[precise] PublicAccessChanged is not sent on unpublishing - TypeError: Expected a string or unicode object

[Roman Yepishev]

STR:

1. Publish a file.
2. Unpublish a file.

u1sdtool hangs since the PublicAccessChanged is not sent:

2012-04-07 17:39:13,042 - ubuntuone.SyncDaemon.EQ - ERROR - Error encountered while handling: AQ_CHANGE_PUBLIC_ACCESS_OK in <ubuntuone.syncdaem
on.interaction_interfaces.SyncdaemonEventListener object at 0x7a59490>
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/event_queue.py", line 303, in _dispatch
    method(**kwargs)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/logger.py", line 269, in inner
    res = f(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/interaction_interfaces.py", line 1064, in handle_AQ_CHANGE_PUBLI
C_ACCESS_OK
    self.interface.public_files.PublicAccessChanged(info)
  File "/usr/lib/python2.7/dist-packages/dbus/decorators.py", line 314, in emit_signal
    message.append(signature=signature, *args)
TypeError: Expected a string or unicode object

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubuntuone-client 2.99.92-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-22.35-generic 3.2.14
Uname: Linux 3.2.0-22-generic x86_64
ApportVersion: 2.0-0ubuntu4
Architecture: amd64
Date: Sat Apr 7 17:41:59 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120225)
PackageArchitecture: all
SourcePackage: ubuntuone-client
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Leo Arias (elopio)]

Can this be the cause of bug #980782 ?
After unpublishing a file, the Ubuntu One menu on Nautilus doesn't show the publish option again.

[Roman Yepishev (rye)]

@Leo, yes, nautilus does not receive a notification that the file is unpublished so it does not re-enable the "publish" menu item.

[Roman Yepishev (rye)]

I have attached the branch which fixes the issue but all public file interaction is missing the tests that make sure the related signals are sent.