Also consider putting the subroutines in their own name-space:

#!/usr/bin/perl
use strict;
use warnings;

package MySubs;

sub test {
    print "something";
}

sub another_test {
    print "something else";
}

sub third_test {
    print "another unimaginative statement";
}

1;

package main;

my @ary = qw( test another_test third_test );
my $sub_i_want_to_call = $ary[rand(@ary)];

my $subref = MySubs->can($sub_i_want_to_call);
&$subref() if $subref;
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