MDEV-19141 server_audit_excl_users accepts only values with less than 1024 chars.

Since this limit is imposed by the SHOW_VAR_FUNC_BUFF_SIZE, we just
launch the error message.

1 files changed, 8 insertions, 0 deletions

diff --git a/mysql-test/suite/plugins/t/server_audit.test b/mysql-test/suite/plugins/t/server_audit.test
index 4af1ed883e3..fa23dc5caa3 100644
--- a/mysql-test/suite/plugins/t/server_audit.test
+++ b/mysql-test/suite/plugins/t/server_audit.test
@@ -13,6 +13,14 @@ set global server_audit_incl_users=null;
 set global server_audit_file_path='server_audit.log';
 set global server_audit_output_type=file;
 set global server_audit_logging=on;
+
+--error ER_WRONG_VALUE_FOR_VAR
+set global server_audit_incl_users= repeat("'root',", 10000);
+show variables like 'server_audit_incl_users';
+--error ER_WRONG_VALUE_FOR_VAR
+set global server_audit_excl_users= repeat("'root',", 10000);
+show variables like 'server_audit_excl_users';
+
 --sleep 2
 connect (con1,localhost,root,,mysql);
 connection default;