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Ruby specific setup for Gilded Rose kata run as a workshop at Prodigy on 2017/09/19

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Gilded Fritz

Easy Ruby set up for gilded rose kata to be used in a 1 hour workshop at Prodigy Finance.

Check out this repo, and read the section below: Gilded Rose Requirements Specification. The code is working, but the conjured item requirement at the end is not yet satisfied.

Gilded Rose Requirements Specification

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 sell by 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 its SellIn value approaches;
Quality increases by 2 when there are 10 days or less and by 3 when there are 5 days or less but
Quality 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 as it belongs 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.

Changes from the original

See the original here: https://github.com/emilybache/GildedRose-Refactoring-Kata

I made the following changes:

  • Ruby version only
  • RSpec only
  • Added a branch start-from-specs with pre-written specs for those who just want to get started refactoring. This is unrealistic (why would such bad code have useful specs?) but it allows us to get to the "let's make this code better" step faster.
  • The TextTests included with the original are excluded because I found it a pain to install TextTest and getting 30 devs to install before starting going to be chaos.
  • Moved requirements text file into the README.md

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Ruby specific setup for Gilded Rose kata run as a workshop at Prodigy on 2017/09/19

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