Ruby Refactoring Kata - Tennis Game

Ruby Refactoring: Replace Conditional with Polymorphism + Replace Object Creation with Factory

Ruby Refactoring: Remove the FooOrBar smell + Extract Rules objects

Ruby Refactoring: Replace cryptic boolean predicates with english-like sentences

Ruby Refactoring: Before fixing a bug, write a test first

Ruby Refactoring: Fixing a bug by passing new Parameters

Ruby Refactoring: Introduce Parameter Object

Ruby Refactoring: Reduce the number of Parameters needed

Ruby Refactoring: Code cleanups don’t have to be boring

Ruby Refactoring: The analysis of tests as a preparation to a bigger redesign

Ruby Refactoring: Delete your code and TDD it again

After Red/Green comes the Refactor phase

The code is telling me to use CQRS

When to split code into more files?

Fear of adding classes

A different way of formatting Ruby code

Refactor code to data

Fixing a bug by using Ruby String interpolation (in a way you may not know yet)

I don't have 100% test coverage - is it a big deal?