NoHandlerMessage example

$stats = $pool->list('message_queue_stats');
        static::assertEquals(1, $stats[FooMessage::class]['count']);
        static::assertEquals(3, $stats[BarMessage::class]['count']);

        $this->runWorker();

        $stats = $pool->list('message_queue_stats');
        static::assertEquals(0, $stats[FooMessage::class]['count']);
        static::assertEquals(0, $stats[BarMessage::class]['count']);

        $bus->dispatch(new NoHandlerMessage());

        $stats = $pool->list('message_queue_stats');
        static::assertEquals(1, $stats[NoHandlerMessage::class]['count']);

        $this->runWorker();
        $stats = $pool->list('message_queue_stats');
        static::assertEquals(0, $stats[NoHandlerMessage::class]['count']);
    }
}