Testing Private method using mockito

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Not possible through mockito. From their wiki

Why Mockito doesn’t mock private methods?

Firstly, we are not dogmatic about mocking private methods. We just
don’t care about private methods because from the standpoint of
testing private methods don’t exist. Here are a couple of reasons
Mockito doesn’t mock private methods:

It requires hacking of classloaders that is never bullet proof and it
changes the api (you must use custom test runner, annotate the class,
etc.).

It is very easy to work around – just change the visibility of method
from private to package-protected (or protected).

It requires me to spend time implementing & maintaining it. And it
does not make sense given point #2 and a fact that it is already
implemented in different tool (powermock).

Finally… Mocking private methods is a hint that there is something
wrong with OO understanding. In OO you want objects (or roles) to
collaborate, not methods. Forget about pascal & procedural code. Think
in objects.

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