code: def test_cbmi001_all_missing_inputs(dash_duo):
      app = Dash(__name__, suppress_callback_exceptions=True)
      app.layout = html.Div(
          [
              html.Div("Title", id="title"),
              html.Button("click", id="btn"),
              html.Div(id="content"),
              html.Div("output1 init", id="out1"),
              html.Div("output2 init", id="out2"),
              html.Div("output3 init", id="out3"),
          ]
      )
  
      @app.callback(
          Output("content", "children"), [Input("btn", "n_clicks")]
      )
      def content(n):
          return (
              [
                  html.Div("A", id="a"),
                  html.Div("B", id="b"),
                  html.Div("C", id="c"),
              ]
              if n
              else "content init"
          )
  
      @app.callback(
          Output("out1", "children"),
          [Input("a", "children"), Input("b", "children")],
          [State("c", "children"), State("title", "children")],
      )
      def out1(a, b, c, title):
          # title exists at the start but State isn't enough to fire the callback
          assert c == "C"
          assert title == "Title"
          return a + b
  
      @app.callback(
          Output("out2", "children"),
          [Input("out1", "children")],
          [State("title", "children")],
      )
      def out2(out1, title):
          return out1 + " - 2 - " + title
  
      @app.callback(
          Output("out3", "children"),
          [Input("out1", "children"), Input("title", "children")],
      )
      def out3(out1, title):
          return out1 + " - 3 - " + title
  
      dash_duo.start_server(app)
      wait_for_queue(dash_duo)
  
      # out3 fires because it has another Input besides out1
      dash_duo.wait_for_text_to_equal(
          "#out3", "output1 init - 3 - Title"
      )
  
      assert dash_duo.find_element("#out1").text == "output1 init"
  
      # out2 doesn't fire because its only input (out1) is "prevented"
      # State items don't matter for this.
      assert dash_duo.find_element("#out2").text == "output2 init"
  
      dash_duo.find_element("#btn").click()
  
      # after a button click all inputs are present so all callbacks fire.
      dash_duo.wait_for_text_to_equal("#out1", "AB")
      dash_duo.wait_for_text_to_equal("#out2", "AB - 2 - Title")
      dash_duo.wait_for_text_to_equal("#out3", "AB - 3 - Title")
  
      assert not dash_duo.get_logs()
  
file_path: dash/tests/integration/callbacks/test_missing_inputs.py
imports: import json
  from dash.testing import wait
  from dash import Dash, Input, Output, State, ALL, MATCH, html
label_desc: Use image node_id 2 for calling a global function with example usage: test_cbmi001_all_missing_inputs(dash_duo) and returns: unknown, unknown, unknown, unknown