Adding a test to check default volume

functional/chromeos_volume.py

 #!/usr/bin/env 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.
 
 import logging
 import os
 import subprocess
 
 import pyauto_functional  # Must be imported before pyauto
 import pyauto
 
 
 class ChromeosVolume(pyauto.PyUITest):
   """Test case for volume levels.
      
   Test volume and mute changes with different state like, login,
   lock, logout, etc...
   """
 
+  DEFAULT_VOLUME = {u'volume': 77.134215500945189, u'is_mute': False}
+
   def setUp(self):
     # We want a clean session_manager instance for every run,
     # so restart session_manager now.
     assert self.WaitForSessionManagerRestart(
         lambda: subprocess.call(['pkill', 'session_manager'])), \
         'Timed out waiting for session_manager to start.'
     pyauto.PyUITest.setUp(self)
     self._initial_volume_info = self.GetVolumeInfo()
 
   def tearDown(self):
     self.SetVolume(self._initial_volume_info['volume'])
     self.SetMute(self._initial_volume_info['is_mute'])
     pyauto.PyUITest.tearDown(self)
 
   def _Login(self):
     """Perform login"""
     credentials = self.GetPrivateInfo()['test_google_account']
     self.Login(credentials['username'], credentials['password'])
     logging.info('Logged in as %s' % credentials['username'])   
     login_info = self.GetLoginInfo()
     self.assertTrue(login_info['is_logged_in'], msg='Login failed.')
 
+  def testDefaultVolume(self):
+    """Test the default volume settings"""
+    self._Login()
+    volume = self.GetVolumeInfo()
+    self.assertEqual(volume, self.DEFAULT_VOLUME,
+        msg='Volume settings are set to %s, not matching with default '\
+        'volume settings %s.' % (volume, self.DEFAULT_VOLUME))
+
   def testLoginLogoutVolume(self):
     """Test that volume settings are preserved after login and logout"""
     before_login = self.GetVolumeInfo()
     self._Login()
     after_login = self.GetVolumeInfo() 
     self.assertEqual(before_login, after_login,
         msg='Before login : %s and after login : %s, volume states are not '\
         'matching' % (before_login, after_login))
     self.Logout()
     after_logout = self.GetVolumeInfo() 
@@ skipping 12 matching lines @@
     self.SetVolume(lock_volume['volume'])
     self.SetMute(lock_volume['is_mute'])
     self.UnlockScreen(self.GetPrivateInfo()['test_google_account']['password'])
     after_login = self.GetVolumeInfo() 
     self.assertEqual(lock_volume, after_login, 
         msg='Locking screen volume changes are not preserved')
 
 
 if __name__ == '__main__':
   pyauto_functional.Main()