code: def testScalar(self):
      args = {"records": '1,""', "record_defaults": [[3], [4]]}
  
      expected_out = [1, 4]
  
      self._test(args, expected_out)
  
imports: import numpy
  from tensorflow.python.eager import context
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import errors
  from tensorflow.python.ops import parsing_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 6 for calling the DecodeCSVOpTest obj's underlying member method code with example usage: obj.testScalar() without return types