Function update_output

tests/integration/callbacks/test_callback_context.py:19–21

(value)

    @app.callback(Output("output", "children"), [Input("input", "value")])
    def update_output(value):
        callback_context.response.set_cookie("dash_cookie", value + " - cookie")
        return value + " - output"

    dash_duo.start_server(app)
    dash_duo.wait_for_text_to_equal("#output", "ab - output")