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@Ghedeon
Created February 1, 2019 18:58
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Coroutine Test
class AccountOwnerTypeViewModelTest {
@Rule
@JvmField
val rule = InstantTaskExecutorRule()
val mainThreadSurrogate = newSingleThreadContext("UI thread")
@Before
fun setUp() {
Dispatchers.setMain(mainThreadSurrogate)
}
@After
fun tearDown() {
Dispatchers.resetMain()
mainThreadSurrogate.close()
}
@Test
fun bar(){
val viewModel = ViewModel()
val acc = mutableListOf<Int>()
viewModel.foo.observeForever{acc.add(it)}
runBlocking {
repeat(100) {
viewModel.start()
}
}
assertEquals(acc, IntArray(100){it}.asList())
}
class ViewModel : CoroutineScope {
private val job = Job()
override val coroutineContext: CoroutineContext = job + Dispatchers.Main
val foo = MutableLiveData<Int>()
private var i = 0
fun start(){
launch{
foo.postValue(i++)
}
}
}
}
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