Rx\Functional\Operator\SwitchFirstTest::switchFirst_SkipsOneObservable PHP Метод

    public function switchFirst_SkipsOneObservable()
    {
        $xs = $this->createHotObservable([onNext(300, $this->createColdObservable([onNext(10, 101), onNext(20, 102), onNext(100, 103), onCompleted(110)])), onNext(400, $this->createColdObservable([onNext(10, 201), onNext(20, 202), onNext(110, 203), onNext(120, 204), onCompleted(150)])), onNext(500, $this->createColdObservable([onNext(10, 301), onNext(20, 302), onNext(30, 303), onNext(40, 304), onCompleted(150)])), onCompleted(600)]);
        $results = $this->scheduler->startWithCreate(function () use($xs) {
            return $xs->switchFirst();
        });
        $this->assertMessages([onNext(310, 101), onNext(320, 102), onNext(400, 103), onNext(510, 301), onNext(520, 302), onNext(530, 303), onNext(540, 304), onCompleted(650)], $results->getMessages());
    }