#! perl # https://rt.cpan.org/Public/Bug/Display.html?id=61708 use strict; use Test::More; BEGIN { plan tests => 1 }; BEGIN { $ENV{PERL_JSON_BACKEND} = 1; } use JSON; # currently it can't pass with -support_by_pp; SKIP: { skip "can't use JSON::XS.", 1, unless( JSON->backend->is_xs ); my $json = JSON->new; eval q{ $json->encode( undef ) }; like( $@, qr/line 1\./ ); }