Test Doubles: in theory, in Minitest and in RSpec
Those of us that do Test Driven Development have heard about doubles, mocks, stubs, fakes and spies multiple times. Unfortunately there is a ton of confusion about all these words and their meaning. Let’s see what each an every one of these really mean, where we should use them and how the popular testing frameworks for Ruby implement these. Test Doubles So, first things first. One of the biggest misconceptions is that doubles are types of objects that are used in testing....