Update indexTest

Author: Steven G. Harms

test/indexTest.js

@@ -1,16 +1,15 @@
+const sinon = require('sinon');
 
+describe("index.js", () => {
+  let input;
 
-describe("index.html", () => {
-  it("includes div", () => {
-    expect(document.querySelector('body').innerHTML).to.include('<div>')
+  beforeEach(function() {
+    input = document.getElementById('input');
+    sinon.spy(input, 'addEventListener');
   })
-})
 
-
-describe("index.js", () => {
-  it("has each codealong function", () => {
-    expect(addingEventListener).to.exist
-    expect(preventingDefault).to.exist
-    expect(stoppingPropagation).to.exist
+  it("binds an event listener in addingEventListener()", () => {
+    addingEventListener();
+    expect(input.addEventListener.called).to.be.true;
   })
 })