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58 lines
1.4 KiB
Python
58 lines
1.4 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 FitsImagePlugin, Image
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from .helper import assert_image_equal, assert_image_equal_tofile, hopper
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TEST_FILE = "Tests/images/hopper.fits"
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def test_open() -> None:
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# Act
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with Image.open(TEST_FILE) as im:
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# Assert
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assert im.format == "FITS"
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assert im.size == (128, 128)
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assert im.mode == "L"
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assert_image_equal(im, hopper("L"))
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def test_gzip1() -> None:
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with Image.open("Tests/images/m13_gzip.fits") as im:
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assert_image_equal_tofile(im, "Tests/images/m13.fits")
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def test_invalid_file() -> None:
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# Arrange
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invalid_file = "Tests/images/flower.jpg"
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# Act / Assert
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with pytest.raises(SyntaxError):
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FitsImagePlugin.FitsImageFile(invalid_file)
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def test_truncated_fits() -> None:
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# No END to headers
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image_data = b"SIMPLE = T" + b" " * 50 + b"TRUNCATE"
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with pytest.raises(OSError):
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FitsImagePlugin.FitsImageFile(BytesIO(image_data))
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def test_naxis_zero() -> None:
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# This test image has been manually hexedited
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# to set the number of data axes to zero
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with pytest.raises(ValueError):
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with Image.open("Tests/images/hopper_naxis_zero.fits"):
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pass
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def test_comment() -> None:
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image_data = b"SIMPLE = T / comment string"
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with pytest.raises(OSError):
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FitsImagePlugin.FitsImageFile(BytesIO(image_data))
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