def test_sum_1_2_3(self): eq_(1 + 2 + 3, split_recursive_sum([1, 2, 3]))
def test_sum_minus_3_2_1(self): eq_(-3 - 2 - 1, split_recursive_sum([-3, -2, -1]))
def test_sum_of_negative_and_positive_items(self): eq_(-3 + 5 + 8 - 9, split_recursive_sum([-3, 5, 8, -9]))
def test_sum_4_5_6(self): eq_(4 + 5 + 6, split_recursive_sum([4, 5, 6]))