// Copyright 2016 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.

package executor_test

import (
	. "github.com/pingcap/check"
)

func (s *testSuite) TestExplain(c *C) {
	// TODO: Recover this test after supporting explain clause.
	//defer testleak.AfterTest(c)()
	//tk := testkit.NewTestKit(c, s.store)
	//tk.MustExec("use test")
	//tk.MustExec("drop table if exists t1, t2")
	//tk.MustExec("create table t1 (c1 int primary key, c2 int, index c2 (c2))")
	//tk.MustExec("create table t2 (c1 int unique, c2 int)")

	//cases := []struct {
	//	sql    string
	//	result []string
	//}{
	//	{
	//		"select * from t1",
	//		[]string{
	//			"1 | SIMPLE | t1 | ALL | <nil> | <nil> | <nil> | <nil> | 0 | <nil>",
	//		},
	//	},
	//	{
	//		"select * from t1 order by c2",
	//		[]string{
	//			"1 | SIMPLE | t1 | index | c2 | c2 | <nil> | <nil> | 0 | <nil>",
	//		},
	//	},
	//	{
	//		"select * from t2 order by c2",
	//		[]string{
	//			"1 | SIMPLE | t2 | ALL | <nil> | <nil> | <nil> | <nil> | 0 | Using filesort",
	//		},
	//	},
	//	{
	//		"select * from t1 where t1.c1 > 0",
	//		[]string{
	//			"1 | SIMPLE | t1 | range | PRIMARY | PRIMARY | 8 | <nil> | 0 | Using where",
	//		},
	//	},
	//	{
	//		"select * from t1 where t1.c1 = 1",
	//		[]string{
	//			"1 | SIMPLE | t1 | const | PRIMARY | PRIMARY | 8 | <nil> | 0 | Using where",
	//		},
	//	},
	//	{
	//		"select * from t1 where t1.c2 = 1",
	//		[]string{
	//			"1 | SIMPLE | t1 | range | c2 | c2 | -1 | <nil> | 0 | Using where",
	//		},
	//	},
	//	{
	//		"select * from t1 left join t2 on t1.c2 = t2.c1 where t1.c1 > 1",
	//		[]string{
	//			"1 | SIMPLE | t1 | range | PRIMARY | PRIMARY | 8 | <nil> | 0 | Using where",
	//			"1 | SIMPLE | t2 | eq_ref | c1 | c1 | -1 | <nil> | 0 | Using where",
	//		},
	//	},
	//	{
	//		"update t1 set t1.c2 = 2 where t1.c1 = 1",
	//		[]string{
	//			"1 | SIMPLE | t1 | const | PRIMARY | PRIMARY | 8 | <nil> | 0 | Using where",
	//		},
	//	},
	//	{
	//		"delete from t1 where t1.c2 = 1",
	//		[]string{
	//			"1 | SIMPLE | t1 | range | c2 | c2 | -1 | <nil> | 0 | Using where",
	//		},
	//	},
	//}
	//for _, ca := range cases {
	//	result := tk.MustQuery("explain " + ca.sql)
	//	result.Check(testutil.RowsWithSep(" | ", ca.result...))
	//}
}