code: def test_train_scores(self):
      assert_equal(
          len(self.clf.decision_scores_), self.X_train.shape[0]
      )
  
imports: from __future__ import division
  from __future__ import print_function
  import os
  import sys
  import unittest
  import numpy
  from numpy.testing import *
  from numpy.testing import assert_array_less
  from numpy.testing import assert_equal
  from numpy.testing import assert_raises
  from sklearn.base import clone
  from scipy.stats import rankdata
  from pyod.models.rod import ROD, rod_3D, rod_nD, angle, sigmoid, process_sub, mad
  from pyod.utils.data import generate_data
label_desc: Use image node_id 3 for calling the TestROD obj's underlying member method code with example usage: obj.test_train_scores() without return types