code: def test_head_endpoint(unittest, arcticdb_path, arcticdb):
      pytest.importorskip("arcticdb")
      from dtale.views import head_endpoint
  
      global_state.use_arcticdb_store(
          uri=arcticdb_path, library="dtale"
      )
  
      assert head_endpoint() == "popup/arcticdb"
  
imports: import json
  import mock
  import pytest
  from pkg_resources import parse_version
  import dtale.global_state
  from dtale.app import build_app
  from tests import ExitStack
label_desc: Use image node_id 4 for calling a global function with example usage: test_head_endpoint(unittest, arcticdb_path, arcticdb) without return types