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Reset color-related envvars for testing (#11638) 

Reset color-related environment variables in a fixture to prevent them
from affecting test results.  Otherwise, some of the tests fail
e.g. if NO_COLOR is set in the calling environment.
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Michał Górny 2023-11-26 15:09:18 +01:00 committed by GitHub
parent e0d5754d5d
commit 85e0f676c5
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1
changelog/11638.trivial.rst Normal file
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@ -0,0 +1 @@
Fixed the selftests to pass correctly if ``FORCE_COLOR``, ``NO_COLOR`` or ``PY_COLORS`` is set in the calling environment.

11
testing/conftest.py
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@ -31,6 +31,17 @@ def set_column_width(monkeypatch: pytest.MonkeyPatch) -> None:
monkeypatch.setenv("COLUMNS", "80")
@pytest.fixture(autouse=True)
def reset_colors(monkeypatch: pytest.MonkeyPatch) -> None:
"""
Reset all color-related variables to prevent them from affecting internal pytest output
in tests that depend on it.
"""
monkeypatch.delenv("PY_COLORS", raising=False)
monkeypatch.delenv("NO_COLOR", raising=False)
monkeypatch.delenv("FORCE_COLOR", raising=False)
@pytest.hookimpl(wrapper=True, tryfirst=True)
def pytest_collection_modifyitems(items) -> Generator[None, None, None]:
"""Prefer faster tests.