WIP: Add test for JSON datatype

MANIFEST

@@ -40,6 +40,7 @@ t/40catalog.t
 t/40invalid_attributes.t
 t/40keyinfo.t
 t/40listfields.t
+t/40json.t
 t/40nulls.t
 t/40nulls_prepare.t
 t/40numrows.t

t/40json.t

@@ -0,0 +1,76 @@
+use strict;
+use warnings;
+
+use DBI;
+use DBI::Const::GetInfoType;
+use Encode;
+use Test::More;
+
+my $tb = Test::More->builder;
+binmode $tb->output,         ":utf8";
+binmode $tb->failure_output, ":utf8";
+binmode $tb->todo_output,    ":utf8";
+
+use vars qw($test_dsn $test_user $test_password);
+use lib '.', 't';
+require 'lib.pl';
+
+my $dbh = DbiTestConnect($test_dsn, $test_user, $test_password,
+  { RaiseError => 1, PrintError => 0 });
+
+if ($dbh->get_info($GetInfoType{SQL_DBMS_NAME}) eq 'MySQL' and $dbh->{mariadb_serverversion} < 50708) {
+    plan skip_all => "MySQL servers < 5.7.8 do not JSON data type";
+}
+
+if ($dbh->get_info($GetInfoType{SQL_DBMS_NAME}) eq 'MariaDB' and $dbh->{mariadb_serverversion} < 100207) {
+    plan skip_all => "MariaDB servers < 10.2.7 do not JSON data type";
+}
+
+plan tests => 19;
+
+ok ($dbh->do("DROP TABLE IF EXISTS dbd_mysql_json1"), 'Drop table if exists dbd_mysql_json1' );
+
+ok ($dbh->do('CREATE TABLE dbd_mysql_json1 (my_json JSON)'), 'Create table dbd_mysql_json1' );
+
+ok ($dbh->do("INSERT INTO dbd_mysql_json1 SET my_json = JSON_OBJECT('drink', CONVERT(UNHEX('537AC5916CC5916CC3A9') USING utf8mb4))"), 'Insert example JSON data in hexadecumal form' );
+
+ok (my $sth = $dbh->prepare("INSERT INTO dbd_mysql_json1 VALUES (?)"), 'Prepare insert for JSON data in string form' );
+my $input_in_bytes = "{\"drink\": \"Sz\xC5\x91l\xC5\x91l\xC3\xA9\"}";
+my $input = Encode::decode('UTF-8', $input_in_bytes);
+ok ($sth->execute($input), 'Execute prepared statement with JSON data in string form' );
+
+ok ($sth = $dbh->prepare("SELECT my_json FROM dbd_mysql_json1"), 'Prepare select statement in string form' );
+
+ok ($sth->execute, 'Execute prepared statement' );
+
+ok (my $result = $sth->fetchall_arrayref, 'Fetch JSON data in string form' );
+
+ok (defined($result), 'Result returned defined' );
+
+my $output_in_bytes = "{\"drink\": \"Sz\xC5\x91l\xC5\x91l\xC3\xA9\"}";
+my $output = Encode::decode('UTF-8', $output_in_bytes);
+if ($dbh->get_info($GetInfoType{SQL_DBMS_NAME}) eq 'MySQL') {
+	# XXX MySQL returns octets instead of internal Perl Unicode
+	# DBD::MySQL issue: https://github.com/perl5-dbi/DBD-MariaDB/issues/142
+	# MySQL issue: https://bugs.mysql.com/bug.php?id=95698
+	is ($result->[0][0], $output_in_bytes, "Should be $output" );
+	is ($result->[1][0], $output_in_bytes, "Should be $output" );
+} else {
+	is ($result->[0][0], $output, "Should be $output");
+	is ($result->[1][0], $output, "Should be $output");
+}
+
+ok ($sth = $dbh->prepare("SELECT HEX(my_json) FROM dbd_mysql_json1"), 'Prepare select statement in hexadecimal form' );
+
+ok ($sth->execute, 'Execute prepared statement' );
+
+ok ($result = $sth->fetchall_arrayref, "Fetch data" );
+
+ok (defined($result), "Result returned defined" );
+
+is ($result->[0][0], '7B226472696E6B223A2022537AC5916CC5916CC3A9227D', 'Fetch JSON data in hexadecumal form'  );
+is ($result->[1][0], '7B226472696E6B223A2022537AC5916CC5916CC3A9227D', 'Fetch JSON data in hexadecumal form'  );
+
+ok ($dbh->do("DROP TABLE dbd_mysql_json1"), "Drop table dbd_mysql_json1" );
+
+ok ($dbh->disconnect, "Disconnect" );