def test_fibbs_3(): assert (fibbs(3) == 2)
def test_fibbs_2(): assert (fibbs (2) == 1)
def test_fibbs_1(): assert (fibbs(1) == 1)
def test_fibbs_0(): assert (fibbs(0) == 0)
def test_fibbs_9(): assert (fibbs(9) == 34)
def test_fibbs_5(): assert (fibbs(5) == 5)