code: def test_empty_fpr_or_tpr_error(fpr, tpr):
      with pytest.raises(TypeError) as excinfo:
          plot.ROC(fpr, tpr)
      assert "fpr and tpr must be defined" in str(excinfo.value)
  
file_path: sklearn-evaluation/tests/test_roc.py
imports: import pytest
  import numpy
  from sklearn_evaluation import plot, __version__
label_desc: Use image node_id 9 for calling a global function with example usage: test_empty_fpr_or_tpr_error(fpr, tpr) without return types