Hi and welcome to team Gilded Rose. As you know, we are a small inn with a prime location in a prominent city ran by a friendly innkeeper named Allison. We also buy and sell only the finest goods. Unfortunately, our goods are constantly degrading in quality as they approach their sell by date. We have a system in place that updates our inventory for us. It was developed by a no-nonsense type named Leeroy, who has moved on to new adventures. Your task is to add the new feature to our system so that we can begin selling a new category of items. First an introduction to our system:
- All items have a
sellIn
value which denotes the number of days we have to sell the item - All items have a
quality
value which denotes how valuable the item is - At the end of each day our system lowers both values for every item.
Pretty simple, right? Well this is where it gets interesting:
- Once the
sellIn
date has passed,quality
degrades twice as fast - The
quality
of an item is never negative - "Aged Brie" actually increases in
quality
the older it gets - The
quality
of an item is never more than 50 - "Sulfuras", being a legendary item, never has to be sold or decreases
in
quality
- "Backstage passes", like aged brie, increases in
quality
as itssellIn
value approaches;quality
increases by 2 when there are 10 days or less and by 3 when there are 5 days or less butquality
drops to 0 after the concert
We have recently signed a supplier of conjured items. This requires an update to our system:
- "Conjured" items degrade in
quality
twice as fast as normal items
Feel free to make any changes to the updateQuality
method and add any
new code as long as everything still works correctly. However, do not
alter the Item
class or items
property as those belong to the goblin
in the corner who will insta-rage and one-shot you as he doesn't
believe in shared code ownership.
Just for clarification, an item can never have its quality
increase
above 50, however "Sulfuras" is a legendary item and as such its
quality
is 80 and it never alters.
Clone the repository. Run ./gradlew test
from your shell. If you see
output similar to the following screenshot, you are ready to
start refactoring.
Who: @structFooBar
What & Why: Refactor This: The Gilded Rose Kata
Authors:
- this work: @structFooBar
- original work: @TerryHughes, @NotMyself
Repositories:
- this project: https://github.com/Drako/KotlinGildedRose
- original project: https://github.com/NotMyself/GildedRose