code: def test_load_hearts():
      df = load_hearts(as_frame=True)
      assert df.shape == (303, 14)
  
file_path: scikit-lego/tests/test_datasets.py
imports: import pytest
  from sklego.datasets import load_abalone, load_chicken, load_hearts, load_penguins, make_simpleseries
label_desc: Use image node_id 6 for calling a global function with example usage: test_load_hearts() without return types