code: def test_describe(unittest, arcticdb_path, arcticdb):
      pytest.importorskip("arcticdb")
      from dtale.views import startup
  
      global_state.use_arcticdb_store(
          uri=arcticdb_path, library="dtale"
      )
      startup(data="df1")
  
      with app.test_client() as c:
          response = c.get(
              "/dtale/describe/dtale%257Cdf1",
              query_string=dict(col="int_val"),
          )
          response_data = response.get_json()
          unittest.assertEqual(
              response_data["uniques"],
              {
                  "int64": {
                      "data": [
                          {"count": 1, "value": 1},
                          {"count": 1, "value": 2},
                          {"count": 1, "value": 3},
                      ],
                      "top": False,
                      "total": 3,
                  }
              },
          )
  
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 9 for calling a global function with example usage: test_describe(unittest, arcticdb_path, arcticdb) without return types