Testing observable Value<T>

[thipokch]

How would you go about testing the Value<Model> abstraction without Reaktive? In other parts of the project, I've used turbine to test my implementation of MviKotlin with coroutine extension. I could try testing the flow from the MviKotlin, but I'm not sure if that's a good idea. Thanks! ❤️

 override val models: Value<Model> = store.asValue().map {
        Model(
            a = it.a,
            b = it.b,
        )
    }

[arkivanov]

You can just verify the value: some.models.value. Please see an example: https://github.com/JetBrains/compose-jb/blob/620b50ae1205bccbc4982bcc5a6d4c86ef515edd/examples/todoapp/common/main/src/commonTest/kotlin/example/todo/common/main/integration/TodoMainTest.kt#L126

[thipokch]

Wow, thanks for the quick response. This works most of the time, however it doesn't work reliably when MviKotlin executes an async request that delays updates to model.

[arkivanov]

It's adviced do override schedulers/dispatchers in tests. For coroutines you can use TestDispatcher (or UnconfinedDispatcher for simple cases without delays).