def test_rolling2(self):
        def test_impl(n):
            df = pd.DataFrame({'A': np.ones(n), 'B': np.random.ranf(n)})
            df['moving average'] = df.A.rolling(window=5, center=True).mean()
            return df['moving average'].sum()

        hpat_func = self.jit(test_impl)
        n = 121
        self.assertEqual(hpat_func(n), test_impl(n))
        self.assertEqual(count_array_REPs(), 0)
        self.assertEqual(count_parfor_REPs(), 0)