@Test
    fun `test fun producer channel`() = runBlocking<Unit> {
        val receoveChannel: ReceiveChannel<Int> = GlobalScope.produce {
            repeat(100) {
                delay(1000)
                send(it)
            }
        }

        val consumer = GlobalScope.launch {
            for (i in receoveChannel) {
                println("received:$i")
            }
        }

        consumer.join()

    }
}

每1s会吐出来一个数字