bonne chance mon ami!
and: "bonne chance les amis" (if there are several of them)
Bon chance,mon ami.
Bonne chance, ami.
Boa sorte, amigo. Good luck, friend.
"bonne chance" is what you say if you want to say "good luck"
bonne chance
bonne chance
bonne chance
You could say "Bon chance" which is good luck.
Thank you good friend in French would be Merci, mon bon ami.
Sterkte my vriende
mon ami
In French, you can say "bonne chance pour ton test" to wish someone good luck on their test.
good luck my friend