This Gist is a part of the Article: https://prokash-sarkar.medium.com/unit-testing-with-dagger-2-brewing-a-potion-with-fakes-mocks-and-custom-rules-in-android-7f0ab7b22cb

BaseApplication.kt

open class BaseApplication : DaggerApplication() {
    override fun applicationInjector(): AndroidInjector<out DaggerApplication> {
        return initializeDaggerComponent()
    }
    open fun initializeDaggerComponent(): AppComponent {
        val component: AppComponent = DaggerAppComponent.factory()
            .create(this)
        component.inject(this)
        return component
    }
}