
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from .helper import assert_image_equal_tofile
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def test_gbr_file() -> None:
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with Image.open("Tests/images/gbr.gbr") as im:
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assert_image_equal_tofile(im, "Tests/images/gbr.png")
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def test_load() -> None:
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with Image.open("Tests/images/gbr.gbr") as im:
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px = im.load()
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assert px is not None
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assert px[0, 0] == (0, 0, 0, 0)
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# Test again now that it has already been loaded once
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px = im.load()
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assert px is not None
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assert px[0, 0] == (0, 0, 0, 0)
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def test_multiple_load_operations() -> None:
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with Image.open("Tests/images/gbr.gbr") as im:
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im.load()
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im.load()
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assert_image_equal_tofile(im, "Tests/images/gbr.png")
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def create_gbr_image(info: dict[str, int] = {}, magic_number=b"") -> BytesIO:
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return BytesIO(
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b"".join(
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_binary.o32be(i)
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for i in [
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info.get("header_size", 20),
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info.get("version", 1),
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info.get("width", 1),
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info.get("height", 1),
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info.get("color_depth", 1),
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]
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)
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+ magic_number
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)
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def test_invalid_file() -> None:
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for f in [
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create_gbr_image({"header_size": 0}),
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create_gbr_image({"width": 0}),
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create_gbr_image({"height": 0}),
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]:
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with pytest.raises(SyntaxError, match="not a GIMP brush"):
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GbrImagePlugin.GbrImageFile(f)
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invalid_file = "Tests/images/flower.jpg"
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with pytest.raises(SyntaxError, match="Unsupported GIMP brush version"):
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GbrImagePlugin.GbrImageFile(invalid_file)
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def test_unsupported_gimp_brush() -> None:
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f = create_gbr_image({"color_depth": 2})
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with pytest.raises(SyntaxError, match="Unsupported GIMP brush color depth: 2"):
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GbrImagePlugin.GbrImageFile(f)
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def test_bad_magic_number() -> None:
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f = create_gbr_image({"version": 2}, magic_number=b"badm")
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with pytest.raises(SyntaxError, match="not a GIMP brush, bad magic number"):
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GbrImagePlugin.GbrImageFile(f)
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def test_L() -> None:
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f = create_gbr_image()
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with Image.open(f) as im:
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assert im.mode == "L"
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