code: def test_flow_load_config_with_deployment(flow_config):
      flow = Flow.load_config(flow_config)
      with flow:
          docs = flow.post(on="/", inputs=DocumentArray.empty(3))
      assert len(docs) == 3
      assert all([doc.text == "indexed" for doc in docs])
  
imports: import os
  import pytest
  from docarray import DocumentArray
  from jina import Deployment, Flow
label_desc: Use image node_id 2 for calling a global function with example usage: test_flow_load_config_with_deployment(flow_config) without return types