code: def test_parameters(self):
      if (
          not hasattr(self.clf, "decision_scores_")
          or self.clf.decision_scores_ is None
      ):
          self.assertRaises(
              AttributeError, "decision_scores_ is not set"
          )
      if not hasattr(self.clf, "labels_") or self.clf.labels_ is None:
          self.assertRaises(AttributeError, "labels_ is not set")
      if (
          not hasattr(self.clf, "threshold_")
          or self.clf.threshold_ is None
      ):
          self.assertRaises(AttributeError, "threshold_ is not set")
  
imports: from __future__ import division
  from __future__ import print_function
  import os
  import sys
  import unittest
  from numpy.testing import assert_allclose
  from numpy.testing import assert_array_less
  from numpy.testing import assert_equal
  from numpy.testing import assert_raises
  from scipy.stats import rankdata
  from sklearn.base import clone
  from sklearn.metrics import roc_auc_score
  from pyod.models.abod import ABOD
  from pyod.utils.data import generate_data
label_desc: Use image node_id 2 for calling the TestABOD obj's underlying member method code with example usage: obj.test_parameters() without return types