You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
49 lines
1.3 KiB
49 lines
1.3 KiB
// 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 handle
|
|
|
|
import (
|
|
. "github.com/pingcap/check"
|
|
"github.com/pingcap/tidb/statistics"
|
|
)
|
|
|
|
var _ = Suite(&testUpdateListSuite{})
|
|
|
|
type testUpdateListSuite struct {
|
|
}
|
|
|
|
func (s *testUpdateListSuite) TestInsertAndDelete(c *C) {
|
|
h := Handle{
|
|
listHead: &SessionStatsCollector{mapper: make(tableDeltaMap)},
|
|
feedback: statistics.NewQueryFeedbackMap(),
|
|
}
|
|
var items []*SessionStatsCollector
|
|
for i := 0; i < 5; i++ {
|
|
items = append(items, h.NewSessionStatsCollector())
|
|
}
|
|
items[0].Delete() // delete tail
|
|
items[2].Delete() // delete middle
|
|
items[4].Delete() // delete head
|
|
h.sweepList()
|
|
|
|
c.Assert(h.listHead.next, Equals, items[3])
|
|
c.Assert(items[3].next, Equals, items[1])
|
|
c.Assert(items[1].next, IsNil)
|
|
|
|
// delete rest
|
|
items[1].Delete()
|
|
items[3].Delete()
|
|
h.sweepList()
|
|
c.Assert(h.listHead.next, IsNil)
|
|
}
|
|
|