code: def test_rag_pipeline_other_docstore():
      FakeStore = document_store_class("FakeStore")
      with pytest.raises(ValueError, match="InMemoryDocumentStore"):
          assert build_rag_pipeline(document_store=FakeStore())
  
file_path: haystack/test/pipelines/test_rag_pipelines.py
imports: import os
  import pytest
  from haystack.dataclasses import Answer
  from haystack.document_stores.in_memory import InMemoryDocumentStore
  from haystack.pipeline_utils.rag import build_rag_pipeline
  from haystack.testing.factory import document_store_class
label_desc: Use image node_id 2 for calling a global function with example usage: test_rag_pipeline_other_docstore() without return types