How useful is the Add Fakes Assembly feature?

Besides utility, how can we implement it?

I did not find documentation in Portuguese that would clarify this functionality much less examples of how to apply it.

Do you know what a Fake is? You have documentation about the subject .

So by adding this assembly it is enabling the project to be testable with a mechanism that simulates the more complex mechanisms that are not suitable to run during a test through mocks and shims .