code: def test_cosine_scheduler(init_lr, max_iter):
      scheduler_tester(
          lrs.CosineScheduler, RefCosine, max_iter, [init_lr, max_iter]
      )
  
file_path: nnabla/python/test/utils/learning_rate_scheduler/test_cosine_scheduler.py
imports: import pytest
  from learning_rate_scheduler_test_utils import scheduler_tester
  import nnabla.utils.learning_rate_scheduler
  import math
label_desc: Use image node_id 1 for calling a global function with example usage: test_cosine_scheduler(init_lr, max_iter) without return types