The purpose of this project is to serve as a training ground for working with legacy code.
After cloning the repository, make sure you have the Java Development Kit installed and added to the path environment variable. If so then you can run the following commands:
./gradlew idea
to generate the IntelliJ IDEA project which you can later open./gradlew run
to run themain
method from command line./gradlew test
to run all the tests./gradlew jacoco
to generate the test code coverage report./gradlew appCodeCoverage
to generate the application code coverage report./gradlew pitest
to generate the mutation test coverage report
After running any of the last 4 commands check the build/reports
directory.
When ready to do the kata read the instructions below and open the
GildedRoseTest
class.
Good luck!
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.
- 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:
- The
quality
of an item is never negative - The
quality
of an item is never more than 50 - Once the sell by date has passed,
quality
degrades twice as fast - Aged Brie actually increases in
quality
the older it gets - Sulfuras, being a legendary item, never has to be sold or decreases in
quality
- Backstage passes, like aged brie, increases in
quality
as it’ssellIn
value approaches;quality
increases by 2 when there are 10 days or less and by 3 when there are 5 days or less but 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
field 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 (you can make the updateQuality
method and
items
field static if you like, we’ll cover for you).