(True && True) == True or die "Wrong logic";
(True && False) == False or die "Wrong logic";
(False && True) == False or die "Wrong logic";
(False && False) == False or die "Wrong logic";

(True || True) == True or die "Wrong logic";
(True || False) == True or die "Wrong logic";
(False || True) == True or die "Wrong logic";
(False || False) == False or die "Wrong logic";

(!True) == False or die "Wrong logic";
(!False) == True or die "Wrong logic";