add more unit tests for various browsers

Author: boneskull

karma.conf.js

@@ -47,16 +47,41 @@ module.exports = function(config) {
         + 'environment variables!');
     }
     cfg.reporters.push('saucelabs');
-    cfg.browsers.push('ie8');
     cfg.customLaunchers = {
       ie8: {
         base: 'SauceLabs',
         browserName: 'internet explorer',
-        platform: 'Windows XP',
+        platform: 'Windows 7',
         version: '8.0'
+      },
+      chrome: {
+        base: 'SauceLabs',
+        browserName: 'chrome',
+        platform: 'Windows 8',
+        version: 'latest'
+      },
+      edge: {
+        base: 'SauceLabs',
+        browserName: 'MicrosoftEdge',
+        platform: 'Windows 10',
+        version: 'latest'
+      },
+      firefox: {
+        base: 'SauceLabs',
+        browserName: 'firefox',
+        platform: 'Windows 8.1',
+        version: 'latest'
+      },
+      safari: {
+        base: 'SauceLabs',
+        browserName: 'safari',
+        platform: 'OS X 10.11',
+        version: 'latest'
       }
     };
 
+    cfg.browsers = cfg.browsers.concat(Object.keys(cfg.customLaunchers));
+
     cfg.sauceLabs = {
       public: 'public'
     };