bash-3.00$ prove -v -r
t/bo/Duck....ok 1 - A duck object
ok 2 - setFlyBehaviour is public
ok 3 - FLYBEHAVIOUR is protected
ok 4 - A rubber duck object
ok 5 - the rubber duck cannot fly
ok 6 - the rubber duck sqeeks
ok 7 - A whistle object
ok 8 - the whistle doesn't fly
ok 9 - the whistle doesn't quack
ok 10 - setQuackBehaviour is public
ok 11 - QUACKBEHAVIOUR is protected
ok 12 - the whistle does quack
ok 13 - rubber is a red color
1..13
ok
All tests successful.
Files=1, Tests=13,  1 wallclock secs ( 0.28 cusr +  0.35 csys =  0.63 CPU)