mirror of
https://github.com/python-pillow/Pillow.git
synced 2025-11-04 01:47:47 +03:00
155 lines
4.7 KiB
Python
155 lines
4.7 KiB
Python
from __future__ import annotations
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import io
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import re
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from typing import Callable
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import pytest
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from PIL import features
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from .helper import skip_unless_feature
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try:
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from PIL import _webp
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except ImportError:
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pass
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def test_check() -> None:
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# Check the correctness of the convenience function
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for module in features.modules:
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assert features.check_module(module) == features.check(module)
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for codec in features.codecs:
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assert features.check_codec(codec) == features.check(codec)
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for feature in features.features:
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assert features.check_feature(feature) == features.check(feature)
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def test_version() -> None:
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# Check the correctness of the convenience function
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# and the format of version numbers
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def test(name: str, function: Callable[[str], bool]) -> None:
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version = features.version(name)
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if not features.check(name):
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assert version is None
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else:
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assert function(name) == version
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if name != "PIL":
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if name == "zlib" and version is not None:
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version = version.replace(".zlib-ng", "")
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assert version is None or re.search(r"\d+(\.\d+)*$", version)
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for module in features.modules:
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test(module, features.version_module)
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for codec in features.codecs:
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test(codec, features.version_codec)
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for feature in features.features:
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test(feature, features.version_feature)
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@skip_unless_feature("webp")
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def test_webp_transparency() -> None:
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assert features.check("transp_webp") != _webp.WebPDecoderBuggyAlpha()
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assert features.check("transp_webp") == _webp.HAVE_TRANSPARENCY
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@skip_unless_feature("webp")
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def test_webp_mux() -> None:
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assert features.check("webp_mux") == _webp.HAVE_WEBPMUX
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@skip_unless_feature("webp")
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def test_webp_anim() -> None:
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assert features.check("webp_anim") == _webp.HAVE_WEBPANIM
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@skip_unless_feature("libjpeg_turbo")
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def test_libjpeg_turbo_version() -> None:
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assert re.search(r"\d+\.\d+\.\d+$", features.version("libjpeg_turbo"))
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@skip_unless_feature("libimagequant")
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def test_libimagequant_version() -> None:
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assert re.search(r"\d+\.\d+\.\d+$", features.version("libimagequant"))
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@pytest.mark.parametrize("feature", features.modules)
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def test_check_modules(feature: str) -> None:
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assert features.check_module(feature) in [True, False]
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@pytest.mark.parametrize("feature", features.codecs)
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def test_check_codecs(feature: str) -> None:
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assert features.check_codec(feature) in [True, False]
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def test_check_warns_on_nonexistent() -> None:
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with pytest.warns(UserWarning) as cm:
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has_feature = features.check("typo")
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assert has_feature is False
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assert str(cm[-1].message) == "Unknown feature 'typo'."
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def test_supported_modules() -> None:
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assert isinstance(features.get_supported_modules(), list)
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assert isinstance(features.get_supported_codecs(), list)
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assert isinstance(features.get_supported_features(), list)
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assert isinstance(features.get_supported(), list)
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def test_unsupported_codec() -> None:
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# Arrange
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codec = "unsupported_codec"
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# Act / Assert
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with pytest.raises(ValueError):
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features.check_codec(codec)
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with pytest.raises(ValueError):
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features.version_codec(codec)
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def test_unsupported_module() -> None:
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# Arrange
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module = "unsupported_module"
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# Act / Assert
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with pytest.raises(ValueError):
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features.check_module(module)
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with pytest.raises(ValueError):
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features.version_module(module)
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@pytest.mark.parametrize("supported_formats", (True, False))
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def test_pilinfo(supported_formats) -> None:
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buf = io.StringIO()
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features.pilinfo(buf, supported_formats=supported_formats)
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out = buf.getvalue()
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lines = out.splitlines()
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assert lines[0] == "-" * 68
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assert lines[1].startswith("Pillow ")
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assert lines[2].startswith("Python ")
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lines = lines[3:]
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while lines[0].startswith(" "):
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lines = lines[1:]
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assert lines[0] == "-" * 68
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assert lines[1].startswith("Python executable is")
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lines = lines[2:]
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if lines[0].startswith("Environment Python files loaded from"):
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lines = lines[1:]
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assert lines[0].startswith("System Python files loaded from")
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assert lines[1] == "-" * 68
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assert lines[2].startswith("Python Pillow modules loaded from ")
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assert lines[3].startswith("Binary Pillow modules loaded from ")
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assert lines[4] == "-" * 68
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jpeg = (
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"\n"
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+ "-" * 68
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+ "\n"
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+ "JPEG image/jpeg\n"
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+ "Extensions: .jfif, .jpe, .jpeg, .jpg\n"
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+ "Features: open, save\n"
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+ "-" * 68
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+ "\n"
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)
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assert supported_formats == (jpeg in out)
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