Pillow/Tests/test_file_xvthumb.py

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from __future__ import annotations
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import pytest
from PIL import Image, XVThumbImagePlugin
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from .helper import assert_image_similar, hopper
TEST_FILE = "Tests/images/hopper.p7"
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def test_open():
# Act
with Image.open(TEST_FILE) as im:
# Assert
assert im.format == "XVThumb"
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# Create a Hopper image with a similar XV palette
im_hopper = hopper().quantize(palette=im)
assert_image_similar(im, im_hopper, 9)
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def test_unexpected_eof():
# Test unexpected EOF reading XV thumbnail file
# Arrange
bad_file = "Tests/images/hopper_bad.p7"
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# Act / Assert
with pytest.raises(SyntaxError):
XVThumbImagePlugin.XVThumbImageFile(bad_file)
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def test_invalid_file():
# Arrange
invalid_file = "Tests/images/flower.jpg"
# Act / Assert
with pytest.raises(SyntaxError):
XVThumbImagePlugin.XVThumbImageFile(invalid_file)