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Installing Grub fails on Ubuntu 16.04

I got this nasty error when it came to having a fresh install of Ubuntu 16.04. It says that GRUB cannot be installed on /target device. In order to fix this you need to:...


Mockito anyString() vs any() – null handling

Sometimes, when I mock a method in Mockito, I used anyString instead of any and I get into a mess and my test fails. Why? given(mUserRepo.getUser(anyString(). any())).willReturn(new User()); And what will happen if mUserRepo.getUser(null);...


.blockingGet & AndroidSchedulers.mainThread() make the app stuck

Recently, I had a very strange problem to debug. I had the following interactor: public class GetUserUpdatesInteractor { private final UserRepository mUserRepository; private final InteractorSchedulers mSchedulers; @Inject public GetUserUpdatesInteractor(UserRepository userRepository, InteractorSchedulers schedulers) { mUserRepository...