Function test_cbva004_named_args

tests/integration/callbacks/test_validation.py:142–185

(named_out, named_in, named_state, dash_duo)

@pytest.mark.parametrize("named_out", [True, False])
@pytest.mark.parametrize("named_in,named_state", [(True, True), (False, False)])
def test_cbva004_named_args(named_out, named_in, named_state, dash_duo):
    app = Dash(__name__)
    app.layout = html.Div(
        [
            html.Div("Hi", id="in"),
            html.Div("gh", id="state"),
            html.Div(id="out1"),
            html.Div(id="out2"),
        ]
    )

    def make_args(*a):
        args = []
        kwargs = {}
        names = ["output", "inputs", "state"]
        flags = [named_out, named_in, named_state]
        for ai, name, flag in zip(a, names, flags):
            if flag:
                kwargs[name] = ai
            else:
                args.append(ai)
        return args, kwargs

    args, kwargs = make_args(
        Output("out1", "children"), Input("in", "children"), State("state", "children")
    )

    @app.callback(*args, **kwargs)
    def o1(i, s):
        return "1: " + i + s

    args, kwargs = make_args(
        [Output("out2", "children")],
        [Input("in", "children")],
        [State("state", "children")],
    )

    @app.callback(*args, **kwargs)
    def o2(i, s):
        return ("2: " + i + s,)

    dash_duo.start_server(app)
    dash_duo.wait_for_text_to_equal("#out1", "1: High")
    dash_duo.wait_for_text_to_equal("#out2", "2: High")


def test_cbva005_tuple_args(dash_duo):