code: def test_dvcv016_circular_with_input_output(dash_duo):
      app = Dash(__name__)
  
      app.layout = html.Div(
          [
              html.Div([], id="a"),
              html.Div(["Bye"], id="b"),
              html.Div(["Hello"], id="c"),
          ]
      )
  
      @app.callback(
          [Output("a", "children"), Output("b", "children")],
          [
              Input("a", "children"),
              Input("b", "children"),
              Input("c", "children"),
          ],
      )
      def c1(a, b, c):
          return a, b
  
      @app.callback(Output("c", "children"), [Input("a", "children")])
      def c2(children):
          return children
  
      dash_duo.start_server(app, **debugging)
  
      specs = [
          [
              "Circular Dependencies",
              [
                  "Dependency Cycle Found:",
                  "a.children__output -> c.children",
                  "c.children -> a.children__output",
              ],
          ]
      ]
      check_errors(dash_duo, specs)
  
imports: import flask
  import pytest
  from dash import Dash, Input, Output, State, MATCH, ALL, ALLSMALLER, html, dcc
  from dash.testing import wait
label_desc: Use image node_id 19 for calling a global function with example usage: test_dvcv016_circular_with_input_output(dash_duo) and returns: a,  b, children