If anyone has experience with turbine and mutable ...

# mockk

[Adam Pelsoczi]

If anyone has experience with turbine and mutable state flow. Why would this work:

val mutableSharedFlow = MutableSharedFlow<Int>()
mutableSharedFlow.test {
    mutableSharedFlow.emit(1)
    assertEquals(awaitItem(), 1)
}

and this does not work:

runTest(UnconfinedTestDispatcher()) {
    val bleAdapterEnabledFlow = MutableStateFlow(false)
    val stateFlow = bleAdapterEnabledFlow.stateIn(this)
    stateFlow.test {
        bleAdapterEnabledFlow.emit(true)
        assertEquals(awaitItem(), true)
    }
}

[Adam S]

this channel is for MockK, which I don’t think is what you’re asking about? You might have a better chance of an answer in a more related channel like #coroutines

[Eduard Boloș]

@Adam Pelsoczi not sure why it doesn't work, but why would you even do .stateIn() on a MutableStateFlow? Maybe you want to do .asStateFlow() instead if you want to make it non-mutable?

[Adam Pelsoczi]

I wanted it to be mutablestate flow because I had a function which returns a combine() flow from various flows bleAdapterEnabledFlow and bleConnectionFlow, but the actual problem was that I had a class which had two dependency injections injected, and those were mockk and I had every mockk returns either flows. Anyways the problem was that I had the class under test instantiated in the Before annotation and then I was calling every { injected.flow } returns mutabableStateFlow. So when I wrote mutableStateFlow.emit() the emissions weren't happening