code: def test_compressed_serializer(self):
      ser = CompressedSerializer(CPickleSerializer())
      from io import BytesIO as StringIO
  
      io = StringIO()
      ser.dump_stream(["abc", "123", range(5)], io)
      io.seek(0)
      self.assertEqual(
          ["abc", "123", range(5)], list(ser.load_stream(io))
      )
      ser.dump_stream(range(1000), io)
      io.seek(0)
      self.assertEqual(
          ["abc", "123", range(5)] + list(range(1000)),
          list(ser.load_stream(io)),
      )
      io.close()
  
imports: import math
  import sys
  import unittest
  from pyspark import serializers
  from pyspark.serializers import CloudPickleSerializer, CompressedSerializer, AutoBatchedSerializer, BatchedSerializer, AutoSerializer, NoOpSerializer, PairDeserializer, FlattenedValuesSerializer, CartesianDeserializer, CPickleSerializer, UTF8Deserializer, MarshalSerializer
  from pyspark.testing.utils import PySparkTestCase, read_int, write_int, ByteArrayOutput, have_numpy, have_scipy
label_desc: Use image node_id 7 for calling the SerializationTestCase obj's underlying member method code with example usage: obj.test_compressed_serializer() without return types