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kotlinlang

Is there a way to `cancelAllChildren` of a `runTest` scope?
I have a test where I inject the test `coroutineContext` into a ViewModel and I want to cancel all running jobs inside the ViewModel when the test ends.

```class MyViewModel(coroutineContext: CoroutineContext = Dispatchers.Default) : ViewModel() {
    
    private val coroutineScope = viewModelScope + coroutineContext

    init {
        coroutineScope.launch { myFlow.collect { /* do something with collected items */ } }
    }
}

class MyViewModelTest {

    @Test
    fun testInitMyViewModel() = runTest {
        MyViewModel(coroutineContext) // coroutineContext from test injected here
        // test hangs and times out eventually because myFlow collection is not canceled
    }
}```

```val job = Job()
val coroutineContext: CoroutineContext = coroutineContext + job

job.cancel()```
might work

Yup, works perfectly! Thanks for a quick and helpful answer.

If only it could be somehow automatized...

Doesn't `coroutineContext` already have a `Job` which I could reuse?

Sth like coroutineContext[Job].children().forEach it cancel

The part I was missing was the `coroutineContext[Job]` key!

You can even do
```coroutineContext[Job]?.cancelChildren()```