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kotlinlang

how to test timer schedule inside kotlin ?
```        runBlocking {
            val pm = PeerManager(app)
            pm.start()
            val timer = Timer()
            timer.schedule(object : TimerTask() {
                override fun run() {
                    pm.stop()
                }
            }, PEER_LOOP_DELAY*5)
        }```
This code seems not working

What's not working?
What's the goal of `runBlocking` and why are you using it in the snippet.  The `runBlocking` won't wait for the timer to finish since `schedule` is not a blocking call.

I move the code out side the runBlocking, it still can not be test ed

Again what is not working?

Are you trying to unit test and the test is returning before the timer goes off?

I need it stopped after  `pm.stop`  is executed.

You can use `runBlocking` and delay, or a CountdownLatch waiting for the timer to go off.

In general I would rework `PeerManager` to use a virtual timer that allows you to advance its time by a given amount for testing. If it is using coroutines internally, I would look at the test dispatchers and `runTest`.

If peer manager is using coroutines, modify it to be able to take a scope from the test.  Then

```fun test() = runTest {
   val pm = PeerManager(app, backgroundScope)
   pm.start()
   delay(PEER_LOOP_DELAY * 5)
   pm.stop()
   // asserts
}```

If PeerManager is not using coroutines, then you need to figure out how it is delaying (assuming that is your code) and hide that behind an interface, that you can inject a no delay option or a controlled delay.