def METHOD_NAME(self, preprocessor):
    """Is an error thrown when there is no end hidden test statement?"""
    cell = create_text_cell()
    cell.source = dedent(
        """
        something something
        ### BEGIN HIDDEN TESTS
        this is a test!
        """
    ).strip()
    with pytest.raises(RuntimeError):
        preprocessor._remove_hidden_test_region(cell)