Pillow/Tests/test_file_mcidas.py

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import pytest
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from PIL import Image, McIdasImagePlugin
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from .helper import assert_image_equal
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def test_invalid_file():
invalid_file = "Tests/images/flower.jpg"
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with pytest.raises(SyntaxError):
McIdasImagePlugin.McIdasImageFile(invalid_file)
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def test_valid_file():
# Arrange
# https://ghrc.nsstc.nasa.gov/hydro/details/cmx3g8
# https://ghrc.nsstc.nasa.gov/pub/fieldCampaigns/camex3/cmx3g8/browse/
test_file = "Tests/images/cmx3g8_wv_1998.260_0745_mcidas.ara"
saved_file = "Tests/images/cmx3g8_wv_1998.260_0745_mcidas.png"
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# Act
with Image.open(test_file) as im:
im.load()
# Assert
assert im.format == "MCIDAS"
assert im.mode == "I"
assert im.size == (1800, 400)
with Image.open(saved_file) as im2:
assert_image_equal(im, im2)