Initial implementation of the <extensionoptions> GuestView tag

chrome/test/data/extensions/api_test/extension_options/embed_self/test.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.
+
+chrome.test.runTests([
+  // Tests if the <extensionoptions> guest view is successfully created. This
+  // test expects that the guest options page will add a {'pass': true} property
+  // to every Window and fire the runtime.onMessage event with a short message.
+  function createExtensionOptionsGuest() {
+    chrome.runtime.onMessage.addListener(

[not at google - send to devlin, 2014/07/18 17:07:26]

nice to do this like

chrome.test.listenOnce(chrome.runtime.onMessage, function() {
  ...
});

[ericzeng, 2014/07/18 19:37:06]

Done.

+        function(message, sender, sendResponse) {

[not at google - send to devlin, 2014/07/18 17:07:26]

assert message is 'hi'?
assert sender is the options page?

may as well get some messaging sanity checks in here as well.

[ericzeng, 2014/07/18 19:37:06]

I can't see if the sender is the options page specifically, the only property I
have access to in MessageSender is id. 

[not at google - send to devlin, 2014/07/18 20:31:35]

ah.

+      var windows = chrome.extension.getViews();

[not at google - send to devlin, 2014/07/18 17:07:26]

likewise with the forEach.

and please also assert some things about these windows. for example, if there is
no views then it's moot whether they have pass or not :)

(mind you it would be crazy for there to be no views, since *this* is a view,
but you know...)

[ericzeng, 2014/07/18 19:37:06]

I can check how many there are, but I can't seem to do anything else because I'm
having a weird bug where adding the "tabs" permissions prevents
extension_browsertest from loading the extension. 

[not at google - send to devlin, 2014/07/18 20:31:35]

yeah just check how many there are. there should be exactly 2, really - this
page, and the options page. since there's no background page that shouldn't
exist (it'd be kinda flaky otherwise).

not sure what's going on the with tabs permission there, but it shouldn't be
necessary anyway.

+      for (var i = 0; i < windows.length; ++i)
+        chrome.test.assertTrue(windows[i].pass);
+      chrome.test.assertTrue('hi' == message);

[not at google - send to devlin, 2014/07/18 17:07:26]

assertEq('hi', message);

[ericzeng, 2014/07/18 19:37:06]

Done.

+      chrome.test.succeed();
+    });
+
+    var extensionoptions = document.createElement('extensionoptions');
+    extensionoptions.setAttribute('extension', chrome.runtime.id);
+    document.body.appendChild(extensionoptions);
+  }
+]);