code: def test_house_motif():
      motif_generator = HouseMotif()
      assert str(motif_generator) == "HouseMotif()"
  
      motif = motif_generator()
      assert len(motif) == 3
      assert motif.num_nodes == 5
      assert motif.num_edges == 12
      assert motif.y.min() == 0 and motif.y.max() == 2
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_house_motif() without return types