What to read about testing in JavaScript?

Question

JavaScript

Hello. Tell me what to read (articles, literature) to "drive" into the essence of mocks, spy's, stubs and testing in js in general?

Answer 1

JavaScript Testing

Answer 2

nightwatchjs.org

Answer 3

https://nirajrules.wordpress.com/2011/08/27/dummy-...
stackoverflow.com/questions/24413184/can-someone-e...