I have a subroutine f1 in a Class

Package A;

use Carp;

sub new {
 ...
}

sub f1 {
my $param1 = shift;
my $param2 = shift;
my $param3 = shift;

croak '- parameter1 required' unless $param1;
if ((!$param2) && $param3 eq 'X') {
    croak '- parameter2 required' ;
}

some code here;
}
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I use Test::More to test this sub . Here is what i have used

use Test::More qw(no_plan);

my $n = 1;
BEGIN {
    use_ok('A');
}
$n++;

my $a = new A;

isa_ok( $a,"A");
$n++;

eval {
    $a->f1( ) };

print "ok $n";
print "\t\tno arguements passed\n";
if ( $@) {
    diag ( "$@\n" );
}
$n++;
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my question is When we do not pass parameter to the f1 then it must die,
I use eval to do this in the test script ,
Is this how i should test this function ) or is there any other option in Test::more (which is the best way)