Rx\Functional\Operator\DeferTest::defer_error PHP Method

    public function defer_error()
    {
        $invoked = 0;
        $xs = null;
        $results = $this->scheduler->startWithCreate(function () use(&$invoked, &$xs) {
            return Observable::defer(function () use(&$invoked, &$xs) {
                $invoked++;
                $xs = $this->createColdObservable([onNext(100, $this->scheduler->getClock()), onError(200, new \Exception("error"))]);
                return $xs;
            });
        });
        $this->assertMessages([onNext(300, 200), onError(400, new \Exception('error'))], $results->getMessages());
        $this->assertEquals(1, $invoked);
        $this->assertSubscriptions([subscribe(200, 400)], $xs->getSubscriptions());
    }