EricMakesStuff\ServerMonitor\Test\Integration\TestCase::expectsEvent PHP Method

    protected function expectsEvent($eventClassName)
    {
        Event::listen($eventClassName, function ($event) use($eventClassName) {
            $this->firedEvents[] = $eventClassName;
        });
        $this->beforeApplicationDestroyed(function () use($eventClassName) {
            $firedEvents = isset($this->firedEvents) ? $this->firedEvents : [];
            if (!in_array($eventClassName, $firedEvents)) {
                throw new Exception("Event {$eventClassName} not fired");
            }
        });
    }