Fixed
Status Update
No update yet.
Comments
se...@google.com
Yigit, do you have time to fix it?
reemission of the same liveData is racy
reemission of the same liveData is racy
se...@google.com
yea i'll take it.
il...@google.com
Thanks for the detailed analysis. This may not be an issue anymore since we've started using Main.immediate there but I' not sure; I'll try to create a test case.
ap...@google.com
just emitting same live data reproduces the issue.
@Test
fun raceTest() {
val subLiveData = MutableLiveData(1)
val subject = liveData(testScope.coroutineContext) {
emitSource(subLiveData)
emitSource(subLiveData) //crashes
}
subject.addObserver().apply {
testScope.advanceUntilIdle()
}
}
@Test
fun raceTest() {
val subLiveData = MutableLiveData(1)
val subject = liveData(testScope.coroutineContext) {
emitSource(subLiveData)
emitSource(subLiveData) //crashes
}
subject.addObserver().apply {
testScope.advanceUntilIdle()
}
}
Description
The keys() method in SavedStateHandle will always include keys for values set via the set() method, but it doesn't include the keys associated with a SavedStateProvider set via setSavedStateProvider() until after state is saved. If you wanted to remove all of the SavedStateProviders by iterating through the keys, whether it would work or not would depend on if state was already saved, which is kind of inconsistent and seems like a bug.