Function test_pch006_base_operators

tests/integration/test_patch.py:484–573

(dash_duo)

def test_pch006_base_operators(dash_duo):
    app = Dash()

    app.layout = [
        dcc.Store(data=2, id="store"),
        html.Button("add-one", id="add-one"),
        html.Button("remove-one", id="remove-one"),
        html.Button("mul-two", id="mul-two"),
        html.Button("div-two", id="div-two"),
        html.Button("merge", id="merge"),
        dcc.Store(data={"initial": "initial"}, id="dict-store"),
        html.Div(id="store-output"),
        html.Div(id="dict-store-output"),
    ]

    @app.callback(
        Output("store", "data"), Input("add-one", "n_clicks"), prevent_initial_call=True
    )
    def on_add(_):
        patched = Patch()
        patched += 1
        return patched

    @app.callback(
        Output("store", "data", allow_duplicate=True),
        Input("remove-one", "n_clicks"),
        prevent_initial_call=True,
    )
    def on_remove(_):
        patched = Patch()
        patched -= 1
        return patched

    @app.callback(
        Output("store", "data", allow_duplicate=True),
        Input("mul-two", "n_clicks"),
        prevent_initial_call=True,
    )
    def on_mul(_):
        patched = Patch()
        patched *= 2
        return patched

    @app.callback(
        Output("store", "data", allow_duplicate=True),
        Input("div-two", "n_clicks"),
        prevent_initial_call=True,
    )
    def on_div(_):
        patched = Patch()
        patched /= 2
        return patched

    @app.callback(
        Output("dict-store", "data", allow_duplicate=True),
        Input("merge", "n_clicks"),
        prevent_initial_call=True,
    )