code: def test_make_request(self):
      num_completions = 2
      request = Request(
          prompt="1 2 3",
          model="simple/model1",
          num_completions=num_completions,
      )
      result = self.service.make_request(self.auth, request)
      assert len(result.completions) == num_completions
  
imports: import copy
  import pytest
  import shutil
  import tempfile
  from helm.common.authentication import Authentication
  from helm.common.request import Request
  from helm.proxy.accounts import AuthenticationError, Accounts
  from helm.proxy.query import Query
  from .server_service import ServerService
label_desc: Use image node_id 4 for calling the TestServerService obj's underlying member method code with example usage: obj.test_make_request() without return types