code: def test_shuffle(dataframe):
      """
      Test the shuffle function.
  
      This test checks that the set of dataframes has identical columns and
      number of rows.
      """
      df = dataframe.shuffle()
      assert len(df) == len(dataframe)
      assert set(df.columns) == set(dataframe.columns)
  
label_desc: Use image node_id 2 for calling a global function with example usage: test_shuffle(dataframe) without return types