Method capwarn

testing/test_warnings.py:658–670

(self, pytester: Pytester)

class TestStackLevel:
    @pytest.fixture
    def capwarn(self, pytester: Pytester):
        class CapturedWarnings:
            captured: List[
                Tuple[warnings.WarningMessage, Optional[Tuple[str, int, str]]]
            ] = []

            @classmethod
            def pytest_warning_recorded(cls, warning_message, when, nodeid, location):
                cls.captured.append((warning_message, location))

        pytester.plugins = [CapturedWarnings()]

        return CapturedWarnings

    def test_issue4445_rewrite(self, pytester: Pytester, capwarn) -> None:
        """#4445: Make sure the warning points to a reasonable location