[Android]some mocking features work only on Android P+

One of my colleagues told me Mockk. The library is pure Kotlin mocking library. An interesting thing for me is Android instrumentation support.

I had a question when I saw that why Android P was a limitation. Since it provide mocking feature for final classes / objects in instrumentation tests.

I investigated a bit and I found interesting issues. So I left them here for my note.

Mokito

• mockito-android cannot copy hidden fields and call hidden methods of Android P system classeshttps://github.com/mockito/mockito/issues/1395

Dexmaker

• https://github.com/linkedin/dexmaker/issues/97
• https://github.com/linkedin/dexmaker/issues/103
• Why the mockings work on Android P+

• • https://github.com/linkedin/dexmaker/issues/103#issuecomment-387111808

 

BTW, Dexmaker has been provided mocking final classes/methods with Mokito on Android P. We can use the feature with below.

• Add androidTestImplementation dexmaker-mockito-inline instead of dexmaker-mockito
  • Read https://github.com/linkedin/dexmaker#mocking-final-classes–methods

Thanks for the fixing and improvements.