code: def test_inin_024_port_env_success(dash_duo):
      app = Dash(__name__)
      app.layout = html.Div("hi", "out")
      dash_duo.start_server(app, port="12345")
      assert dash_duo.server_url == "http://localhost:12345"
      dash_duo.wait_for_text_to_equal("#out", "hi")
  
imports: import datetime
  import flask
  import json
  import pytest
  import re
  from bs4 import BeautifulSoup
  import dash_dangerously_set_inner_html
  import dash_flow_example
  import dash
  from dash import Dash, html, dcc, Input, Output
  from dash.exceptions import PreventUpdate
  from dash.testing.wait import until
label_desc: Use image node_id 10 for calling a global function with example usage: test_inin_024_port_env_success(dash_duo) without return types