marcinOz

class TestContextProvider : CoroutineContextProvider() {
    override val Main: CoroutineContext = Dispatchers.Unconfined
    override val IO: CoroutineContext = Dispatchers.Unconfined
}

marcinOz

class TestCoroutineRule : TestRule {
    private val testCoroutineDispatcher = TestCoroutineDispatcher()
    private val testCoroutineScope = TestCoroutineScope(testCoroutineDispatcher)

    override fun apply(base: Statement, description: Description?) = object : Statement() {
        @Throws(Throwable::class)
        override fun evaluate() {
            Dispatchers.setMain(testCoroutineDispatcher)

            base.evaluate()

marcinOz

class MyViewModelTest {

    @get:Rule
    val instantExecutorRule = InstantTaskExecutorRule()

    @get:Rule
    val testCoroutineRule = TestCoroutineRule()

    private lateinit var myViewModel: MyViewModel
    @Mock

marcinOz

open class CoroutineContextProvider @Inject constructor() {
    open val Main: CoroutineContext by lazy { Dispatchers.Main }
    open val IO: CoroutineContext by lazy { Dispatchers.IO }
}

marcinOz

class MyViewModel(
    private val getDataUseCase: GetDataUseCase,
    private val contextProvider: CoroutineContextProvider
) : ViewModel() {

    private val handler = CoroutineExceptionHandler { _, exception ->
        stateLiveData.value = MyViewState.Error(exception)
    }

    private val stateLiveData = MutableLiveData<MyViewState>()

marcinOz

    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$coroutinesVersion"
    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:$coroutinesVersion"
    testImplementation "org.jetbrains.kotlinx:kotlinx-coroutines-test:$coroutinesVersion"

marcinOz

Widget build(BuildContext context) { 
     return Column(children: [ 
        Text(mainText), 
        ...buildMainElements(), 
        if (page != pages.last) 
            FlatButton(child: Text('Next')), 
        for (var section in sections) 
            HeadingAction(section.heading), 
     ]);
}

marcinOz

mixin Wings { 
    String speed = "fast" 
    
    void fly() { 
        print('Flying $speed') 
    }
}

marcinOz

class Bird extends Animal with Wings

marcinOz

class Bird(wings: Flying) : Animal, Flying by wings