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81 lines
2.1 KiB
Python
81 lines
2.1 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 Image, XpmImagePlugin
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from .helper import assert_image_similar, hopper
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TEST_FILE = "Tests/images/hopper.xpm"
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def test_sanity() -> None:
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with Image.open(TEST_FILE) as im:
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im.load()
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assert im.mode == "P"
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assert im.size == (128, 128)
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assert im.format == "XPM"
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# large error due to quantization->44 colors.
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assert_image_similar(im.convert("RGB"), hopper(), 23)
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def test_bpp2() -> None:
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with Image.open("Tests/images/hopper_bpp2.xpm") as im:
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assert_image_similar(im.convert("RGB"), hopper(), 11)
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def test_rgb() -> None:
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with Image.open("Tests/images/hopper_rgb.xpm") as im:
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assert im.mode == "RGB"
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assert_image_similar(im, hopper(), 16)
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def test_truncated_header() -> None:
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data = b"/* XPM */"
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with pytest.raises(SyntaxError, match="broken XPM file"):
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with XpmImagePlugin.XpmImageFile(BytesIO(data)):
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pass
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def test_cannot_read_color() -> None:
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with open(TEST_FILE, "rb") as fp:
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data = fp.read().split(b"#")[0]
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with pytest.raises(ValueError, match="cannot read this XPM file"):
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with Image.open(BytesIO(data)):
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pass
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with pytest.raises(ValueError, match="cannot read this XPM file"):
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with Image.open(BytesIO(data + b"invalid")):
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pass
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def test_not_enough_image_data() -> None:
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with open(TEST_FILE, "rb") as fp:
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data = fp.read().split(b"/* pixels */")[0]
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with Image.open(BytesIO(data)) as im:
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with pytest.raises(ValueError, match="not enough image data"):
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im.load()
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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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XpmImagePlugin.XpmImageFile(invalid_file)
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def test_load_read() -> None:
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# Arrange
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with Image.open(TEST_FILE) as im:
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assert isinstance(im, XpmImagePlugin.XpmImageFile)
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dummy_bytes = 1
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# Act
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data = im.load_read(dummy_bytes)
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# Assert
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assert len(data) == 16384
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