def test_copy_from(self): v = self.v.copy() S = self.S.copy(True) X = SizedArrayPtr_i().alloc(S.size) npt.assert_array_equal(v, S.to_numpy()) X.copy_from(S) npt.assert_array_equal(X.to_numpy(), S.to_numpy()) npt.assert_array_equal(v, S.to_numpy())