code: def test_get_filename():
      assert nbcollection._get_filename("/a/b/c.ipynb") == "c"
  
imports: import pytest
  import pandas
  import numpy
  from sklearn_evaluation import NotebookCollection
  from sklearn_evaluation.nb import NotebookCollection
  from IPython.display import HTML
label_desc: Use image node_id 4 for calling a global function with example usage: test_get_filename() without return types