Adding HTML5 track(caption) test case in PyAuto media functional tests.

chrome/test/functional/media/media_event_test_base.py

 #!/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.
 
 """Event test base for the HTML5 media tag.
 
 This class contains all common code needed for event testing. Most of the
 methods should be overridden by the subclass.
 """
 
 import pyauto_media
 from media_test_base import MediaTestBase
 
 
 class MediaEventTestBase(MediaTestBase):
   """Event test base for the HTML5 media tag."""
   # This is a list of events to test during media playback.
   EVENT_LIST = ['abort', 'canplay', 'canplaythrough', 'durationchange',
                 'emptied', 'ended', 'error', 'load', 'loadeddata',
-                'loadedmetadata', 'loadstart',  'pause', 'play', 'playing',
+                'loadedmetadata', 'loadstart', 'pause', 'play', 'playing',
                 'progress', 'ratechange', 'seeked', 'seeking', 'stalled',
-                'suspend', 'timeupdate', 'volumechange', 'waiting']
+                'suspend', 'timeupdate', 'volumechange', 'waiting',
+                # Track related events
+                'cuechange', 'enter', 'exit', 'change']
   # These are event types that are not 1 at the end of video playback.
   # There are two types of events listed here:
   #   0: event occurrence is 0.
   #   None: event occurrence is more than 1.
   # The following are default values that may be overridden.
   event_expected_values = {'ratechange': 0,
                            'pause': 0,
                            'suspend': 0,
                            'load': 0,
                            'abort': 0,
                            'error': 0,
                            'emptied': 0,
                            'stalled': 0,
                            'seeking': 0,
                            'seeked': 0,
                            'volumechange': 0,
-                           'timeupdate': None}
+                           'timeupdate': None,
+                           'cuechange': 0,
+                           'enter': 0,
+                           'exit': 0,
+                           'change': 0}
 
   def _GetEventLog(self):
     """Get the event log from the DOM tree that is produced by player.html.
 
     Returns:
       A dictionary mapping event names to the corresponding occurrence counts.
     """
     all_event_infos = {}
     for event_name in self.EVENT_LIST:
       loc = 'document.getElementById(\'%s\').innerHTML' % event_name
@@ skipping 39 matching lines @@
     """
     MediaTestBase.PostEachRunProcess(self, run_counter)
     all_event_infos = self._GetEventLog()
     # TODO(imasaki@chromium.org): adjust events based on actions.
     if not self._test_scenarios:
       self.AssertEvent(all_event_infos)
 
   def GetPlayerHTMLFileName(self):
     """A method to get the player HTML file name."""
     return 'media_event.html'