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

    public function switchFirst_Data()
    {
        $xs = $this->createHotObservable([onNext(300, $this->createColdObservable([onNext(10, 101), onNext(20, 102), onNext(110, 103), onNext(120, 104), onNext(210, 105), onNext(220, 106), onCompleted(230)])), onNext(400, $this->createColdObservable([onNext(10, 201), onNext(20, 202), onNext(30, 203), onNext(40, 204), onCompleted(50)])), 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(410, 103), onNext(420, 104), onNext(510, 105), onNext(520, 106), onCompleted(600)], $results->getMessages());
    }