Fix tests

src/utils/Browser.js

@@ -11,8 +11,9 @@
 
 import { contains } from './Generic.js';
 
-let userAgent = navigator.userAgent;
-let platform = navigator.platform;
+let isNode = (typeof navigator == 'undefined') ? true : false;
+let userAgent = (isNode) ? 'node' : navigator.userAgent;
+let platform = (isNode) ? 'node' : navigator.platform;
 
 export let isFirefox = !!~userAgent.indexOf('Firefox');
 export let isMSIE = !!~userAgent.indexOf('MSIE');
@@ -20,7 +21,7 @@ export let isMSIE = !!~userAgent.indexOf('MSIE');
 // Find the users platform. We use this to interpret the meta key
 // and ISO third level shifts.
 // http://stackoverflow.com/q/19877924/577598
-export let isMac = contains(platform, ['Macintosh', 'MacIntel', 'MacPPC', 'Mac68K']);
+export let isMac = contains(['Macintosh', 'MacIntel', 'MacPPC', 'Mac68K'], platform);
 export let isIpad = platform === 'iPad';
 export let isIphone = platform === 'iPhone';
-export let isMSWindows = contains(platform, ['Windows', 'Win16', 'Win32', 'WinCE']);
+export let isMSWindows = contains(['Windows', 'Win16', 'Win32', 'WinCE'], platform);

src/utils/Generic.js

@@ -9,11 +9,11 @@
  * @module xterm/utils/Generic
  */
 
-export let contains = function(el, arr) {
-  for (var i = 0; i < arr.length; i += 1) {
-    if (el === arr[i]) {
-      return true;
-    }
-  }
-  return false;
+/**
+ * Return if the given array contains the given element
+ * @param {Array} array The array to search for the given element.
+ * @param {Object} el The element to look for into the array
+ */
+export let contains = function(arr, el) {
+  return arr.indexOf(el) >= 0;
 };