content: import pytest
  from selenium.common.exceptions import TimeoutException
  
  from dash import Dash, html
  
  
  def test_duo001_wait_for_text_error(dash_duo):
      app = Dash(__name__)
      app.layout = html.Div([html.Div("Content", id="content")])
      dash_duo.start_server(app)
  
      with pytest.raises(TimeoutException) as err:
          dash_duo.wait_for_text_to_equal("#content", "Invalid", timeout=1.0)
  
      assert err.value.args[0] == "text -> Invalid not found within 1.0s, found: Content"
  
      with pytest.raises(TimeoutException) as err:
          dash_duo.wait_for_text_to_equal("#content", "None", timeout=1.0)
  
      assert err.value.args[0] == "text -> None not found within 1.0s, found: Content"
  
      with pytest.raises(TimeoutException) as err:
          dash_duo.wait_for_text_to_equal("#none", "None", timeout=1.0)
  
      assert err.value.args[0] == "text -> None not found within 1.0s, #none not found"
  
      with pytest.raises(TimeoutException) as err:
          dash_duo.wait_for_contains_text("#content", "invalid", timeout=1.0)
  
      assert (
          err.value.args[0]
          == "text -> invalid not found inside element within 1.0s, found: Content"
      )
  
      with pytest.raises(TimeoutException) as err:
          dash_duo.wait_for_contains_text("#content", "None", timeout=1.0)
  
      assert (
          err.value.args[0]
          == "text -> None not found inside element within 1.0s, found: Content"
      )
  
      with pytest.raises(TimeoutException) as err:
          dash_duo.wait_for_contains_text("#none", "none", timeout=1.0)
  
      assert (
          err.value.args[0]
          == "text -> none not found inside element within 1.0s, #none not found"
      )
  
  
  def test_duo002_wait_for_text_value(dash_duo):
      app = Dash(__name__)
      app.layout = html.Div([html.Ol([html.Li("Item", id="value-item", value="100")])])
      dash_duo.start_server(app)
  
      dash_duo.wait_for_text_to_equal("#value-item", "100")
      with pytest.raises(TimeoutException) as err:
          dash_duo.wait_for_contains_text("#value-item", "None", timeout=1.0)
  
      assert (
          err.value.args[0]
          == "text -> None not found inside element within 1.0s, found: Item"
      )
  