code: def test_make_forecasting_problem(n_timepoints):
      y = make_forecasting_problem(n_timepoints)
  
      assert isinstance(y, pd.Series)
      assert y.shape[0] == n_timepoints
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_make_forecasting_problem(n_timepoints) without return types