public function delay_error()
{
$error = new \Exception();
$xs = $this->createHotObservable([onNext(150, 1), onError(550, $error)]);
$results = $this->scheduler->startWithCreate(function () use($xs) {
return $xs->delay(10, $this->scheduler);
});
$this->assertMessages([onError(550, $error)], $results->getMessages());
$this->assertSubscriptions([subscribe(200, 550)], $xs->getSubscriptions());
}