Sample integration test with FakeAppUpdateManager to validate in app update implementation.

MainActivityTest_ImmediateCompletes.kt

@Test
fun testImmediateUpdate_Completes() {
  // Setup immediate update.
  fakeAppUpdateManager.partiallyAllowedUpdateType = AppUpdateType.IMMEDIATE
  fakeAppUpdateManager.setUpdateAvailable(2)

  ActivityScenario.launch(MainActivity::class.java)

  // Validate that immediate update is prompted to the user.
  assertTrue(fakeAppUpdateManager.isImmediateFlowVisible)

  // Simulate user's and download behavior.
  fakeAppUpdateManager.userAcceptsUpdate()

  fakeAppUpdateManager.downloadStarts()

  fakeAppUpdateManager.downloadCompletes()

  // Validate that update is completed and app is restarted.
  assertTrue(fakeAppUpdateManager.isInstallSplashScreenVisible)
}