code: def test_objectmapper(self):
      df = pdml.ModelFrame([])
      self.assertIs(df.naive_bayes.GaussianNB, nb.GaussianNB)
      self.assertIs(df.naive_bayes.MultinomialNB, nb.MultinomialNB)
      self.assertIs(df.naive_bayes.BernoulliNB, nb.BernoulliNB)
  
file_path: pandas-ml/pandas_ml/skaccessors/test/test_naive_bayes.py
imports: import pytest
  import sklearn.datasets
  import sklearn.naive_bayes
  import pandas_ml
  import pandas_ml.util.testing
label_desc: Use image node_id 1 for calling the TestNaiveBayes obj's underlying member method code with example usage: obj.test_objectmapper() without return types