def test_populate_helper_2(self) :
     start = 999999
     result = collatz_find_length(start)
     self.assert_(result == 259)
 def test_populate_helper_3(self) :
      l = 2094992
      self.assert_(collatz_find_length(l) == 136)
 def test_populate_helper_1(self) :
     start = 1
     result = collatz_find_length(start)
     self.assert_(result == 1)