def test_str_split_default(self):
        def test_impl(df):
            return df.A.str.split()

        df = pd.DataFrame({'A': ['AB CC', 'C ABB D', 'G ', ' ', 'g\t f']})
        hpat_func = self.jit(test_impl)
        pd.testing.assert_series_equal(
            hpat_func(df), test_impl(df), check_names=False)