Binary package “libmutter-test-12” in ubuntu lunar

Test helper library for GNOME's window manager library

 Mutter is a Wayland display server and X11 window manager and
 compositor library. It contains functionality related to, among other
 things, window management, window compositing, focus tracking, workspace
 management, keybindings and monitor configuration.
 This package contains a private library used by the automated tests for
 mutter and gnome-shell. It should not be used by non-GNOME packages.