code: def test_data() -> None:
      import bokeh.sampledata.us_states as bsu
  
      assert isinstance(bsu.data, dict)
  
      # check detail for package data
      assert len(bsu.data) == 51
  
imports: from __future__ import annotations
  import pytest
  from tests.support.util.api import verify_all
label_desc: Use image node_id 1 for calling a global function with example usage: test_data() without return types