code: def test_llgo001_location_logout(dash_dcc):
      app = Dash(__name__)
  
      @app.server.route("/_logout", methods=["POST"])
      def on_logout():
          rep = flask.redirect("/logged-out")
          rep.set_cookie("logout-cookie", "", 0)
          return rep
  
      app.layout = html.Div(
          [
              html.H2("Logout test"),
              dcc.Location(id="location"),
              html.Div(id="content"),
          ]
      )
  
      @app.callback(
          Output("content", "children"), [Input("location", "pathname")]
      )
      def on_location(location_path):
          if location_path is None:
              raise PreventUpdate
  
          if "logged-out" in location_path:
              return "Logged out"
          else:
  
              @flask.after_this_request
              def _insert_cookie(rep):
                  rep.set_cookie("logout-cookie", "logged-in")
                  return rep
  
              return dcc.LogoutButton(
                  id="logout-btn", logout_url="/_logout"
              )
  
      dash_dcc.start_server(app)
      time.sleep(1)
      dash_dcc.percy_snapshot("Core Logout button")
  
      assert (
          dash_dcc.driver.get_cookie("logout-cookie")["value"]
          == "logged-in"
      )
  
      dash_dcc.wait_for_element("#logout-btn").click()
      dash_dcc.wait_for_text_to_equal("#content", "Logged out")
  
      assert not dash_dcc.driver.get_cookie("logout-cookie")
  
      assert dash_dcc.get_logs() == []
  
imports: from dash.exceptions import PreventUpdate
  from dash import Dash, Input, Output, dcc, html
  import flask
  import time
label_desc: Use image node_id 1 for calling a global function with example usage: test_llgo001_location_logout(dash_dcc) and returns: rep, str, dcc, rep