docstr: Unit test load_titanic
docstr_tok: ["Unit","test","load_titanic"]
code: def test_load_titanic(self):
      """
      Unit test load_titanic
      """
      titanic_df, titanic_dict = data_loading("titanic")
      assert isinstance(titanic_df, pd.DataFrame)
      assert isinstance(titanic_dict, dict)
  
file_path: shapash/tests/unit_tests/data/test_data_loader.py
imports: import unittest
  from shapash.data.data_loader import data_loading
  import pandas
label_desc: Use image node_id 2 for calling the Test_load_data obj's underlying member method code with example usage: obj.test_load_titanic() without return types