code: def test_stop_before_start(t):
      with pytest.raises(ValueError):
          t.stop()
  
file_path: recommenders/tests/unit/recommenders/utils/test_timer.py
imports: import time
  import pytest
  from recommenders.utils.timer import Timer
label_desc: Use image node_id 3 for calling a global function with example usage: test_stop_before_start(t) without return types