code: def test_cbmt007_early_preventupdate_inputs_above_below(dash_duo):
      app = Dash(__name__, suppress_callback_exceptions=True)
      app.layout = html.Div(id="content")
  
      @app.callback(
          Output("content", "children"), [Input("content", "style")]
      )
      def content(_):
          return html.Div(
              [
                  html.Div(42, id="above-in"),
                  html.Div(id="above-dummy"),
                  html.Hr(),
                  html.Div(0, id="above-out"),
                  html.Div(0, id="below-out"),
                  html.Hr(),
                  html.Div(id="below-dummy"),
                  html.Div(44, id="below-in"),
              ]
          )
  
      # Create 4 callbacks - 2 above, 2 below.
      for pos in ("above", "below"):
  
          @app.callback(
              Output("{}-dummy".format(pos), "children"),
              [Input("{}-dummy".format(pos), "style")],
          )
          def dummy(_):
              raise PreventUpdate
  
          @app.callback(
              Output("{}-out".format(pos), "children"),
              [Input("{}-in".format(pos), "children")],
          )
          def out(v):
              return v
  
      dash_duo.start_server(app)
  
      # as of https://github.com/plotly/dash/issues/1223, above-out would be 0
      dash_duo.wait_for_text_to_equal("#above-out", "42")
      dash_duo.wait_for_text_to_equal("#below-out", "44")
  
file_path: dash/tests/integration/callbacks/test_multiple_callbacks.py
imports: import time
  from multiprocessing import Value, Lock
  import pytest
  from dash import Dash, Input, Output, State, callback_context, html, dcc, dash_table
  from dash.exceptions import PreventUpdate
  import dash.testing.wait
label_desc: Use image node_id 7 for calling a global function with example usage: test_cbmt007_early_preventupdate_inputs_above_below(dash_duo) and returns: html, v