class_docstr: Tests variable utterance text data class.
      
docstr: Tests the logics of the text data.
          
docstr_tok: ["Tests","the","logics","of","the","text","data","."]
code: def test_default_setting(self):
      """Tests the logics of the text data."""
      self._run_and_test(self._hparams)
  
imports: import tempfile
  import copy
  import numpy
  import tensorflow
  import texar.tf
label_desc: Use image node_id 3 for calling the VarUttMonoTextDataTest obj's underlying member method code with example usage: obj.test_default_setting() without return types