48 lines
1.3 KiB
Go
48 lines
1.3 KiB
Go
// Copyright 2017 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package handle
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import (
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"testing"
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"github.com/pingcap/tidb/statistics"
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"github.com/stretchr/testify/require"
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)
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func TestInsertAndDelete(t *testing.T) {
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h := Handle{
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listHead: &SessionStatsCollector{mapper: make(tableDeltaMap)},
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}
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h.feedback.data = statistics.NewQueryFeedbackMap()
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var items []*SessionStatsCollector
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for i := 0; i < 5; i++ {
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items = append(items, h.NewSessionStatsCollector())
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}
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items[0].Delete() // delete tail
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items[2].Delete() // delete middle
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items[4].Delete() // delete head
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h.sweepList()
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require.Equal(t, items[3], h.listHead.next)
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require.Equal(t, items[1], items[3].next)
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require.Nil(t, items[1].next)
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// delete rest
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items[1].Delete()
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items[3].Delete()
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h.sweepList()
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require.Nil(t, h.listHead.next)
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}
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