finished testing for backstage passes

TypeScript/test/gilded-rose.spec.ts

@@ -1,6 +1,8 @@
 import { expect } from 'chai';
 import { Item, GildedRose } from '../app/gilded-rose';
 
+
+// General Tests to ensure it works for newly created item
 describe('Gilded Rose', function () {
 
     it('should foo', function() {
@@ -29,6 +31,37 @@ describe('Gilded Rose', function () {
     });
 });
 
+// tests to check if specific items work correctly 
+
+describe('Backstage Pass', function () {
+    it('Backstage pass should increase in quality by 2 with only 10 days left', function () {
+        const gildedRose = new GildedRose ([ new Item('Backstage passes to a TAFKAL80ETC concert', 10, 5)]);
+        const items = gildedRose.updateQuality();
+        expect(items[0].quality).to.equal(7);
+    })
+})
+
+describe('Backstage Pass', function () {
+    it('Backstage pass should increase in quality by 3 with 5 days left', function () {
+        const gildedRose = new GildedRose ([ new Item('Backstage passes to a TAFKAL80ETC concert', 5, 5)]);
+        const items = gildedRose.updateQuality();
+        expect(items[0].quality).to.equal(8);
+    })
+})
 
 
+describe('Backstage Pass', function () {
+    it('Backstage pass should increase in quality by 3, but quality is at 49', function () {
+        const gildedRose = new GildedRose ([ new Item('Backstage passes to a TAFKAL80ETC concert', 4, 49)]);
+        const items = gildedRose.updateQuality();
+        expect(items[0].quality).to.equal(50);
+    })
+})
 
+describe('Backstage Pass', function () {
+    it('Backstage pass quality should drop to 0 after concert', function () {
+        const gildedRose = new GildedRose ([ new Item('Backstage passes to a TAFKAL80ETC concert', 0, 50)]);
+        const items = gildedRose.updateQuality();
+        expect(items[0].quality).to.equal(0);
+    })
+})