Function test_pytest_addopts_before_pytester

testing/test_pytester.py:620–628

(request, monkeypatch: MonkeyPatch)

def test_pytest_addopts_before_pytester(request, monkeypatch: MonkeyPatch) -> None:
    orig = os.environ.get("PYTEST_ADDOPTS", None)
    monkeypatch.setenv("PYTEST_ADDOPTS", "--orig-unused")
    pytester: Pytester = request.getfixturevalue("pytester")
    assert "PYTEST_ADDOPTS" not in os.environ
    pytester._finalize()
    assert os.environ.get("PYTEST_ADDOPTS") == "--orig-unused"
    monkeypatch.undo()
    assert os.environ.get("PYTEST_ADDOPTS") == orig


def test_run_stdin(pytester: Pytester) -> None: