code: def test_serialize_pipeline_variables(pipeline_variable):
      s3_uri = random_s3_uri()
      with pytest.raises(
          SerializationError,
          match="Please pass the pipeline variable to the function decorated with @step as an argument",
      ):
          serialize_obj_to_s3(
              obj=(pipeline_variable,),
              sagemaker_session=Mock(),
              s3_uri=s3_uri,
              s3_kms_key=KMS_KEY,
              hmac_key=HMAC_KEY,
          )
  
imports: from __future__ import absolute_import
  import random
  import string
  import pytest
  from mock import patch, Mock
  from sagemaker.experiments.run import Run
  from sagemaker.workflow.parameters import ParameterInteger
  from sagemaker.workflow.function_step import DelayedReturn
  from sagemaker.remote_function.core.serialization import serialize_func_to_s3, deserialize_func_from_s3, serialize_obj_to_s3, deserialize_obj_from_s3, serialize_exception_to_s3, deserialize_exception_from_s3
  from sagemaker.remote_function.errors import ServiceError, SerializationError, DeserializationError
  from tblib import pickling_support
label_desc: Use image node_id 18 for calling a global function with example usage: test_serialize_pipeline_variables(pipeline_variable) without return types