am trying to handle saving state across process death using `SavedStateHandle` and I want to introdu...

# android

[Marko Novakovic]

am trying to handle saving state across process death using SavedStateHandle and I want to introduce Flow like this:

class MyViewModel<State>(
    private val savedStateHandle: SavedStateHandle,
    initialState: State,
) : ViewModel() {
    private var _state by mutableStateOf(initialState)
    val state: State
        get() = _state

    init {
        viewModelScope.launch {
            savedStateHandle.getFlow(STATE, initialState)
                .collect { _state = it }
        }
    }

    fun updateState(reducer: State.() -> State) =
        savedStateHandle.set(STATE, state.reducer())

    companion object {
        private const val STATE = "state"
    }
}

it crashes my tests but when I do regular get, set on savedStateHandle tests work fine.
both work great when I run in on emulator or real device but every single test crashes.
any help?

[Marko Novakovic]

savedStateHandle.getFlow is just extension function -> savedStateHandle.getLiveData().asFlow

[vallebear]

Might be that your test class needs to be annotated with @RunWith(RoboelectricTestRunner::class)

[Marko Novakovic]

why? I have test dispatchers all set up and it worked great until I refactored it