Proof of concept for running extension API stack through dev tools.

tools/telemetry/telemetry/browser_unittest.py

Index: tools/telemetry/telemetry/browser_unittest.py
diff --git a/tools/telemetry/telemetry/browser_unittest.py b/tools/telemetry/telemetry/browser_unittest.py
index 0bbed70347561d2e994c64300701d781de6d4df1..70fe63bc1261408286f09f7d67c0c59e36ace4d8 100644
--- a/tools/telemetry/telemetry/browser_unittest.py
+++ b/tools/telemetry/telemetry/browser_unittest.py
@@ -1,9 +1,12 @@
 # Copyright (c) 2012 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.
+import os
 import unittest
 
 from telemetry import browser_finder
+from telemetry import browser_options
+from telemetry import extension_page
 from telemetry import options_for_unittests
 
 class BrowserTest(unittest.TestCase):
@@ -34,6 +37,37 @@ class BrowserTest(unittest.TestCase):
       t.WaitForDocumentReadyStateToBeInteractiveOrBetter()
       self.assertEquals(t.runtime.Evaluate('navigator.userAgent'), 'telemetry')
 
+  def testAutomationExtension(self):
+    # This test starts the browser with --load-component-extension, which
+    # should load automation provider extension used for remotely running
+    # all other extension API calls.
+    options = options_for_unittests.GetCopy()
+    options.extensions_to_load = [
+        browser_options.ExtensionToLoad(
+            os.path.join(os.path.dirname(__file__),
+                         '..', 'unittest_data', 'auto_provider'),
+            True)]
+
+    browser_to_create = browser_finder.FindBrowser(options)
+    with browser_to_create.Create() as b:
+      ext = b.extensions.FindByUrl(
+          'chrome-extension://aapnijgdinlhnhlmodcfapnahmbfebeb/' +
+          '_generated_background_page.html')
+      self.assertIsNotNone(ext)
+      create_properties = { 'url':'http://www.google.com' }
+      (call_results, event_args) = ext.RunMethodWithEvents(
+          [extension_page.ExtensionEvent('chrome.tabs.onCreated')],
+          'chrome.tabs.create',
+          create_properties)
+      self.assertEquals(call_results.keys().count('0'), 1)
+      self.assertEquals(call_results["0"]['url'], 'http://www.google.com/')
+      self.assertEquals(event_args.keys().count('chrome.tabs.onCreated'), 1)
+      self.assertEquals(event_args['chrome.tabs.onCreated'].keys().count('0'),
+                        1)
+      self.assertEquals(event_args['chrome.tabs.onCreated']['0']['url'],
+                        'http://www.google.com/')
+      self.assertTrue(event_args['chrome.tabs.onCreated']['0']['selected'])
+
   def testVersionDetection(self):
     options = options_for_unittests.GetCopy()
     browser_to_create = browser_finder.FindBrowser(options)