1 files changed, 41 insertions, 0 deletions
diff --git a/mysql-test/suite/perfschema/t/dml_socket_instances.test b/mysql-test/suite/perfschema/t/dml_socket_instances.test
new file mode 100644
index 00000000..2f92c0f5
--- /dev/null
+++ b/mysql-test/suite/perfschema/t/dml_socket_instances.test
@@ -0,0 +1,41 @@
+# Tests for PERFORMANCE_SCHEMA
+
+--source include/not_embedded.inc
+--source include/have_perfschema.inc
+
+--disable_result_log
+select * from performance_schema.socket_instances limit 1;
+
+select * from performance_schema.socket_instances
+  where ip='FOO';
+--enable_result_log
+
+--error ER_TABLEACCESS_DENIED_ERROR
+insert into performance_schema.socket_instances
+  set ip='FOO', event_name='BAR', port=12;
+
+--error ER_TABLEACCESS_DENIED_ERROR
+update performance_schema.socket_instances
+  set ip='FOO';
+
+--error ER_TABLEACCESS_DENIED_ERROR
+delete from performance_schema.socket_instances
+  where event_name like "wait/%";
+
+--error ER_TABLEACCESS_DENIED_ERROR
+delete from performance_schema.socket_instances;
+
+-- error ER_TABLEACCESS_DENIED_ERROR
+LOCK TABLES performance_schema.socket_instances READ;
+UNLOCK TABLES;
+
+-- error ER_TABLEACCESS_DENIED_ERROR
+LOCK TABLES performance_schema.socket_instances WRITE;
+UNLOCK TABLES;
+
+--echo #
+--echo # MDEV-25325 column_comment for performance_schema tables
+--echo #
+select column_name, column_comment 
+from information_schema.columns 
+where table_schema='performance_schema' and table_name='socket_instances';