Method test_capture_empty

mypy/test/testapi.py:29–33

stderr should be captured when a bad option is passed.

(self)

        assert stderr != ""

    def test_capture_empty(self) -> None:
        """stderr should be captured when a bad option is passed."""
        _, stderr, _ = mypy.api.run([])
        assert isinstance(stderr, str)
        assert stderr != ""

    def test_capture_help(self) -> None:
        """stdout should be captured when --help is passed."""