Gilded Rose Refactoring Kata

Practicing Emily Bache's Gilded Rose kata

Goal

The goal is to practice Kotlin, the language.

Technical notes

• The kata is not complete, it is missing to separate the behaviour for updating quality to the specific Item, rather than at the GildedRose element
• Using a gradle wrapper (gradlew)
• Keeping the data class Item but decorating it with the MyItem
  • MyItem encapsulates the business logic (e.g., increasing and decreasing quality, decreasing expiry date)
  • MyItem has a method to expose the decorated class Item
• The distinct items have been coded using polymorphism plus a factory (in the object ItemFactory) that decides which item to create. This pattern violates the OCP, as adding a new Item type requires to modify (not to extend) the factory. I've decided that this level of complexity is enough for the case at hand
• Have created unit tests for the behaviour
• The unit tests use method names with spaces (a kotlin feature), but only for test names. Not in production.