jobinlawrance

val appModule = module {
    single { //Existing koin dependencies }
    fragment { MainFragment("Now this won't crash") }
}

jobinlawrance

class MainActivity : AppCompatActivity() {
	
  val bundle = Bundle().apply {
    putString(MainFragment.KEY_TEXT, "Now this won't crash")
  }
  val mainFragment = MainFragment().apply {
    arguements = bundle
  }
	

jobinlawrance

inline fun <reified T : Fragment> AppCompatActivity.fragmentByTagOrNew(
    tag: String, noinline factory: () -> T
): Lazy<T> {
    return lazy(LazyThreadSafetyMode.NONE) {
        supportFragmentManager.findFragmentByTag(tag) as? T ?: factory()
    }
}

jobinlawrance

class MainActivity : AppCompatActivity() {
	
  val mainFragment by fragmentByTagOrNew(MainFragment.TAG) {
    MainFragment().withArgs {
      putString(MainFragment.KEY_TEXT, "Now this won't crash")
    }
  }
	
  override fun onCreate(savedInstanceState: Bundle?) {
   

jobinlawrance

class HomeApplication: Application() {
    internal lateinit var koinApplication: KoinApplication
	
    override fun onCreate() {
        super.onCreate()
	    koinApplication = startKoin {
	    	androidContext(this@HomeApplication)
	    	modules(apiModule, interactorModule, viewModelModule)
	    }	

jobinlawrance

import org.koin.androidx.viewmodel.ext.android.viewModel
...

class HomeActivity: AppCompatActivity() {
    
    private val homeViewModel by viewModel<HomeViewModel>()
    
    override fun onCreate(..) {
        ...
        

jobinlawrance

class HomeViewModel(val homeInteractor: HomeInteractor) {
    
    private val resultLiveData = MutableLiveData<Result<String>>()
    
    fun getResultFromApi(): LiveData<Result<String>> {
        homeInteractor.getResultFromApi()
            .startWith(Result.InProgress)
            .subscribe({ someString ->
                resultLiveData.value = Result.Success(someString)
            }, { err ->

jobinlawrance

import ...

@RunWith(AndroidJUnit4ClassRunner::class)
class HomeActivityTest: KoinTest {
    
    @get:Rule
    var intentRule = IntentsTestRule(HomeActivity::class.java, true, false)
    
    lateinit var mockModule: Module
    lateinit var mockedInteractor: HomeInteractor

jobinlawrance

...
    @Before
    override fun setup() {
        val realInteractor = get<HomeInteractor>()
        mockedInteractor = Mockito.spy(realInteractor)
        mockedModule = module {
            single(override = true) { mockedInteractor }
        }
        
        loadKoinModules(mockModule)

jobinlawrance

class TestHomeApplication: HomeApplication { // make HomeApplication open at this point
    
    override fun onCreate() {
        super.onCreate()
        koinApplication.modules(testModule)
    }
}

val testModule = module {