added test to check if the div exists and if it contains the proper classes

Author: UmiKami

exercises/04.2-Apply-several-classes/test.js

@@ -0,0 +1,24 @@
+const fs = require("fs");
+const path = require("path");
+const html = fs.readFileSync(path.resolve(__dirname, './index.html'), 'utf8');
+document.documentElement.innerHTML = html.toString();
+
+jest.dontMock("fs");
+
+describe("You should change the class on the div tag", () => {
+    const div = document.querySelectorAll("div")
+    test("There should only be 1 div tag", () => {
+        expect(div.length).toBe(1)
+    });
+
+    test("The div class should NOT have the spades class", () => {
+        div.forEach(e=>{
+            expect(e.classList.contains("spade")).toBe(false) 
+        })
+    });
+    test("The div class should have the heart class", () => {
+        div.forEach(e=>{
+            expect(e.classList.contains("heart")).toBe(true) 
+        })
+    });
+});