WebUI test framework: fix Mock4JS verification, allow chrome.send passthrough.

chrome/test/data/webui/chrome_send_browsertest.js

+// Copyright (c) 2011 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.
+
+/**
+ * @fileoverview Tests to ensure that chrome.send mocking works as expected.
+ * @author scr@chromium.org (Sheridan Rawlins)
+ * @see test_api.js
+ */
+
+GEN('#include "chrome/test/data/webui/chrome_send_browsertest.h"');
+
+/**
+ * Test fixture for chrome send WebUI testing.
+ * @constructor
+ * @extends {testing.Test}
+ */
+function ChromeSendWebUITest() {}
+
+ChromeSendWebUITest.prototype = {
+  __proto__: testing.Test.prototype,
+
+  /**
+   * Generate a real C++ class; don't typedef.
+   * @type {?string}
+   * @override
+   */
+  typedefCppFixture: null,
+
+  /** @inheritDoc */
+  browsePreload: DUMMY_URL,
+
+  /** @inheritDoc */
+  setUp: function() {
+    // Set up a mock handler class to catch the 'checkSend' message.
+    function MockHandler() {}
+    MockHandler.prototype = {
+      checkSend: function() {},
+    };
+    this.mockHandler = mock(MockHandler);
+    registerMockMessageCallbacks(this.mockHandler, MockHandler);
+  }
+};
+
+// Test that chrome.send can be mocked outside the preLoad method.
+TEST_F('ChromeSendWebUITest', 'NotInPreload', function() {
+  this.mockHandler.expects(once()).checkSend();
+  chrome.send('checkSend');
+});
+
+/**
+ * Test fixture for chrome send WebUI testing with passthrough.
+ * @constructor
+ * @extends {ChromeSendWebUITest}
+ */
+function ChromeSendPassthroughWebUITest() {}
+
+ChromeSendPassthroughWebUITest.prototype = {
+  __proto__: ChromeSendWebUITest.prototype,
+};
+
+// Test that the mocked chrome.send can call the original.
+TEST_F('ChromeSendPassthroughWebUITest', 'CanCallOriginal', function() {
+  chrome.send('expectCheckSend');
+  this.mockHandler.expects(once()).checkSend().
+      will(callFunction(function() {
+                          chrome.originalSend('checkSend');
+                        }));
+  chrome.send('checkSend');
+});