ios – The way to initialize WidgetInfo for unit testing in Xcode?

I’m making an attempt to initialize the WidgetKit struct WidgetInfo for unit testing a operate that takes WidgetInfo as an argument:

let widgetInfo = WidgetInfo()

This offers me the error:
‘WidgetInfo’ can’t be constructed as a result of it has no accessible initializers

I attempted including:

extension WidgetInfo {
    public init() {}
}

and I can initialize – yay! However then I attempt to set one in all its properties

widgetInfo.household = .systemSmall

and get the error: Can not assign to property: ‘household’ is a ‘let’ fixed

I attempted one other initializer with arguments:

extension WidgetInfo {
    public init(household: WidgetFamily, form: String) {
        self.household = household
        self.form = form
    }
}

and I get the error: ‘let’ property ‘household’ might not be initialized straight; use “self.init(…)” or “self = …” as a substitute

I am caught – is there a manner for me to initialize WidgetInfo? Or one other option to check a operate that takes WidgetInfo as an argument?