use Test::More tests => 2;

no warnings;

BEGIN { use_ok( 'Backend::A' ); }
BEGIN { use_ok( 'Backend::B' ); }

##</code><code>##

use Test::More tests => 2;

no warnings qw( redefine );

BEGIN { use_ok( 'Backend::A' ); }
BEGIN { use_ok( 'Backend::B' ); }

##</code><code>##

use Test::More tests => 2;
BEGIN { use_ok( 'Backend::A' ); }
BEGIN { no warnings qw( redefine );
        use_ok( 'Backend::B' ); }

##</code><code>##

# having given up on testing temporarily:
no warnings qw( redefine );
require Backend::A;
require Backend::B;