base.EventHook

remoting/webapp/unittests/event_hook_unittest.js

+// Copyright 2014 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';
+
+var eventSource = null;
+var domElement = null;
+var myChromeEvent = null;
+var listener = null;
+
+var Listener = function(element) {
+  this.onChromeEvent = sinon.stub();
+  this.onClickEvent = sinon.stub();
+  this.onCustomEvent = sinon.stub();
+  this.eventHooks_ = new base.Disposables(
+      new base.EventHook(element, 'click', this.onClickEvent.bind(this), false),
+      new base.EventHook(eventSource, 'customEvent',
+                         this.onCustomEvent.bind(this)),
+      new base.ChromeEventHook(myChromeEvent, this.onChromeEvent.bind(this)));
+};
+
+Listener.prototype.dispose = function() {
+  this.eventHooks_.dispose();
+};
+
+function raiseAllEvents() {
+  domElement.click();
+  myChromeEvent.mock$fire();
+  eventSource.raiseEvent('customEvent');
+}
+
+module('base.EventHook', {
+  setup: function() {
+    domElement = document.createElement('div');
+    eventSource = new base.EventSource();
+    eventSource.defineEvents(['customEvent']);
+    myChromeEvent = new chromeMocks.Event();
+    listener = new Listener(domElement);
+  },
+  tearDown: function() {
+    domElement = null;
+    eventSource = null;
+    myChromeEvent = null;
+    listener = null;
+  }
+});
+
+test('EventHook should hook events when constructed', function() {
+  raiseAllEvents();
+  sinon.assert.calledOnce(listener.onClickEvent);
+  sinon.assert.calledOnce(listener.onChromeEvent);
+  sinon.assert.calledOnce(listener.onCustomEvent);
+  listener.dispose();
+});
+
+test('EventHook should unhook events when disposed', function() {
+  listener.dispose();
+  raiseAllEvents();
+  sinon.assert.notCalled(listener.onClickEvent);
+  sinon.assert.notCalled(listener.onChromeEvent);
+  sinon.assert.notCalled(listener.onCustomEvent);
+});
+
+})();