code: def test_failed_func(self):
      # Test failure in
      # TransformFunction.apply(rdd: Option[RDD[_]], time: Time)
      input = [self.sc.parallelize([d], 1) for d in range(4)]
      input_stream = self.ssc.queueStream(input)
  
      def failed_func(i):
          raise ValueError("This is a special error")
  
      input_stream.map(failed_func).pprint()
      self.ssc.start()
      try:
          self.ssc.awaitTerminationOrTimeout(10)
      except BaseException:
          import traceback
  
          failure = traceback.format_exc()
          self.assertTrue("This is a special error" in failure)
          return
  
      self.fail("a failed func should throw an error")
  
imports: import operator
  import os
  import shutil
  import tempfile
  import time
  import unittest
  from functools import reduce
  from itertools import chain
  import platform
  from pyspark import SparkConf, SparkContext
  from pyspark.streaming import StreamingContext
  from pyspark.testing.streamingutils import PySparkStreamingTestCase
label_desc: Use image node_id 24 for calling the BasicOperationTests obj's underlying member method code with example usage: obj.test_failed_func() without return types