code: def test_tbed002_readonly_dropdown(test, props):
      test.start_server(get_app(props))
  
      target = test.table("table")
  
      readonly_cell = target.cell(0, "bbb-readonly")
      cell = target.cell(0, "bbb")
  
      readonly_cell.click()
      assert (
          not readonly_cell.is_input()
          and not readonly_cell.is_dropdown()
      )
  
      cell.click()
      assert cell.is_dropdown()
      assert test.get_log_errors() == []
  
imports: import dash
  from utils import get_props, generate_mock_data
  from dash.dash_table import DataTable
  import pytest
label_desc: Use image node_id 3 for calling a global function with example usage: test_tbed002_readonly_dropdown(test, props) without return types