is( $^W, 1, 'warnings are on' );
require ThirdPartyModule;
ThirdPartyModule->import;
is( $^W, 1, 'warnings are still on' );

##</code><code>##

BEGIN{is( $^W, 1, 'warnings are on' )}
use ThirdPartyModule;
BEGIN{is( $^W, 1, 'warnings are still on' )}