We recently ran a legacy code retreat based on your format. People were questioning the value of subclass-to-test in a real world scenario. The best reason I could come up with for myself was that it’s a smaller step to separating out responsibilities from a class. How would you frame the value of subclass-to-test, and in which contexts would you use it? I view Subclass to Test as an intermediate step towards other refactorings like Replace Inheritance with Delegation, Introduce Named Const...
