QA:Testcase desktop lock screen

Description

This tests manual and automatic locking of a workstation.

Setup

Please make sure you have gnome-screensaver installed: su -c 'yum install gnome-screensaver'.

How to test

1. Press Ctrl+Alt+"L"
2. Move your mouse or press some key
3. Input your password into unlocking dialog to log back in
4. Issue gnome-control-center screen in terminal
5. Set "Lock" to "ON" and "Lock screen after" and "Turn screen off when inactive for" to the shortest interval possible (1 minute for example).
6. Close the "Screen" window and do not touch your keyboard or mouse for more than interval from previous step.
7. Move your mouse or press some key
8. Input your password into unlocking dialog to log back in

Expected Results

1. Workstation should lock after keyboard shortcut and after specified interval.
2. After locking a dialog should be present to input your password and log back in.
3. Logging back in should be possible.