text: import pytest
  
  @pytest.fixture
  def basic_tree():
      return [
          (23, "23"),
          (4, "4"),
          (30, "30"),
          (11, "11"),
          (7, "7"),
          (34, "34"),
          (20, "20"),
          (24, "24"),
          (22, "22"),
          (15, "15"),
          (1, "1")
      ]
  