How about using our instead of my:

use strict;
require 'framework.pl';

$framework::date = "2001-12-05";
&framework::testcase1;
$framework::date = "2001-11-15";
&framework::testcase1;

------------------------------------------

package framework;
use strict;

our $date = "2001-11-12";
sub testcase1 { print "$date\n"; }

1; # don't forget to return true value!!
[download]

I don't use our very much, but it seems applicable here. Personally, i would opt for the more standard OO approach:

use strict;
require 'framework.pl';

my $fw = framework->new();

$fw->set_date("2001-12-05");
$fw->testcase1();

$fw->set_date("2001-11-15");
$fw->testcase1();

-----------------------------------------

package framework;

sub new {
   my $class = shift;
   my $self = { date => '2001-11-12' };
   return bless $self, $class;
}

sub set_date {
   my ($self,$date) = @_;
   shift->{'date'} = $date;
}

sub testcase1 { 
   print shift->{'date'}, "\n";
}

1;
[download]

Perhaps Test::Simple or Test::Unit would be helpful to you as well.

(this node updated with minor tweaks and such...)

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
F--F--F--F--F--F--F--F--
(the triplet paradiddle)