code: def test_failed_parse(self):
      policy_tree = {
          "leaf": False,
          "feature": "Fruit_apple",
          "threshold": 0.5,
          "left": {
              "leaf": True,
              "n_samples": 8,
              "treatment": "decrease",
          },
          "right": {
              "leaf": True,
              "n_samples": 6,
              "treatment": "increase",
          },
      }
      categoricals = np.array(["Vegetable", "Grain"])
      feature, comparison, value = CausalResult._parse_comparison(
          policy_tree, categoricals
      )
      assert feature == "Fruit_apple"
      assert comparison == "gt"
      assert value == 0.5
  
imports: import numpy
  from responsibleai._tools.causal.causal_result import CausalResult
label_desc: Use image node_id 3 for calling the TestCausalResultParseCategorial obj's underlying member method code with example usage: obj.test_failed_parse() without return types