Method warning

sphinx/testing/util.py:216–220

The in-memory text I/O for the application warning messages.

(self)

    @property
    def warning(self) -> StringIO:
        """The in-memory text I/O for the application warning messages."""
        # sphinx.application.Sphinx uses StringIO for a quiet stream
        assert isinstance(self._warning, StringIO)
        return self._warning

    def cleanup(self, doctrees: bool = False) -> None:
        sys.path[:] = self._saved_path