Added a testSetup file to configure Mocha, added scripts to the package.json file to execute Mocha, and added a couple of example unit tests - to exercise Mocha and JSDOM

Author: kevinjdonohue

buildScripts/testSetup.js

@@ -0,0 +1,7 @@
+// This file isn't transpiled, so must use CommonJS and ES5
+
+// Register babel to transpile before our tests run
+require('babel-register')();
+
+// Disable webpack features that Mocha doesn't understand
+require.extensions['.css'] = function() {};

package.json

@@ -4,13 +4,15 @@
   "description": "JavaScript development environment Pluralsight course by Cory House",
   "scripts": {
     "prestart": "babel-node buildScripts/startMessage.js",
-    "start":"npm-run-all --parallel security-check open:src lint:watch",
+    "start":"npm-run-all --parallel security-check open:src lint:watch test:watch",
     "open:src": "babel-node buildScripts/srcServer.js",
     "lint": "esw webpack.config.* src buildScripts --color",
     "lint:watch": "npm run lint -- --watch",
     "security-check": "nsp check",
     "localtunnel": "lt --port 3000 --subdomain kevin",
-    "share": "npm-run-all --parallel open:src localtunnel"
+    "share": "npm-run-all --parallel open:src localtunnel",
+    "test": "mocha --reporter progress buildScripts/testSetup.js \"src/**/*.test.js\"",
+    "test:watch": "npm test -- --watch"
   },
   "author": "Cory House",
   "license": "MIT",

src/index.test.js

@@ -0,0 +1,21 @@
+import {expect} from 'chai';
+import jsdom from 'jsdom';
+import fs from 'fs';
+
+describe('Our first test', function() {
+  it('should pass', function() {
+    expect(true).to.equal(true);
+  });
+});
+
+describe('index.html', function() {
+  it('should say hello', function(done) {
+    const index = fs.readFileSync('./src/index.html', 'utf-8');
+    jsdom.env(index, function(err, window) {
+      const h1 = window.document.getElementsByTagName('h1')[0];
+      expect(h1.innerHTML).to.equal("Hello World!!!");
+      done();
+      window.close();
+    });
+  });
+});