Added testing and auto-testing with selenium

TestSelenium.js

@@ -0,0 +1,30 @@
+'use strict';
+const WebDriver = require("selenium-webdriver");
+
+let driver;
+if (process.env.SAUCE_USERNAME != undefined) {
+    driver = new WebDriver.Builder().usingServer(
+        'http://'+ process.env.SAUCE_USERNAME+':'+process.env.SAUCE_ACCESS_KEY+'@ondemand.saucelabs.com:80/wd/hub'
+    ).withCapabilities({
+        "tunnel-identifier": process.env.TRAVIS_JOB_NUMBER,
+        "build": process.env.TRAVIS_BUILD_NUMBER,
+        "username": process.env.SAUCE_USERNAME,
+        "accessKey": process.env.SAUCE_ACCESS_KEY,
+        "browserName": "chrome"
+    }).build();
+} else {
+    driver = new WebDriver.Builder().withCapabilities({ browserName: "chrome" }).build();
+}
+
+driver.get('http://localhost:3000/assert/');
+const report = driver.wait(WebDriver.until.elementLocated(WebDriver.By.className("report")), 5000);
+report.getAttribute("class").then(function (cls) {
+    driver.quit();
+    if (!cls) {
+        throw new Error("cls is null");
+    } else if (cls.indexOf("failure") !== -1) {
+        throw new Error("cls contains the word failure");
+    } else if (cls.indexOf("success") === -1) {
+        throw new Error("cls does not contain the word success");
+    }
+});