Management of user-invisible windows
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This test shows how unity should manage the user-invisible windows (i.e the
windows with the skip-taskbar flag on).

#. Start on a clean screen
#. Open a window of an unsticky application with the skip-taskbar flag set to ON

Outcome
  Unity should ignore it, not showing it both on the launcher and on the Alt+Tab.


Pinned Application user-invisible window
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This test shows how unity should manage the user-invisible windows (i.e the
windows with the skip-taskbar flag on) that belongs to an application sticked
to launcher.

#. Start on a clean screen
#. Open one or more windows of a sticky application with the skip-taskbar flag
   set to ON

Outcome
  Unity should show the pinned application icon in the running state with only
  one left indicator (pip), but clicking on it should make a new instance of the
  application to run.
  Otherwise, selecting that application in the Alt+Tab should bring the user-invisible
  window(s) to focus.


Running Application with both visible and invisible windows
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This test shows how unity should manage applications with both user visible
and invisible windows.

#. Start on a clean screen
#. Open one or more windows of an application with the skip-taskbar flag set to OFF
#. Open one or more windows of that application with the skip-taskbar flag set to ON

Outcome
  The launcher icon should count with left icon indicators (pips) only the visible
  window(s); when clicking on it or selecting it via Alt+Tab unity should bring
  to focus only the visible windows, while at the second click over the launcher
  the spread with both visible and invisible windows should be activated.
  When all the user-visible windows are closed, the application should stay in
  the launcher or in the Alt+Tab (and show as running) only if is sticky,
  otherwise the icon should hide.