Workshop - Tests + Conjured system update

app/gilded-rose.ts

@@ -62,6 +62,9 @@ export class GildedRose {
                     }
                 }
             }
+            if (this.items[i].name == 'Conjured') {
+                this.items[i].quality -= 1;
+            }
         }
 
         return this.items;

package.json

@@ -22,8 +22,8 @@
     "rimraf": "~3.0.2",
     "source-map-support": "^0.5.20",
     "ts-jest": "^27.0.7",
-    "ts-node": "^10.4.0",
+    "ts-node": "^10.9.2",
     "tsconfig-paths": "^3.11.0",
-    "typescript": "^4.4.4"
+    "typescript": "^4.9.5"
   }
 }

test/jest/gilded-rose.spec.ts

@@ -9,7 +9,7 @@ describe('Gilded Rose', () => {
         const items = gildedRose.updateQuality();
 
         // Assert
-        expect(items[0].name).toBe('bar');
+        expect(items[0].name).toBe('foo');
     });
 
     it('sword quality drops by 1', () => {
@@ -20,6 +20,127 @@ describe('Gilded Rose', () => {
       const items = gildedRose.updateQuality();
 
       // Assert
-      expect(items[0].quality).toBe(1);
-    })
+      expect(items[0].quality).toBe(0);
+    });
+
+    it('Quality never negative', () => {
+      // Arrange
+      const gildedRose = new GildedRose([new Item('Bad item', 5, 0)]);
+
+      // Act
+      const items = gildedRose.updateQuality();
+
+      // Assert
+      expect(items[0].quality).toBe(0);
+    });
+
+    it('Backstage passes quality increase 2', () => {
+      // Arrange
+      const gildedRose = new GildedRose([new Item('Backstage passes to a TAFKAL80ETC concert', 10, 5)]);
+
+      // Act
+      const items = gildedRose.updateQuality();
+
+      // Assert
+      expect(items[0].quality).toBe(7);
+    });
+
+    it('Backstage passes quality increase 3', () => {
+      // Arrange
+      const gildedRose = new GildedRose([new Item('Backstage passes to a TAFKAL80ETC concert', 3, 5)]);
+
+      // Act
+      const items = gildedRose.updateQuality();
+
+      // Assert
+      expect(items[0].quality).toBe(8);
+    });
+
+    it('Aged Brie quality increase', () => {
+      // Arrange
+      const gildedRose = new GildedRose([new Item('Aged Brie', 10, 5)]);
+
+      // Act
+      const items = gildedRose.updateQuality();
+
+      // Assert
+      expect(items[0].quality).toBe(6);
+    });
+
+    it('Age Brie quality increase doubles (sellin day passed)', () => {
+      // Arrange
+      const gildedRose = new GildedRose([new Item('Aged Brie', -10, 50)]);
+
+      // Act
+      const items = gildedRose.updateQuality();
+
+      // Assert
+      expect(items[0].quality).toBe(50);
+    });
+
+    it('Sellin day passed degrade double', () => {
+      // Arrange
+      const gildedRose = new GildedRose([new Item('Sword', -1, 5)]);
+
+      // Act
+      const items = gildedRose.updateQuality();
+
+      // Assert
+      expect(items[0].quality).toBe(3);
+    });
+
+    it('Sulfuras quality does not alter', () => {
+      // Arrange
+      const gildedRose = new GildedRose([new Item('Sulfuras, Hand of Ragnaros', -10, 80)]);
+
+      // Act
+      const items = gildedRose.updateQuality();
+
+      // Assert
+      expect(items[0].quality).toBe(80);
+    });
+
+    it('Backstage passes sellin day passed quality drops to 0', () => {
+      // Arrange
+      const gildedRose = new GildedRose([new Item('Backstage passes to a TAFKAL80ETC concert', 0, 10)]);
+
+      // Act
+      const items = gildedRose.updateQuality();
+
+      // Assert
+      expect(items[0].quality).toBe(0);
+    });
+
+    it('No item in', () => {
+      // Arrange
+      const gildedRose = new GildedRose([]);
+
+      // Act
+      const items = gildedRose.updateQuality();
+
+      // Assert
+      expect(items).toStrictEqual([]);
+    });
+
+    it('Conjured items - System not updated', () => {
+      // Arrange
+      const gildedRose = new GildedRose([new Item('Conjured', 5, 10)]);
+
+      // Act
+      const items = gildedRose.updateQuality();
+
+      // Assert
+      expect(items[0].quality).toBe(9);
+    });
+
+    it('Conjured items - System updated', () => {
+      // Arrange
+      const gildedRose = new GildedRose([new Item('Conjured', 5, 10)]);
+
+      // Act
+      const items = gildedRose.updateQuality();
+
+      // Assert
+      expect(items[0].quality).toBe(8);
+    });
 });