Added partial unit tests for host_controller.js. More to come.

remoting/webapp/crd/js/mock_xhr_unittest.js

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 (function() {
 'use strict';
 
 /** @type {boolean} */
 var oldThrowOnAssert;
 
@@ skipping 54 matching lines @@
   var promise = sendRequest();
   assert.throws(sendRequest);
   return promise.then(function(/** remoting.Xhr.Response */ result) {
     assert.equal(result.status, 204);
     assert.equal(result.getText(), '');
     assert.throws(result.getJson.bind(result));
   });
 });
 
 QUnit.test('setEmptyResponseFor with repeat', function(assert) {
-  remoting.MockXhr.setEmptyResponseFor('GET', 'http://foo.com', true);
+  remoting.MockXhr.setEmptyResponseFor('GET', 'http://foo.com', 404, true);
   var promise1 = sendRequest();
   var promise2 = sendRequest();
   return promise1.then(function(/** remoting.Xhr.Response */ result) {
-    assert.equal(result.status, 204);
+    assert.equal(result.status, 404);
     assert.equal(result.getText(), '');
     assert.throws(result.getJson.bind(result));
     return promise2;
   }).then(function(/** remoting.Xhr.Response */ result) {
-    assert.equal(result.status, 204);
+    assert.equal(result.status, 404);
     assert.equal(result.getText(), '');
     assert.throws(result.getJson.bind(result));
   });
 });
 
 QUnit.test('setEmptyResponseFor with RegExp', function(assert) {
   remoting.MockXhr.setEmptyResponseFor('GET', /foo/);
   var promise = sendRequest();
   assert.throws(sendRequest);
   return promise.then(function(/** remoting.Xhr.Response */ result) {
@@ skipping 67 matching lines @@
   var promise = sendRequestForJson();
   assert.throws(sendRequestForJson);
   return promise.then(function(/** remoting.Xhr.Response */ result) {
     assert.equal(result.status, 200);
     assert.equal(JSON.parse(result.getText()), 'foo');
     assert.equal(result.getJson(), 'foo');
   });
 });
 
 })();