Fixed tests and brought test module naming in line with conventions.

src/core/operations/Code.js

@@ -2,7 +2,7 @@ import Utils from "../Utils.js";
 import vkbeautify from "vkbeautify";
 import {DOMParser as dom} from "xmldom";
 import xpath from "xpath";
-import prettyPrintOne from "exports-loader?prettyPrintOne!google-code-prettify/bin/prettify.min.js";
+import prettyPrintOne from "imports-loader?window=>global!exports-loader?prettyPrintOne!google-code-prettify/bin/prettify.min.js";
 
 
 /**

src/node/index.js

@@ -5,6 +5,7 @@
  * @copyright Crown Copyright 2017
  * @license Apache-2.0
  */
+import "babel-polyfill";
 
 var Chef = require("../core/Chef.js").default;