def test_invalid_scalar_index(adata, index):
    # https://github.com/theislab/anndata/issues/619
    with pytest.raises(IndexError, match=r".*index.* out of range\."):
        _ = adata[index]
def visitdir(self, dir):
        dir = normalizerootdir(dir, "visitdir")
        if self._prefix and dir in self._fileset:
            return "all"
        if not self._prefix:
            return True
        return (
            dir in self._fileset
            or dir in self._dirs
            or any(parentdir in self._fileset for parentdir in util.finddirs(dir))
        )