code: def test_objectmapper(self):
      df = pdml.ModelFrame([])
      self.assertIs(df.decomposition.PCA, decomposition.PCA)
      self.assertIs(
          df.decomposition.IncrementalPCA, decomposition.IncrementalPCA
      )
      self.assertIs(df.decomposition.KernelPCA, decomposition.KernelPCA)
      self.assertIs(
          df.decomposition.FactorAnalysis, decomposition.FactorAnalysis
      )
      self.assertIs(df.decomposition.FastICA, decomposition.FastICA)
      self.assertIs(
          df.decomposition.TruncatedSVD, decomposition.TruncatedSVD
      )
      self.assertIs(df.decomposition.NMF, decomposition.NMF)
      self.assertIs(df.decomposition.SparsePCA, decomposition.SparsePCA)
      self.assertIs(
          df.decomposition.MiniBatchSparsePCA,
          decomposition.MiniBatchSparsePCA,
      )
      self.assertIs(
          df.decomposition.SparseCoder, decomposition.SparseCoder
      )
      self.assertIs(
          df.decomposition.DictionaryLearning,
          decomposition.DictionaryLearning,
      )
      self.assertIs(
          df.decomposition.MiniBatchDictionaryLearning,
          decomposition.MiniBatchDictionaryLearning,
      )
  
      self.assertIs(
          df.decomposition.LatentDirichletAllocation,
          decomposition.LatentDirichletAllocation,
      )
  
file_path: pandas-ml/pandas_ml/skaccessors/test/test_decomposition.py
imports: import pytest
  import sklearn.datasets
  import sklearn.decomposition
  import pandas_ml
  import pandas_ml.util.testing
label_desc: Use image node_id 1 for calling the TestDecomposition obj's underlying member method code with example usage: obj.test_objectmapper() without return types