I am sorry to make you confuse. This is my fault.

1 min readApr 4, 2020

In my case, put above code in ActivityModule is working.
The MainFragment is not ready in MainFragmentModule.

@Module
abstract class MainActivityModule {

    @FragmentScope
    @ContributesAndroidInjector
    abstract fun contributeMainFragment() : MainFragment

    @Binds
    @IntoMap
    @FragmentKey(MainFragment::class)
    abstract fun bindMainFragment(fragment: MainFragment): Fragment

}

bindMainFragment in MainActivityModule is working. but the Test is not working correctly I think.

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