code: def testNanAndInf(self):
      a = np.array([np.inf, np.nan, 7.0])
      self.assertTrue(debug_data.has_inf_or_nan(self._dummy_datum, a))
  
imports: import os
  import platform
  import tempfile
  import numpy
  from tensorflow.core.framework import graph_pb2
  from tensorflow.core.framework import tensor_pb2
  from tensorflow.python.debug.lib import debug_data
  from tensorflow.python.framework import test_util
  from tensorflow.python.lib.io import file_io
  from tensorflow.python.platform import gfile
  from tensorflow.python.platform import googletest
  from tensorflow.python.platform import test
label_desc: Use image node_id 4 for calling the HasNanOrInfTest obj's underlying member method code with example usage: obj.testNanAndInf() without return types