jmetzz / GildedRose

Gilded Rose Pair Programming Technical Test

Hi and welcome to team Gilded Rose! 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 an inventory system in place, it takes care of updating our inventory on a daily basis for us. And, as our new Senior Developer you will be in charge of maintaining and extending it.

Requirements

We're planning on expanding our business and offering many new categories of items in the future and we'd like you to update our system to make it easier to maintain and support new item categories. As the first stage of our expansion we're planning on selling a new category of Conjured items (they have the word "conjured" in the name). Your task is to:

• Update our system to support Conjured items.
• Make any improvements to the existing code you deem necessary to support our expansion.

System Rules and Constraints

Our inventory system has the following main rules:

• All items have a sell_in value which denotes the number of days we have left to sell the item (akin to a countdown to a "sell by" date).
• All items have a quality value which denotes how valuable the item is.
• At the end of each day the system lowers both sell_in and quality for every item.

Some items have special rules that apply only to them. Here are some of them that have been provided by from our helpful Product Manager:

• 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, nor does it decrease in Quality.

This new category of item we plan on selling also has its own special rule:

• Conjured items degrade in quality twice as fast as normal items.

Due to shortsightedness we can't modify the Item class or any of its properties. As its shared with other internal systems and we need to maintain interoperability with them. Feel free to make any changes to the GildedRose class and add any new code as long as everything still works correctly.