adding conjured rules with test

TypeScript/app/gilded-rose.ts

@@ -1,3 +1,16 @@
+export const RULES = [
+  {
+    name: "Aged Brie",
+    qualityPerDay: 1,
+    staticQuality: undefined,
+  },
+  {
+    name: "Backstage passes to a TAFKAL80ETC concert",
+    qualityPerDay: 1,
+    staticQuality: undefined,
+  }
+]
+
 export class Item {
   name: string;
   sellIn: number;
@@ -19,49 +32,42 @@ export class GildedRose {
 
   updateQuality() {
     for (let i = 0; i < this.items.length; i++) {
-      if (this.items[i].name != 'Aged Brie' && this.items[i].name != 'Backstage passes to a TAFKAL80ETC concert') {
-        if (this.items[i].quality > 0) {
-          if (this.items[i].name != 'Sulfuras, Hand of Ragnaros') {
-            this.items[i].quality = this.items[i].quality - 1
+      switch (this.items[i].name) {
+        case 'Aged Brie':
+          if (this.items[i].quality < 50) {
+            this.items[i].quality += 1
           }
-        }
-      } else {
-        if (this.items[i].quality < 50) {
-          this.items[i].quality = this.items[i].quality + 1
-          if (this.items[i].name == 'Backstage passes to a TAFKAL80ETC concert') {
-            if (this.items[i].sellIn < 11) {
-              if (this.items[i].quality < 50) {
-                this.items[i].quality = this.items[i].quality + 1
-              }
-            }
-            if (this.items[i].sellIn < 6) {
-              if (this.items[i].quality < 50) {
-                this.items[i].quality = this.items[i].quality + 1
-              }
-            }
+          break;
+        case 'Backstage passes to a TAFKAL80ETC concert':
+          if (this.items[i].sellIn < 0) {
+            this.items[i].quality = 0
+          } else if (this.items[i].sellIn < 6) {
+            this.items[i].quality += 3
+          } else if (this.items[i].sellIn < 11) {
+            this.items[i].quality += 2
+          } else {
+            this.items[i].quality += 1
+          }
+          if (this.items[i].quality > 50) {
+            this.items[i].quality = 50
+          }
+          break;
+        case 'Sulfuras, Hand of Ragnaros':
+          this.items[i].quality = 80
+          break;
+        case 'Conjured Mana Cake':
+          if (this.items[i].quality > 0) {
+            this.items[i].quality -= 2
+          }
+          break;
+        default:
+          if (this.items[i].quality > 0) {
+            this.items[i].quality -= 1
           }
-        }
       }
       if (this.items[i].name != 'Sulfuras, Hand of Ragnaros') {
         this.items[i].sellIn = this.items[i].sellIn - 1;
       }
-      if (this.items[i].sellIn < 0) {
-        if (this.items[i].name != 'Aged Brie') {
-          if (this.items[i].name != 'Backstage passes to a TAFKAL80ETC concert') {
-            if (this.items[i].quality > 0) {
-              if (this.items[i].name != 'Sulfuras, Hand of Ragnaros') {
-                this.items[i].quality = this.items[i].quality - 1
-              }
-            }
-          } else {
-            this.items[i].quality = this.items[i].quality - this.items[i].quality
-          }
-        } else {
-          if (this.items[i].quality < 50) {
-            this.items[i].quality = this.items[i].quality + 1
-          }
-        }
-      }
     }
 
     return this.items;

TypeScript/test/jest/gilded-rose.spec.ts

@@ -1,9 +1,39 @@
 import { Item, GildedRose } from '@/gilded-rose';
 
 describe('Gilded Rose', () => {
-  it('should foo', () => {
-    const gildedRose = new GildedRose([new Item('foo', 0, 0)]);
+  it('test: Aged Brie', () => {
+    const gildedRose = new GildedRose([new Item('Aged Brie', 5, 5)]);
     const items = gildedRose.updateQuality();
-    expect(items[0].name).toBe('fixme');
+    expect(items[0].name).toBe('Aged Brie');
+    expect(items[0].sellIn).toBe(4);
+    expect(items[0].quality).toBe(6);
+  });
+  it('test: Backstage passes to a TAFKAL80ETC concert', () => {
+    const gildedRose = new GildedRose([new Item('Backstage passes to a TAFKAL80ETC concert', 5, 5)]);
+    const items = gildedRose.updateQuality();
+    expect(items[0].name).toBe('Backstage passes to a TAFKAL80ETC concert');
+    expect(items[0].sellIn).toBe(4);
+    expect(items[0].quality).toBe(8);
+  });
+  it('test: Sulfuras, Hand of Ragnaros', () => {
+    const gildedRose = new GildedRose([new Item('Sulfuras, Hand of Ragnaros', 5, 80)]);
+    const items = gildedRose.updateQuality();
+    expect(items[0].name).toBe('Sulfuras, Hand of Ragnaros');
+    expect(items[0].sellIn).toBe(5);
+    expect(items[0].quality).toBe(80);
+  });
+  it('test: Conjured Mana Cake', () => {
+    const gildedRose = new GildedRose([new Item('Conjured Mana Cake', 5, 5)]);
+    const items = gildedRose.updateQuality();
+    expect(items[0].name).toBe('Conjured Mana Cake');
+    expect(items[0].sellIn).toBe(4);
+    expect(items[0].quality).toBe(3);
+  });
+  it('test: Elixir of the Mongoose', () => {
+    const gildedRose = new GildedRose([new Item('Elixir of the Mongoose', 5, 5)]);
+    const items = gildedRose.updateQuality();
+    expect(items[0].name).toBe('Elixir of the Mongoose');
+    expect(items[0].sellIn).toBe(4);
+    expect(items[0].quality).toBe(4);
   });
 });