From 19d4dc18b81d09195e487c631f6417735d4527f4 Mon Sep 17 00:00:00 2001
From: JaySon-Huang <tshent@qq.com>
Date: Wed, 14 Sep 2022 17:52:32 +0800
Subject: [PATCH] Add fullstack test

Signed-off-by: JaySon-Huang <tshent@qq.com>
---
 tests/fullstack-test2/ddl/alter_pk.test | 53 +++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/tests/fullstack-test2/ddl/alter_pk.test b/tests/fullstack-test2/ddl/alter_pk.test
index 05e82917700..4c734703236 100644
--- a/tests/fullstack-test2/ddl/alter_pk.test
+++ b/tests/fullstack-test2/ddl/alter_pk.test
@@ -57,3 +57,56 @@ mysql> alter table test.t drop primary key;
 │ f           │ Nullable(Int32) │              │                    │
 │ _tidb_rowid │ Int64           │              │                    │
 └─────────────┴─────────────────┴──────────────┴────────────────────┘
+
+# issue 5859, case 1
+mysql> drop table if exists test.t_case;
+## create table with `source` is nullable
+## insert some data and left `source` to be empty
+mysql> create table test.t_case (`case_no` varchar(32) not null,`source` varchar(20) default null,`p` varchar(12) DEFAULT NULL,primary key (`case_no`));
+mysql> insert into test.t_case(case_no) values ("1"), ("2"), ("3"), ("4");
+
+## drop the primary key, fill the `source` to be non-empty
+## add new primary key with case_no and source
+mysql> alter table test.t_case drop primary key;
+mysql> update test.t_case set `source` = '' where `source` is NULL;
+mysql> alter table test.t_case add primary key (`case_no`, `source`);
+
+## send the snapshot data to tiflash
+mysql> alter table test.t_case set tiflash replica 1;
+func> wait_table test t_case
+mysql> select * from test.t_case;
++---------+------+--------+
+| case_no | p    | source |
++---------+------+--------+
+| 1       | NULL |        |
+| 2       | NULL |        |
+| 3       | NULL |        |
+| 4       | NULL |        |
++---------+------+--------+
+
+
+# issue 5859, case 2
+mysql> drop table if exists test.t_case;
+## create table with `case_no`
+mysql> create table test.t_case (`case_no` varchar(32) not null,`p` varchar(12) DEFAULT NULL,primary key (`case_no`));
+mysql> insert into test.t_case(case_no) values ("1"), ("2"), ("3"), ("4");
+
+mysql> alter table test.t_case add column `source` varchar(20) not null;
+## drop the primary key, add new primary key with case_no and source
+mysql> alter table test.t_case drop primary key;
+mysql> alter table test.t_case add primary key (`case_no`, `source`);
+
+## send the snapshot data to tiflash
+mysql> alter table test.t_case set tiflash replica 1;
+func> wait_table test t_case
+mysql> select * from test.t_case;
++---------+------+--------+
+| case_no | p    | source |
++---------+------+--------+
+| 1       | NULL |        |
+| 2       | NULL |        |
+| 3       | NULL |        |
+| 4       | NULL |        |
++---------+------+--------+
+
+mysql> drop table if exists test.t_case;