Dagger Hilt와 App Startup 조합 시 AndroidTest 불가능

TL; DR

2022-05-11, dagger 2.42, startup 1.20.0-alpha01 기준 불가능합니다.

문제

App Startup 적용 이후 AndroidTest(Instrumented Test)가 실행되지 않습니다. (debugger 무한 대기)
Logcat을 보니 다음과 비슷한 오류가 찍힙니다.

2022-04-11 10:41:09.352 24409-24409/com.example.appstartupinstrumentationtest E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.appstartupinstrumentationtest, PID: 24409
    java.lang.RuntimeException: Unable to get provider androidx.startup.InitializationProvider: androidx.startup.StartupException: java.lang.IllegalStateException: The component was not created. Check that you have added the HiltAndroidRule.
        at android.app.ActivityThread.installProvider(ActivityThread.java:8195)
        at android.app.ActivityThread.installContentProviders(ActivityThread.java:7726)
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:7546)
        at android.app.ActivityThread.access$1500(ActivityThread.java:301)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2166)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:246)
        at android.app.ActivityThread.main(ActivityThread.java:8633)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)
     Caused by: androidx.startup.StartupException: java.lang.IllegalStateException: The component was not created. Check that you have added the HiltAndroidRule.
        at androidx.startup.AppInitializer.doInitialize(AppInitializer.java:162)
        at androidx.startup.AppInitializer.discoverAndInitialize(AppInitializer.java:198)
        at androidx.startup.InitializationProvider.onCreate(InitializationProvider.java:38)
        at android.content.ContentProvider.attachInfo(ContentProvider.java:2429)
        at android.content.ContentProvider.attachInfo(ContentProvider.java:2399)
        at android.app.ActivityThread.installProvider(ActivityThread.java:8190)
        at android.app.ActivityThread.installContentProviders(ActivityThread.java:7726) 
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:7546) 
        at android.app.ActivityThread.access$1500(ActivityThread.java:301) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2166) 
        at android.os.Handler.dispatchMessage(Handler.java:106) 
        at android.os.Looper.loop(Looper.java:246) 
        at android.app.ActivityThread.main(ActivityThread.java:8633) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130) 
     Caused by: java.lang.IllegalStateException: The component was not created. Check that you have added the HiltAndroidRule.
        at dagger.hilt.internal.Preconditions.checkState(Preconditions.java:83)
        at dagger.hilt.android.internal.testing.TestApplicationComponentManager.generatedComponent(TestApplicationComponentManager.java:96)
        at dagger.hilt.android.testing.HiltTestApplication.generatedComponent(HiltTestApplication.java:49)
        at dagger.hilt.EntryPoints.get(EntryPoints.java:59)
        at dagger.hilt.android.EntryPointAccessors.fromApplication(EntryPointAccessors.kt:35)
        at com.example.appstartupinstrumentationtest.InitializerEntryPoint$Companion.resolve(InitializerEntryPoint.kt:20)
        at com.example.appstartupinstrumentationtest.SomeComponentInitializer.create(SomeComponentInitializer.kt:10)
        at com.example.appstartupinstrumentationtest.SomeComponentInitializer.create(SomeComponentInitializer.kt:7)
        at androidx.startup.AppInitializer.doInitialize(AppInitializer.java:155)
        at androidx.startup.AppInitializer.discoverAndInitialize(AppInitializer.java:198) 
        at androidx.startup.InitializationProvider.onCreate(InitializationProvider.java:38) 
        at android.content.ContentProvider.attachInfo(ContentProvider.java:2429) 
        at android.content.ContentProvider.attachInfo(ContentProvider.java:2399) 
        at android.app.ActivityThread.installProvider(ActivityThread.java:8190) 
        at android.app.ActivityThread.installContentProviders(ActivityThread.java:7726) 
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:7546) 
        at android.app.ActivityThread.access$1500(ActivityThread.java:301) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2166) 
        at android.os.Handler.dispatchMessage(Handler.java:106) 
        at android.os.Looper.loop(Looper.java:246) 
        at android.app.ActivityThread.main(ActivityThread.java:8633) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)

출처: https://github.com/google/dagger/issues/3356

Exception when running instrumented tests with Hilt and App Startup · Issue #3356 · google/dagger

따끈따끈한 이슈...
근데 사실 1년 전에도 제기된 적 있습니다.
https://github.com/google/dagger/issues/2016#issuecomment-788770446

Hilt: handle Services with injection automatically started in instrumentation tests · Issue #2016 · google/dagger

이슈가 생성됐으니 해결을 해야죠! 해당 에러를 해결한 dagger 2.42가 어제 출시되었습니다. 빠르네요!
https://github.com/google/dagger/releases/tag/dagger-2.42

Release Dagger 2.42 · google/dagger

근데 간단한 샘플 앱에서는 문제가 해결되는 반면, 실제 앱에 적용하니 여전히 문제가 지속됩니다. 근본적인 문제는 startup의 초기화 시점과 관련이 있기 때문에... 일단은 dagger 팀에서 androidx.startup 팀에 이슈트래커를 남겨놓았습니다.
https://issuetracker.google.com/issues/230844558

Google Issue Tracker

따라서 androidx.startup이 새 버전으로 릴리즈 되고, 안정화 되기 전까지는 보류해야 하는 문제입니다...

교훈: 다들 AndroidTest를 사용하지 않는다!