升级到Android Gradle 2.2.0插件后，使用Dagger 2进行Espresso测试中的ClassCastException

Question

Since updating to the Android 2.2.0 Gradle plugin, my Espresso tests have started failing with the following error:

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myapp.app.debug/com.myapp.app.conversation.ConversationActivity}: java.lang.ClassCastException: com.myapp.app.conversation.data.SqlMessageStore cannot be cast to com.myapp.app.auth.UserScopedAccountStore
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.ClassCastException: com.myapp.app.conversation.data.SqlMessageStore cannot be cast to com.myapp.app.auth.UserScopedAccountStore
at com.myapp.app.di.module.UserModule_UserScopedAccountStoreFactory.get(UserModule_UserScopedAccountStoreFactory.java:30)
at com.myapp.app.di.module.UserModule_UserScopedAccountStoreFactory.get(UserModule_UserScopedAccountStoreFactory.java:10)
at dagger.internal.DoubleCheck.get(DoubleCheck.java:47)
at com.myapp.app.di.module.UserModule_TokenInterceptorFactory.get(UserModule_TokenInterceptorFactory.java:30)
at com.myapp.app.di.module.UserModule_TokenInterceptorFactory.get(UserModule_TokenInterceptorFactory.java:10)
at dagger.internal.DoubleCheck.get(DoubleCheck.java:47)
at com.myapp.app.di.module.UserModule_AuthedOkHttpClientFactory.get(UserModule_AuthedOkHttpClientFactory.java:30)
at com.myapp.app.di.module.UserModule_AuthedOkHttpClientFactory.get(UserModule_AuthedOkHttpClientFactory.java:10)
at dagger.internal.DoubleCheck.get(DoubleCheck.java:47)
at com.myapp.app.di.module.UserModule_HipChatClientFactory.get(UserModule_HipChatClientFactory.java:81)
at com.myapp.app.di.module.UserModule_HipChatClientFactory.get(UserModule_HipChatClientFactory.java:17)
at dagger.internal.DoubleCheck.get(DoubleCheck.java:47)
at com.myapp.app.di.module.UserModule_LogoutFactory.get(UserModule_LogoutFactory.java:29)
at com.myapp.app.di.module.UserModule_LogoutFactory.get(UserModule_LogoutFactory.java:10)
at dagger.internal.DoubleCheck.get(DoubleCheck.java:47)
at com.myapp.app.di.module.UserModule_SignedInPresenterFactory.get(UserModule_SignedInPresenterFactory.java:69)
at com.myapp.app.di.module.UserModule_SignedInPresenterFactory.get(UserModule_SignedInPresenterFactory.java:16)
at com.myapp.app.BaseSignedInActivity_MembersInjector.injectPresenter(BaseSignedInActivity_MembersInjector.java:44)
at com.myapp.app.conversation.ConversationActivity_MembersInjector.injectMembers(ConversationActivity_MembersInjector.java:40)
at com.myapp.app.conversation.ConversationActivity_MembersInjector.injectMembers(ConversationActivity_MembersInjector.java:9)
at com.myapp.app.di.DaggerUserComponent.inject(DaggerUserComponent.java:993)
at com.myapp.app.conversation.ConversationActivity.inject(ConversationActivity.java:149)
at com.myapp.app.BaseSignedInActivity.onCreate(BaseSignedInActivity.java:59)
at com.myapp.app.conversation.ConversationActivity.onCreate(ConversationActivity.java:57)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.support.test.runner.MonitoringInstrumentation.callActivityOnCreate(MonitoringInstrumentation.java:532)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
... 10 more

Running the app works completely fine. Changing this back to the Android 2.1.3 Gradle plugin fixes the espresso problems (with no other changes). I've attempted cleaning, rebuilding, and restarting the gradle daemon to no avail. I also tried updating to 2.2.1 and bumping to the latest Dagger 2 version (2.7).

Answer 1

Is it possible you have duplicate dependencies? Try using compileOnly instead of compile for test dependencies.