MVVM on Android

Sep 1 2022 · Kotlin 1.6, Android 12, Android Studio Chipmunk | 2021.2.1 Patch 1

Part 1: MVVM on Android

07. Test the ViewModel

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Notes: 07. Test the ViewModel

You’ll need to add the mockito-inline dependency because you could get into some issues when trying to moch the CreatureGenerator class. This is added in the final project in the download materials.

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When testing the model layer, we used TDD. For the view model, we’ll now add an after-the-fact test for the view model we’ve just created.

  testImplementation "org.mockito:mockito-core:2.11.0"
testImplementation "android.arch.core:core-testing:$arch_comp_version"
class CreatureViewModelTest {
  private lateinit var creatureViewModel: CreatureViewModel
  var rule: TestRule = InstantTaskExecutorRule()
  lateinit var mockGenerator: CreatureGenerator
  fun setup() {
    creatureViewModel = CreatureViewModel(mockGenerator)
  fun testSetupCreature() {
    val attributes = CreatureAttributes(10, 3, 7)
    val stubCreature = Creature(attributes, 87, "Test Creature")
    creatureViewModel.intelligence = 10
    creatureViewModel.strength = 3
    creatureViewModel.endurance = 7
    assertEquals(`stubCreature`, creatureViewModel.creature)