Too Long; Didn't Read
NSubstitute(https://://github.com/nsubstitute/Nsubstitute) is definitely a good to be used instead of classic Mook. It has way more nicer API, I can't stop recommending it to my friends. Faking data almost every time I write a test I have to fake some data for it. There are a special libraries which can do better). Addressees or people names, phone numbers and more. They cat take that pain work from you.