Rx\Functional\Operator\ConcatAllTest::concatAll_timer_missing_item PHP Method

    public function concatAll_timer_missing_item()
    {
        $xs = $this->createHotObservable([onNext(201, 0), onNext(206, 1), onNext(211, 2), onCompleted(212)]);
        $results = $this->scheduler->startWithCreate(function () use($xs) {
            return $xs->map(function ($x) {
                return Observable::timer(5)->mapTo($x);
            })->concatAll();
        });
        $this->assertMessages([onNext(206, 0), onNext(211, 1), onNext(216, 2), onCompleted(216)], $results->getMessages());
    }