$ prove -v monks/11104981.pl

monks/11104981.pl ..
ok 1 - $ -> ¥
ok 2 - € -> $
ok 3 - $ -> €
1..3
ok
All tests successful.
Files=1, Tests=3,  0 wallclock secs ( 0.02 usr  0.00 sys +  0.04 cusr  0.00 csys =  0.06 CPU)
Result: PASS