Add webview testAPIMethodExistence to app_shell_browsertests.

extensions/test/data/web_view/shim/main.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.
+
+var embedder = {};
+
+window.runTest = function(testName) {

[Fady Samuel, 2014/09/18 23:22:14]

Can we move these utility functions to a common file?

[lfg, 2014/09/22 17:44:27]

I've added a TODO for this.

+  if (!embedder.test.testList[testName]) {
+    window.console.warn('Incorrect testName: ' + testName);
+    embedder.test.fail();
+    return;
+  }
+
+  // Run the test.
+  embedder.test.testList[testName]();
+};
+
+embedder.test = {};
+
+embedder.test.assertEq = function(a, b) {
+  if (a != b) {
+    window.console.warn('assertion failed: ' + a + ' != ' + b);
+    embedder.test.fail();
+  }
+};
+
+embedder.test.assertFalse = function(condition) {
+  if (condition) {
+    window.console.warn('assertion failed: false != ' + condition);
+    embedder.test.fail();
+  }
+};
+
+embedder.test.assertTrue = function(condition) {
+  if (!condition) {
+    window.console.warn('assertion failed: true != ' + condition);
+    embedder.test.fail();
+  }
+};
+
+embedder.test.fail = function() {
+  chrome.test.sendMessage('TEST_FAILED');
+};
+
+embedder.test.succeed = function() {
+  chrome.test.sendMessage('TEST_PASSED');
+};
+
+
+// Tests begin.
+
+function testAPIMethodExistence() {
+  var apiMethodsToCheck = [
+    'back',
+    'canGoBack',
+    'canGoForward',
+    'forward',
+    'getProcessId',
+    'go',
+    'reload',
+    'stop',
+    'terminate'

[Fady Samuel, 2014/09/18 23:22:14]

Can we add more methods to this?

[lfg, 2014/09/22 17:44:27]

Done.

+  ];
+  var webview = document.createElement('webview');
+  webview.setAttribute('partition', arguments.callee.name);
+  webview.addEventListener('loadstop', function(e) {
+    for (var i = 0; i < apiMethodsToCheck.length; ++i) {
+      embedder.test.assertEq('function',
+                           typeof webview[apiMethodsToCheck[i]]);
+    }
+
+    // Check contentWindow.
+    embedder.test.assertEq('object', typeof webview.contentWindow);
+    embedder.test.assertEq('function',
+                         typeof webview.contentWindow.postMessage);

[Fady Samuel, 2014/09/18 23:22:14]

nit: alignment

[lfg, 2014/09/22 17:44:27]

Done.

+    embedder.test.succeed();
+  });
+  webview.setAttribute('src', 'data:text/html,webview check api');
+  document.body.appendChild(webview);
+}
+
+embedder.test.testList = {
+  'testAPIMethodExistence': testAPIMethodExistence
+};
+
+onload = function() {
+  chrome.test.sendMessage('LAUNCHED');
+};