Raiden18

fun assertThat(someViewModel: SomeViewModel): ViewModelStateVerifier { // inspired by Hamcrest
    return ViewModelStateVerifier(someViewModel)
}

class ViewModelStateVerifier(private val someViewModel: SomeViewModel) {

    fun loaderIsShown(): ViewModelStateVerifier {
        assertTrue(someViewModel.getLoaderState().value)
        return this
    }

Raiden18

class SomeViewModelTest {

    private lateinit var someViewModel: SomeViewModel
    private val someInteractor: SomeInteractor = mockk(relaxed = true)
    private val dataToLoad: String = "Data to load"

    @Before
    fun setUp() {
        clearAllMocks()
    }

Raiden18

sealed class ContentState {
    object Hidden : ContentState()
    data class Shown(val data: String) : ContentState()
}

class SomeViewModel(
    private val someInteractor: SomeInteractor,
    private val dispatchersProvider: DispatchersProvider
) : ViewModel() {

Raiden18

sealed class Icon {
  data class Resources(val name: String)
  data class Url(val url: String)
}

Raiden18

data class IconResponse(
  @SerializedName("type")
  val type: IconTypeEnum,
  @SerializedName("name")
  val name: String?,
  @SerializedName("url")
  val url: String?
)

Raiden18

// Icon from android resource
{
  "icon": {
    type: "resources"
    "name": "resources_name" 
  }
}

// Icon from url
{

Raiden18

data class YourUiModel(
  val title: String,
  val description: String,
  val visibility: Int // View.GONE, etc
)

class YourViewHolder(
  view: View
): RecyclerView.ViewHolder(view) {
  //...

Raiden18

data class YourModelResponse(
  @SerializedName("field1")
  val field1: String,
  @SerializedName("field2")
  val field2: String
)

Raiden18

data class YourDomainDto(
  val field1: String,
  val field2: String
)

Raiden18

sealed class ButtonSize() {
    object Small : ButtonSize()
    object Medium : ButtonSize()
    object Large : ButtonSize()
    object Huge : ButtonSize()
    data class Custom(
        val heightDpInt: Int,
        val color: Color,
        val textResId: Int
    ) : ButtonSize()