Add JSON.pm to third_party

third_party/JSON/JSON-2.59/t/14_latin1.t

Index: third_party/JSON/JSON-2.59/t/14_latin1.t
diff --git a/third_party/JSON/JSON-2.59/t/14_latin1.t b/third_party/JSON/JSON-2.59/t/14_latin1.t
new file mode 100644
index 0000000000000000000000000000000000000000..238a88b9c34f56a359147c07c55f7b72c4bbf6f9
--- /dev/null
+++ b/third_party/JSON/JSON-2.59/t/14_latin1.t
@@ -0,0 +1,27 @@
+# copied over from JSON::XS and modified to use JSON
+
+use Test::More;
+use strict;
+BEGIN { plan tests => 4 };
+
+BEGIN { $ENV{PERL_JSON_BACKEND} = "JSON::backportPP"; }
+
+BEGIN {
+    use lib qw(t);
+    use _unicode_handling;
+}
+
+use JSON;
+
+SKIP: {
+    skip "UNICODE handling is disabale.", 4 unless $JSON::can_handle_UTF16_and_utf8;
+
+my $xs = JSON->new->latin1->allow_nonref;
+
+ok $xs->encode ("\x{12}\x{89}       ") eq "\"\\u0012\x{89}       \"";
+ok $xs->encode ("\x{12}\x{89}\x{abc}") eq "\"\\u0012\x{89}\\u0abc\"";
+
+ok $xs->decode ("\"\\u0012\x{89}\""       ) eq "\x{12}\x{89}";
+ok $xs->decode ("\"\\u0012\x{89}\\u0abc\"") eq "\x{12}\x{89}\x{abc}";
+
+}