code: def test_interval_before_stop(t):
      t.start()
      with pytest.raises(ValueError):
          t.interval
  
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 4 for calling a global function with example usage: test_interval_before_stop(t) without return types