code: def test_length_with_cycle_mult_one(self):
      policy = OptimizerPolicy(sgdr_phases(10, 1, cycle_mult=1))
      self.assertEqual(len(list(policy.all_steps())), 10)
  
      policy = OptimizerPolicy(sgdr_phases(10, 2, cycle_mult=1))
      self.assertEqual(len(list(policy.all_steps())), 20)
  
      policy = OptimizerPolicy(sgdr_phases(10, 10, cycle_mult=1))
      self.assertEqual(len(list(policy.all_steps())), 100)
  
imports: import unittest
  from poutyne import OptimizerPolicy, Phase, cosinespace, linspace, one_cycle_phases, sgdr_phases
label_desc: Use image node_id 1 for calling the TestSGDR obj's underlying member method code with example usage: obj.test_length_with_cycle_mult_one() without return types