Connecting to a signal weakly has the same effect as connecting to it strongly,
but it allows the garbage collector to disconnect the signal in case nothing
else references this function.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This uses busted (http://olivinelabs.com/busted/) to implement unit testing.
This is wired up to "make check" and/or "make test".
This commit also adds tests for the more complicated parts of the gears and
wibox.layout libraries.
Signed-off-by: Uli Schlachter <psychon@znc.in>