code: def test_filter_string(dataframe):
      df = dataframe.filter_string(
          column_name="animals@#$%^",
          search_string="bbit",
      )
  
      assert len(df) == 3
  
imports: import pytest
label_desc: Use image node_id 1 for calling a global function with example usage: test_filter_string(dataframe) without return types