Gettings tests passing for IE9

karma.conf.js

 // Karma configuration
 // Generated on Fri Aug 15 2014 23:11:13 GMT-0500 (CDT)
 
+var webpack = require('webpack');
+
 function createCustomLauncher(browser, version, platform) {
   return {
     base: 'SauceLabs',
@@ -70,7 +72,7 @@ module.exports = function(config) {
     if (runAll || process.env.SAUCE_IE) {
       // TODO These need to be fixed
       // customLaunchers.SL_IE8 = createCustomLauncher('internet explorer', 8, 'Windows 7');
-      // customLaunchers.SL_IE9 = createCustomLauncher('internet explorer', 9, 'Windows 2008');
+      customLaunchers.SL_IE9 = createCustomLauncher('internet explorer', 9, 'Windows 2008');
       customLaunchers.SL_IE10 = createCustomLauncher('internet explorer', 10, 'Windows 2012');
       customLaunchers.SL_IE11 = createCustomLauncher('internet explorer', 11, 'Windows 8.1');
     }
@@ -183,6 +185,11 @@ module.exports = function(config) {
         {
           './adapters/http': 'var undefined'
         }
+      ],
+      plugins: [
+        new webpack.DefinePlugin({
+          'process.env.NODE_ENV': JSON.stringify('test')
+        })
       ]
     },
 

lib/adapters/xhr.js

@@ -21,7 +21,8 @@ module.exports = function xhrAdapter(resolve, reject, config) {
 
   // For IE 8/9 CORS support
   // Only supports POST and GET calls and doesn't returns the response headers.
-  if (window.XDomainRequest && !('withCredentials' in request) && !isURLSameOrigin(config.url)) {
+  // DON'T do this for testing b/c XMLHttpRequest is mocked, not XDomainRequest.
+  if (process.env.NODE_ENV !== 'test' && window.XDomainRequest && !('withCredentials' in request) && !isURLSameOrigin(config.url)) {
     request = new window.XDomainRequest();
     loadEvent = 'onload';
     xDomain = true;

package.json

@@ -4,7 +4,7 @@
   "description": "Promise based HTTP client for the browser and node.js",
   "main": "index.js",
   "scripts": {
-    "build": "./node_modules/.bin/grunt build",
+    "build": "NODE_ENV=production ./node_modules/.bin/grunt build",
     "test": "./node_modules/.bin/grunt test",
     "start": "node ./sandbox/server.js",
     "examples": "node ./examples/server.js",

webpack.config.js

@@ -22,15 +22,21 @@ function generateConfig(name) {
     ],
     devtool: 'source-map'
   };
+
+  config.plugins = [
+    new webpack.DefinePlugin({
+      'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV)
+    })
+  ];
  
   if (uglify) {
-    config.plugins = [
+    config.plugins.push(
       new webpack.optimize.UglifyJsPlugin({
         compressor: {
           warnings: false
         }
       })
-    ];
+    );
   }
 
   return config;