Function cache_dir

tests/test_black.py:77–83

(exists: bool = True)

@contextmanager
def cache_dir(exists: bool = True) -> Iterator[Path]:
    with TemporaryDirectory() as workspace:
        cache_dir = Path(workspace)
        if not exists:
            cache_dir = cache_dir / "new"
        with patch("black.cache.CACHE_DIR", cache_dir):
            yield cache_dir


@contextmanager