Method test_no_cache_when_stdin

tests/test_black.py:2301–2309

(self)

                mgr.assert_called()

    def test_no_cache_when_stdin(self) -> None:
        mode = DEFAULT_MODE
        with cache_dir():
            result = BlackRunner().invoke(
                black.main, ["-"], input=BytesIO(b"print('hello')")
            )
            assert not result.exit_code
            cache_file = get_cache_file(mode)
            assert not cache_file.exists()

    def test_no_cache_flag_prevents_writes(self) -> None:
        """--no-cache should neither read nor write the cache"""