// Copyright 2017 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 (
	"fmt"

	. "github.com/pingcap/check"
	"github.com/pingcap/tidb/util/testkit"
	"github.com/pingcap/tidb/util/testleak"
)

func (s *testSuite) TestAnalyzeTable(c *C) {
	defer func() {
		testleak.AfterTest(c)()
	}()
	tk := testkit.NewTestKit(c, s.store)
	tk.MustExec("use test")
	tk.MustExec("drop table if exists t1")
	tk.MustExec("create table t1 (a int)")
	tk.MustExec("create index ind_a on t1 (a)")
	tk.MustExec("insert into t1 (a) values (1)")
	result := tk.MustQuery("explain select * from t1 where t1.a = 1")
	rowStr := fmt.Sprintf("%s", result.Rows())
	c.Check(rowStr, Equals, "[[IndexScan_7   cop table:t1, index:a, range:[1,1], out of order:true 10] [IndexReader_8   root index:IndexScan_7 10]]")
	tk.MustExec("analyze table t1")
	result = tk.MustQuery("explain select * from t1 where t1.a = 1")
	rowStr = fmt.Sprintf("%s", result.Rows())
	c.Check(rowStr, Equals, "[[TableScan_4 Selection_5  cop table:t1, range:(-inf,+inf), keep order:false 1] [Selection_5  TableScan_4 cop eq(test.t1.a, 1) 1] [TableReader_6   root data:Selection_5 1]]")

	tk.MustExec("drop table if exists t1")
	tk.MustExec("create table t1 (a int)")
	tk.MustExec("create index ind_a on t1 (a)")
	tk.MustExec("insert into t1 (a) values (1)")
	tk.MustExec("analyze table t1 index ind_a")
	result = tk.MustQuery("explain select * from t1 where t1.a = 1")
	rowStr = fmt.Sprintf("%s", result.Rows())
	c.Check(rowStr, Equals, "[[TableScan_4 Selection_5  cop table:t1, range:(-inf,+inf), keep order:false 1] [Selection_5  TableScan_4 cop eq(test.t1.a, 1) 1] [TableReader_6   root data:Selection_5 1]]")
}