Introduce Pyauto tests for Quasar (Google Talk Extension).

chrome/test/functional/gtalk/gtalk_base_test.py

Index: chrome/test/functional/gtalk/gtalk_base_test.py
===================================================================
--- chrome/test/functional/gtalk/gtalk_base_test.py	(revision 0)
+++ chrome/test/functional/gtalk/gtalk_base_test.py	(revision 0)
@@ -0,0 +1,259 @@
+#!/usr/bin/python
+# 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.
+
+"""The base test class for GTalk tests.
+
+This module contains a set of common utilities used by unittest for querying
+and manipulating the Google Talk Chrome Extension (http//go/quasar)
+"""
+
+import logging
+import re
+import os
+
+import pyauto_gtalk  # must preceed pyauto
+import pyauto
+import pyauto_errors
+
+
+class GTalkBaseTest(pyauto.PyUITest):
+  """Base test class for testing GTalk."""
+
+  _injected_js = None
+
+  def InstallGTalkExtension(self):
+    """Download and install the GTalk extension."""
+    self.UninstallGTalkExtension()
+
+    extension_path = os.path.abspath(
+        os.path.join(self.DataDir(), 'extensions', 'gtalk', 'gtalk.crx'))
+    self.assertTrue(os.path.exists(extension_path),
+        msg='Failed to find GTalk extension: ' + extension_path)
+
+    self.InstallExtension(extension_path, False)
+    extension = self.GetGTalkExtensionInfo()
+    self.assertTrue(extension, msg='Failed to install GTalk extension')
+    self.assertTrue(extension['is_enabled'], msg='GTalk extension is disabled')
+
+  def UninstallGTalkExtension(self):
+    """Uninstall the GTalk extension (if present)"""
+    extension = self.GetGTalkExtensionInfo()
+    if extension:
+      self.UninstallExtensionById(extension['id'])
+
+  def GetGTalkExtensionInfo(self):
+    """Get the data object about the GTalk extension."""
+    extensions = [x for x in self.GetExtensionsInfo()
+        if x['name'] == 'Google Talk']
+    return extensions[0] if len(extensions) == 1 else None
+
+  def RunInMole(self, js, mole_index=0):
+    """Execute javascript in a chat mole.
+
+    Args:
+      js: The javascript to run.
+      mole_index: The index of the mole in which to run the JS.
+
+    Returns:
+      The resulting value from executing the javascript.
+    """
+    return self._RunInTab(self.GetMoleInfo(mole_index), js)
+
+  def RunInRoster(self, js):
+    """Execute javascript in the chat roster.
+
+    Args:
+      js: The javascript to run.
+
+    Returns:
+      The resulting value from executing the javascript.
+    """
+    return self._RunInTab(self.GetViewerInfo(), js, '//iframe[1]\n//iframe[1]')
+
+  def RunInLoginPage(self, js, xpath=''):
+    """Execute javascript in the gaia login popup.
+
+    Args:
+      js: The javascript to run.
+      xpath: The xpath to the frame in which to execute the javascript.
+
+    Returns:
+      The resulting value from executing the javascript.
+    """
+    return self._RunInTab(self.GetLoginPageInfo(), js, xpath)
+
+  def RunInViewer(self, js, xpath=''):
+    """Execute javascript in the GTalk viewer window.
+
+    Args:
+      js: The javascript to run.
+      xpath: The xpath to the frame in which to execute the javascript.
+
+    Returns:
+      The resulting value from executing the javascript.
+    """
+    return self._RunInTab(self.GetViewerInfo(), js, xpath)
+
+  def RunInBackground(self, js, xpath=''):
+    """Execute javascript in the GTalk viewer window.
+
+    Args:
+      js: The javascript to run.
+      xpath: The xpath to the frame in which to execute the javascript.
+
+    Returns:
+      The resulting value from executing the javascript.
+    """
+    background_view = self.GetBackgroundInfo()
+    value = self.ExecuteJavascriptInRenderView(
+        self._WrapJs(js), background_view['view'])
+    self._LogRun(js, value)
+    return value
+
+  def GetMoleInfo(self, mole_index=0):
+    """Get the data object about a given chat mole.
+
+    Args:
+      mole_index: The index of the mole to retrieve.
+
+    Returns:
+      Data object describing mole.
+    """
+    return self._GetTabInfo('/pmole?', mole_index)
+
+  def GetViewerInfo(self):
+    """Get the data object about the GTalk viewer dialog."""
+    extension = self.GetGTalkExtensionInfo()
+    return self._GetTabInfo(
+        'chrome-extension://' + extension['id'] + '/viewer.html')
+
+  def GetLoginPageInfo(self):
+    """Get the data object about the gaia login popup."""
+    return self._GetTabInfo('https://accounts.google.com/ServiceLogin?')
+
+  def GetBackgroundInfo(self):
+    """Get the data object about the GTalk background page."""
+    extension_views = self.GetBrowserInfo()['extension_views']
+    for extension_view in extension_views:
+      if 'Google Talk' in extension_view['name'] and \
+          'EXTENSION_BACKGROUND_PAGE' == extension_view['view_type']:
+        return extension_view
+    return None;

[Nirnimesh, 2011/11/30 23:57:36]

nit: remove ;

[wud, 2011/12/13 19:36:24]

Done.

+
+  def WaitUntilResult(self, result, func, msg):
+    """Loop func until a condition matches is satified.
+
+    Args:
+      result: Value of func() at which to stop.
+      func: Function to run at each iteration.
+      msg: Error to print upon timing out.
+    """
+    assert callable(func)
+    self.assertTrue(self.WaitUntil(
+        lambda: func(), expect_retval=result), msg=msg)
+
+  def WaitUntilCondition(self, func, matches, msg):
+    """Loop func until condition matches is satified.
+
+    Args:
+      func: Function to run at each iteration.
+      matches: Funtion to evalute output and determine whether to stop.
+      msg: Error to print upon timing out.
+    """
+    assert callable(func)
+    assert callable(matches)
+    self.assertTrue(self.WaitUntil(
+        lambda: matches(func())), msg=msg)
+
+  def _WrapJs(self, statement):
+    """Wrap the javascript to be executed.
+
+    Args:
+      statement: The piece of javascript to wrap.
+
+    Returns:
+      The wrapped javascript.
+    """
+    return """
+        window.domAutomationController.send(
+            (function(){
+            %s
+            try{return %s}
+            catch(e){return "JS_ERROR: " + e}})())
+        """ % (self._GetInjectedJs(), statement)
+
+  def _RunInTab(self, tab, js, xpath=''):
+    """Execute javascript in a given tab.
+
+    Args:
+      tab: The data object for the Chrome window tab returned by
+          _GetTabInfo.
+      js: The javascript to run.
+      xpath: The xpath to the frame in which to execute the javascript.
+
+    Returns:
+      The resulting value from executing the javascript.
+    """
+    if not tab:
+      logging.debug('Tab not found: %s' % tab)
+      return False
+    logging.info('Run in tab: %s' % js)
+
+    # Catch any JSONInterfaceError thrown while running.
+    try:

[Nirnimesh, 2011/11/30 23:57:36]

I really think you should fix the javascript code to account for missing dom
elements.

Otherwise, every javascript error ends up causing a 25 secs delay in
ExecuteJavascriptInTab()

[wud, 2011/12/13 19:36:24]

Ok, I've removed the "except" and haven't been able to reproduce any problems
yet. If they come up, I'll try to fix the JS.

+      value = self.ExecuteJavascriptInTab(self._WrapJs(js),
+          windex = tab['windex'],
+          frame_xpath = xpath)
+    except pyauto_error.JSONInterfaceError as e:
+      logging.debug('Error running JS: %s' % js)
+      value = False
+    self._LogRun(js, value)
+    return value
+
+  def _LogRun(self, js, value):
+    """Log a particular run.
+
+    Args:
+      js: The javascript statement executed.
+      value: The return value for the execution.
+    """
+    # works around UnicodeEncodeError: 'ascii' codec can't encode...
+    out = value
+    if not isinstance(value, basestring):
+      out = str(value)
+    out = re.sub('\s', ';', out[:300])
+    logging.info(js + ' ===> ' + out.encode('utf-8'))
+
+  def _GetTabInfo(self, url_query, index=0):
+    """Get the data object for a given tab.
+
+    Args:
+      url_query: The substring of the URL to search for.
+      index: The index within the list of matches to return.
+
+    Returns:
+      The data object for the tab.
+    """
+    windows = self.GetBrowserInfo()['windows']
+    i = 0
+    for win in windows:
+      for tab in win['tabs']:
+        if tab['url'] and url_query in tab['url']:
+          # Store reference to windex used in _RunInTab.
+          tab['windex'] = win['index']
+          if i == index:
+            return tab
+          i = i + 1
+    return None
+
+  def _GetInjectedJs(self):
+    """Get the javascript to inject in the execution environment."""
+    if self._injected_js is None:
+      self._injected_js = open(os.path.dirname(__file__) + '/jsutils.js').read()
+    return self._injected_js
+
+  def action_max_timeout_ms(self):
+    """Get the default timeout for each WaitUntil command."""
+    return 30000;