How to use the cyclejs.Rx.ReactiveTest function in cyclejs

Object.keys(observables).forEach((name) => {
            if(observables[name] instanceof Rx.Observable) {
                providedArgs[name] = observables[name];
            } else {
                providedArgs[name] = createObservable(
                    Rx.ReactiveTest.onNext(11, observables[name])
                );
            }
        });

        .define('onNext', (...args) => Rx.ReactiveTest.onNext(...args))
        .define('onCompleted', (...args) => Rx.ReactiveTest.onCompleted(...args))

    injector.define('onNext', (...args) => Rx.ReactiveTest.onNext(...args));