Add JSON.pm to third_party

third_party/JSON/JSON-2.59/t/e14_decode_prefix.t

+#!/usr/bin/perl
+
+use strict;
+use Test::More tests => 8;
+
+BEGIN {
+    $ENV{ PERL_JSON_BACKEND } = "JSON::backportPP";
+}
+
+use JSON;
+
+my $json = JSON->new;
+
+my $complete_text = qq/{"foo":"bar"}/;
+my $garbaged_text  = qq/{"foo":"bar"}\n/;
+my $garbaged_text2 = qq/{"foo":"bar"}\n\n/;
+my $garbaged_text3 = qq/{"foo":"bar"}\n----/;
+
+is( ( $json->decode_prefix( $complete_text )  ) [1], 13 );
+is( ( $json->decode_prefix( $garbaged_text )  ) [1], 13 );
+is( ( $json->decode_prefix( $garbaged_text2 ) ) [1], 13 );
+is( ( $json->decode_prefix( $garbaged_text3 ) ) [1], 13 );
+
+eval { $json->decode( "\n" ) }; ok( $@ =~ /malformed JSON/ );
+eval { $json->decode('null') }; ok $@ =~ /allow_nonref/;
+
+eval { $json->decode_prefix( "\n" ) }; ok( $@ =~ /malformed JSON/ );
+eval { $json->decode_prefix('null') }; ok $@ =~ /allow_nonref/;
+