export function buildUIWithWeakRefAndInteract<T extends View>(createFunc: () => T, interactWithViewFunc?: (view: T) => void, done?) {
    clearPage();
    const page = getCurrentPage();
    const weakRef = new WeakRef(createFunc());
    page.content = weakRef.get();
    if (interactWithViewFunc) {
        interactWithViewFunc(weakRef.get());
    }
    page.content = null;
    // Give a change for native cleanup (e.g. keyboard close, etc.).
    TKUnit.wait(0.001);
    if (page.ios) {
        /* tslint:disable:no-unused-expression */
        // Could cause GC on the next call.
        // NOTE: Don't replace this with forceGC();
        new ArrayBuffer(4 * 1024 * 1024);

        // An additional GC and wait are needed since WebKit upgrade to version 12.0
        // (TEXT-FIELD.testMemoryLeak test started failing sporadically)
        utils.GC();
        TKUnit.wait(0.1);
    }
    utils.GC();
    try {
        TKUnit.assert(!weakRef.get(), weakRef.get() + " leaked!");
        done(null);
    }
    catch (ex) {
        done(ex);
    }
}

export function forceGC() {
    if (isIOS) {
        /* tslint:disable:no-unused-expression */
        // Could cause GC on the next call.
        new ArrayBuffer(4 * 1024 * 1024);
    }

    utils.GC();
    TKUnit.wait(0.001);
}

export function clear(args) {
    repeaterIds
        .map(name => args.object.page.getViewById(name))
        .forEach(repeater => {
            repeater.bindingContext = null;
        });

    args.object.page.getViewById("title").text = "---";

    utils.GC();
}