use Test::More; use strict; BEGIN { plan tests => 5 }; BEGIN { $ENV{PERL_JSON_BACKEND} = "JSON::backportPP"; } BEGIN { use_ok('JSON'); } ok( exists $INC{ 'JSON/backportPP.pm' }, 'load backportPP' ); ok( ! exists $INC{ 'JSON/PP.pm' }, q/didn't load PP/ ); is( JSON->backend, 'JSON::PP' ); ok( JSON->backend->is_pp );