fix: added some test cases

js-jest/test/gilded_rose.test.js

@@ -1,9 +1,96 @@
-const {Shop, Item} = require("../src/gilded_rose");
+const { Shop, Item } = require("../src/gilded_rose");
 
-describe("Gilded Rose", function() {
-  it("should foo", function() {
-    const gildedRose = new Shop([new Item("foo", 0, 0)]);
-    const items = gildedRose.updateQuality();
-    expect(items[0].name).toBe("fixme");
+const gildedRose = new Shop([
+  new Item("+5 Dexterity Vest", 10, 20),
+  new Item("Aged Brie", 2, 0),
+  new Item("Sulfuras, Hand of Ragnaros", 0, 35),
+  new Item("Backstage passes to a TAFKAL80ETC concert", 15, 20),
+  new Item("Backstage passes to a TAFKAL80ETC concert", 10, 45),
+  new Item("Backstage passes to a TAFKAL80ETC concert", 5, 32),
+  new Item("Conjured Mana Cake", 3, 6),
+  new Item("Expired Pears", -1, 11),
+  new Item("Overpriced Trinket", 10, 55),
+  new Item("Conjured Mana Cake", -3, 6),
+]);
+
+const items = gildedRose.updateQuality();
+
+describe("After one updateQuality call", function () {
+
+  it("Miscellaneous item should have decremented sellIn by 1", function () {
+    expect(items[0].sellIn).toBe(9);
+  });
+
+  it("Miscellaneous item should have decremented quality by 1", function () {
+    expect(items[0].quality).toBe(19);
+  });
+
+  it("Expired item should have decremented quality by 2", function () {
+    expect(items[7].quality).toBe(9);
+  });
+
+  it("Overpriced item should have reset quality to 50", function () {
+    expect(items[8].quality).toBe(50);
+  });
+
+});
+
+describe("After one updateQuality call, Aged Brie", function () {
+  it("should have decremented sellIn by 1", function () {
+    expect(items[1].sellIn).toBe(1);
+  });
+
+  it("should have incremented quality by 1", function () {
+    expect(items[1].quality).toBe(1);
   });
 });
+
+describe("After one updateQuality call, Sulfuras", function () {
+  it("should have same sellIn", function () {
+    expect(items[2].sellIn).toBe(0);
+  });
+
+  it("should have same quality", function () {
+    expect(items[2].quality).toBe(35);
+  });
+});
+
+describe("After one updateQuality call", function () {
+  it("First backstage pass should have decremented sellIn by 1", function () {
+    expect(items[3].sellIn).toBe(14);
+  });
+
+  it("First backstage pass should have incremented quality by 1", function () {
+    expect(items[3].quality).toBe(21);
+  });
+
+  it("Second backstage pass should have decremented sellIn by 1", function () {
+    expect(items[4].sellIn).toBe(9);
+  });
+
+  it("Second backstage pass should have incremented quality by 2", function () {
+    expect(items[4].quality).toBe(47);
+  });
+
+  it("Third backstage pass should have decremented sellIn by 1", function () {
+    expect(items[5].sellIn).toBe(4);
+  });
+
+  it("Third backstage pass should have incremented quality by 3", function () {
+    expect(items[5].quality).toBe(35);
+  });
+});
+
+describe("After one updateQuality call, Conjured item", function () {
+  it("should have decremented sellIn by 1", function () {
+    expect(items[6].sellIn).toBe(2);
+  });
+
+  it("should have decremented quality by 2", function () {
+    expect(items[6].quality).toBe(4);
+  });
+
+  it("should have decremented quality by 4 if expired", function () {
+    expect(items[9].quality).toBe(2);
+  });
+});