adding fk tests

localtests/discard-fk/create.sql

@@ -0,0 +1,31 @@
+drop table if exists gh_ost_test;
+drop table if exists gh_ost_test_fk_parent;
+create table gh_ost_test_fk_parent (
+  id int auto_increment,
+  ts timestamp,
+  primary key(id)
+);
+create table gh_ost_test (
+  id int auto_increment,
+  i int not null,
+  parent_id int not null,
+  primary key(id),
+  constraint test_fk foreign key (parent_id) references gh_ost_test_fk_parent (id) on delete no action
+) auto_increment=1;
+
+insert into gh_ost_test_fk_parent (id) values (1),(2),(3);
+
+drop event if exists gh_ost_test;
+delimiter ;;
+create event gh_ost_test
+  on schedule every 1 second
+  starts current_timestamp
+  ends current_timestamp + interval 60 second
+  on completion not preserve
+  enable
+  do
+begin
+  insert into gh_ost_test values (null, 11, 1);
+  insert into gh_ost_test values (null, 13, 2);
+  insert into gh_ost_test values (null, 17, 3);
+end ;;

localtests/discard-fk/extra_args

@@ -0,0 +1 @@
+--discard-foreign-keys