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39 lines
976 B
Python
39 lines
976 B
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 GdImageFile, UnidentifiedImageError
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from .helper import assert_image_similar_tofile
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TEST_GD_FILE = "Tests/images/hopper.gd"
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def test_sanity() -> None:
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with GdImageFile.open(TEST_GD_FILE) as im:
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assert im.size == (128, 128)
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assert im.format == "GD"
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assert_image_similar_tofile(im.convert("RGB"), "Tests/images/hopper.jpg", 14)
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def test_transparency() -> None:
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with open(TEST_GD_FILE, "rb") as fp:
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data = bytearray(fp.read())
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data[7:11] = b"\x00\x00\x00\x05"
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with GdImageFile.open(BytesIO(data)) as im:
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assert im.info["transparency"] == 5
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def test_bad_mode() -> None:
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with pytest.raises(ValueError):
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GdImageFile.open(TEST_GD_FILE, "bad mode")
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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(UnidentifiedImageError):
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GdImageFile.open(invalid_file)
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