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73 lines
1.8 KiB
Python
73 lines
1.8 KiB
Python
from __future__ import annotations
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import re
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import pytest
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from PIL import Image, JxlImagePlugin, features
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from .helper import (
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assert_image_similar_tofile,
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skip_unless_feature,
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)
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try:
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from PIL import _jxl
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HAVE_JXL = True
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except ImportError:
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HAVE_JXL = False
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# cjxl v0.9.2 41b8cdab
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# hopper.jxl: cjxl hopper.png hopper.jxl -q 75 -e 8
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class TestUnsupportedJxl:
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def test_unsupported(self) -> None:
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if HAVE_JXL:
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JxlImagePlugin.SUPPORTED = False
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file_path = "Tests/images/hopper.jxl"
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with pytest.warns(UserWarning):
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with pytest.raises(OSError):
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with Image.open(file_path):
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pass
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if HAVE_JXL:
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JxlImagePlugin.SUPPORTED = True
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@skip_unless_feature("jxl")
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class TestFileJxl:
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def setup_method(self) -> None:
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self.rgb_mode = "RGB"
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def test_version(self) -> None:
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_jxl.JxlDecoderVersion()
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assert re.search(r"\d+\.\d+\.\d+$", features.version_module("jxl"))
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def test_read_rgb(self) -> None:
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"""
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Can we read a RGB mode Jpeg XL file without error?
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Does it have the bits we expect?
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"""
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with Image.open("Tests/images/hopper.jxl") as image:
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assert image.mode == self.rgb_mode
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assert image.size == (128, 128)
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assert image.format == "JPEG XL"
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image.load()
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image.getdata()
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# generated with:
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# djxl hopper.jxl hopper_jxl_bits.ppm
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assert_image_similar_tofile(image, "Tests/images/hopper_jxl_bits.ppm", 1.0)
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def test_JxlDecode_with_invalid_args(self) -> None:
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"""
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Calling decoder functions with no arguments should result in an error.
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"""
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with pytest.raises(TypeError):
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_jxl.PILJxlDecoder()
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