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#!/usr/bin/env python
# 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 re
import time
import pyauto_functional
import pyauto
import pyauto_errors
class YoutubeTestHelper():
"""Helper functions for Youtube tests.
For sample usage, look at class YoutubeTest.
"""
# YouTube player states
is_unstarted = '-1'
is_playing = '1'
is_paused = '2'
has_ended = '0'
_pyauto = None
def __init__(self, pyauto):
self._pyauto = pyauto
def IsFlashPluginEnabled(self):
"""Verify flash plugin availability and its state."""
return [x for x in self._pyauto.GetPluginsInfo().Plugins() \
if x['name'] == 'Shockwave Flash' and x['enabled']]
def AssertPlayerState(self, state, msg):
expected_regex = '^%s$' % state
self.WaitForDomNode('id("playerState")', expected_value=expected_regex,
msg=msg)
def WaitUntilPlayerReady(self):
"""Verify that player is ready."""
self.AssertPlayerState(state=self.is_unstarted,
msg='Failed to load youtube player.')
def GetPlayerState(self):
"""Returns a player state."""
js = """
var val = ytplayer.getPlayerState();
window.domAutomationController.send(val + '');
"""
return self._pyauto.ExecuteJavascript(js)
def GetVideoInfo(self):
"""Returns Youtube video info."""
youtube_apis = self._pyauto.GetPrivateInfo()['youtube_api']
youtube_debug_text = youtube_apis['GetDebugText']
return self._pyauto.ExecuteJavascript(
'window.domAutomationController.send(%s);' % youtube_debug_text)
def GetVideoDroppedFrames(self):
"""Returns total Youtube video dropped frames.
Returns:
-1 if failed to get video frames from the video data
"""
video_data = self._pyauto.GetVideoInfo()
matched = re.search('droppedFrames=([\d\.]+)', video_data)
if matched:
return int(matched.group(1))
else:
return -1
def GetVideoFrames(self):
"""Returns Youtube video frames/second.
Returns:
-1 if failed to get droppd frames from the video data.
"""
video_data = self._pyauto.GetVideoInfo()
matched = re.search('videoFps=([\d\.]+)', video_data)
if matched:
return int(matched.group(1))
else:
return -1
def GetVideoTotalBytes(self):
"""Returns video total size in bytes.
To call this function, video must be in the paying state,
or this returns 0.
"""
total_bytes = 0
total_bytes = self._pyauto.ExecuteJavascript("""
bytesTotal = document.getElementById("bytesTotal");
window.domAutomationController.send(bytesTotal.innerHTML);
""")
return int(total_bytes)
def GetVideoLoadedBytes(self):
"""Returns video size in bytes."""
loaded_bytes = 0
loaded_bytes = self.ExecuteJavascript("""
bytesLoaded = document.getElementById("bytesLoaded");
window.domAutomationController.send(bytesLoaded.innerHTML);
""")
return int(loaded_bytes)
def GetCurrentVideoTime(self):
"""Returns the current time of the video in seconds."""
current_time = 0
current_time = self.ExecuteJavascript("""
videoCurrentTime = document.getElementById("videoCurrentTime");
window.domAutomationController.send(videoCurrentTime.innerHTML);
""")
return int(current_time)
def PlayVideo(self):
"""Plays the loaded video."""
self._pyauto.ExecuteJavascript("""
ytplayer.playVideo();
window.domAutomationController.send('');
""")
def PauseVideo(self):
"""Pause the video."""
self.ExecuteJavascript("""
ytplayer.pauseVideo();
window.domAutomationController.send('');
""")
def PlayVideoAndAssert(self, youtube_video='zuzaxlddWbk'):
"""Start video and assert the playing state.
By default test uses http://www.youtube.com/watch?v=zuzaxlddWbki.
Args:
youtube_video: The string ID of the youtube video to play.
"""
self._pyauto.assertTrue(self._pyauto.IsFlashPluginEnabled(),
msg='From here Flash plugin is disabled or not available')
url = self._pyauto.GetHttpURLForDataPath(
'media', 'youtube.html?video=' + youtube_video)
self._pyauto.NavigateToURL(url)
self.WaitUntilPlayerReady()
i = 0
# The YouTube player will get in a state where it does not return the
# number of loaded bytes. When this happens we need to reload the page
# before starting the test.
while self.GetVideoLoadedBytes() == 1 and i < 30:
self._pyauto.NavigateToURL(url)
self.WaitUntilPlayerReady()
i = i + 1
self.PlayVideo()
self.AssertPlayerState(state=self.is_playing,
msg='Player did not enter the playing state')
class YoutubeTest(pyauto.PyUITest, YoutubeTestHelper):
"""Test case for Youtube videos."""
def __init__(self, methodName='runTest', **kwargs):
pyauto.PyUITest.__init__(self, methodName, **kwargs)
YoutubeTestHelper.__init__(self, self)
def testPlayerStatus(self):
"""Test that YouTube loads a player and changes player states.
Test verifies various player states like unstarted, playing, paused
and ended.
"""
# Navigating to Youtube video. This video is 122 seconds long.
# During tests, we are not goinig to play this video full.
self.PlayVideoAndAssert()
self.PauseVideo()
self.AssertPlayerState(state=self.is_paused,
msg='Player did not enter the paused state')
# Seek to the end of video
self.ExecuteJavascript("""
val = ytplayer.getDuration();
ytplayer.seekTo(val, true);
window.domAutomationController.send('');
""")
self.PlayVideo()
# We've seeked to almost the end of the video but not quite.
# Wait until the end.
self.AssertPlayerState(state=self.has_ended,
msg='Player did not reach the stopped state')
def testPlayerResolution(self):
"""Test various video resolutions."""
self.PlayVideoAndAssert()
resolutions = self.ExecuteJavascript("""
res = ytplayer.getAvailableQualityLevels();
window.domAutomationController.send(res.toString());
""")
resolutions = resolutions.split(',')
for res in resolutions:
self.ExecuteJavascript("""
ytplayer.setPlaybackQuality('%s');
window.domAutomationController.send('');
""" % res)
curr_res = self.ExecuteJavascript("""
res = ytplayer.getPlaybackQuality();
window.domAutomationController.send(res + '');
""")
self.assertEqual(res, curr_res, msg='Resolution is not set to %s.' % res)
def testPlayerBytes(self):
"""Test that player downloads video bytes."""
self.PlayVideoAndAssert()
total_bytes = self.GetVideoTotalBytes()
prev_loaded_bytes = 0
loaded_bytes = 0
count = 0
while loaded_bytes < total_bytes:
# We want to test bytes loading only twice
count = count + 1
if count == 2:
break
loaded_bytes = self.GetVideoLoadedBytes()
self.assertTrue(prev_loaded_bytes <= loaded_bytes)
prev_loaded_bytes = loaded_bytes
# Give some time to load a video
time.sleep(1)
if __name__ == '__main__':
pyauto_functional.Main()
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