Rx\Functional\Operator\ConcatTest::testConcatReturnThrow PHP Method

    public function testConcatReturnThrow()
    {
        $e1 = $this->createHotObservable([onNext(150, 1), onNext(220, 2), onCompleted(230)]);
        $e2 = $this->createHotObservable([onNext(150, 1), onError(250, new \Exception())]);
        $results = $this->scheduler->startWithCreate(function () use($e1, $e2) {
            return $e1->concat($e2);
        });
        $this->assertMessages([onNext(220, 2), onError(250, new \Exception())], $results->getMessages());
    }