NotificationTestCase failures

Trace is:

===============================================================================
[ERROR]
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1039, in _inlineCallbacks
    result = g.send(result)
  File "/home/nessita/canonical/client/trunk/tests/platform/linux/test_notification.py", line 58, in tearDown
    self.mocker.verify()
  File "/usr/lib/python2.7/dist-packages/mocker.py", line 579, in verify
    raise AssertionError(os.linesep.join(message))
exceptions.AssertionError: [Mocker] Unmet expectations:

=> pynotify.init('Teh wonderful app.')
 - Performed fewer times than expected.

=> pynotify.Notification('Sous titre', 'Oi! You there!', 'ubuntuone')
 - Performed fewer times than expected.

=> mock_notification.set_hint_string('x-canonical-append', '')
 - Performed fewer times than expected.

=> mock_notification.show()
 - Performed fewer times than expected.

=> mock_notification.update('Sous titre', 'Appendix I.', 'ubuntuone')
 - Performed fewer times than expected.

=> mock_notification.set_hint_string('x-canonical-append', '')
 - Performed fewer times than expected.

=> mock_notification.show()
 - Performed fewer times than expected.

tests.platform.linux.test_notification.NotificationTestCase.test_append_notification
===============================================================================
[ERROR]
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1039, in _inlineCallbacks
    result = g.send(result)
  File "/home/nessita/canonical/client/trunk/tests/platform/linux/test_notification.py", line 58, in tearDown
    self.mocker.verify()
  File "/usr/lib/python2.7/dist-packages/mocker.py", line 579, in verify
    raise AssertionError(os.linesep.join(message))
exceptions.AssertionError: [Mocker] Unmet expectations:

=> pynotify.init('Teh wonderful app.')
 - Performed fewer times than expected.

=> pynotify.Notification('Sous titre', 'Oi! You there!', 'ubuntuone')
 - Performed fewer times than expected.

=> mock_notification.show()
 - Performed fewer times than expected.

tests.platform.linux.test_notification.NotificationTestCase.test_send_notification
===============================================================================
[ERROR]
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1039, in _inlineCallbacks
    result = g.send(result)
  File "/home/nessita/canonical/client/trunk/tests/platform/linux/test_notification.py", line 58, in tearDown
    self.mocker.verify()
  File "/usr/lib/python2.7/dist-packages/mocker.py", line 579, in verify
    raise AssertionError(os.linesep.join(message))
exceptions.AssertionError: [Mocker] Unmet expectations:

=> pynotify.init('Teh wonderful app.')
 - Performed fewer times than expected.

=> pynotify.Notification('Sous titre', 'Oi! You there!', 'fakicon')
 - Performed fewer times than expected.

=> mock_notification.show()
 - Performed fewer times than expected.

tests.platform.linux.test_notification.NotificationTestCase.test_send_notification_with_icon
===============================================================================
[ERROR]
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1039, in _inlineCallbacks
    result = g.send(result)
  File "/home/nessita/canonical/client/trunk/tests/platform/linux/test_notification.py", line 58, in tearDown
    self.mocker.verify()
  File "/usr/lib/python2.7/dist-packages/mocker.py", line 579, in verify
    raise AssertionError(os.linesep.join(message))
exceptions.AssertionError: [Mocker] Unmet expectations:

=> pynotify.init('Teh wonderful app.')
 - Performed fewer times than expected.

=> pynotify.Notification('Sous titre', 'Oi! You there!', 'ubuntuone')
 - Performed fewer times than expected.

=> mock_notification.show()
 - Performed fewer times than expected.

=> mock_notification.update('Sous titre2', 'Oi! You there!2', 'ubuntuone')
 - Performed fewer times than expected.

=> mock_notification.show()
 - Performed fewer times than expected.

tests.platform.linux.test_notification.NotificationTestCase.test_send_two_notifications
-------------------------------------------------------------------------------
Ran 2516 tests in 818.915s

FAILED (skips=12, errors=4, successes=2500)

I asked alecu about this, and he said:

(10:30:45 AM) alecu: nessita, it seems that the tests are "mocking" the pynotify module. But if the pynotify module is not installed the platform dependent code just does not install a notifier.
(10:31:26 AM) alecu: nessita, and it also happens that the pynotify module is not installed either if the notify GI is available.
(10:31:57 AM) alecu: nessita, so: either there's a GI for pynotify now, or the pynotify module is not installed.
(10:32:42 AM) alecu: nessita, in any case we should make the notify tests be a bit more smarter, and find out what the real notification module is.
(10:34:29 AM) alecu: nessita, right. And that means that the pynotify module is notinstalled
(10:34:41 AM) alecu: nessita, (I mean, by our code)
(10:34:47 AM) alecu: *imported (not installed)