def test_cyclelength_2(self):
cache = [0] * 1000000
v = collatz_cyclelength(5, cache)
self.assert_(v == 6, v)
def test_cyclelength_3(self):
cache = [0] * 1000000
v = collatz_cyclelength(9, cache)
self.assert_(v == 20, v)
def test_cyclelength_1(self):
cache = [0] * 1000000
v = collatz_cyclelength(22, cache)
self.assert_(v == 16, v)