mirror of https://github.com/tikv/client-go.git
82 lines
2.5 KiB
Go
82 lines
2.5 KiB
Go
// Copyright 2021 TiKV Authors
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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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// NOTE: The code in this file is based on code from the
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// TiDB project, licensed under the Apache License v 2.0
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//
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// https://github.com/pingcap/tidb/tree/cc5e161ac06827589c4966674597c137cc9e809c/store/tikv/mockstore/deadlock/deadlock_test.go
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//
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// Copyright 2019 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 deadlock
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestDeadlock(t *testing.T) {
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assert := assert.New(t)
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detector := NewDetector()
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err := detector.Detect(1, 2, 100)
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assert.Nil(err)
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err = detector.Detect(2, 3, 200)
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assert.Nil(err)
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err = detector.Detect(3, 1, 300)
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assert.EqualError(err, "deadlock(200)")
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detector.CleanUp(2)
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list2 := detector.waitForMap[2]
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assert.Nil(list2)
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// After cycle is broken, no deadlock now.
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err = detector.Detect(3, 1, 300)
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assert.Nil(err)
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list3 := detector.waitForMap[3]
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assert.Len(list3.txns, 1)
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// Different keyHash grows the list.
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err = detector.Detect(3, 1, 400)
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assert.Nil(err)
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assert.Len(list3.txns, 2)
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// Same waitFor and key hash doesn't grow the list.
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err = detector.Detect(3, 1, 400)
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assert.Nil(err)
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assert.Len(list3.txns, 2)
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detector.CleanUpWaitFor(3, 1, 300)
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assert.Len(list3.txns, 1)
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detector.CleanUpWaitFor(3, 1, 400)
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list3 = detector.waitForMap[3]
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assert.Nil(list3)
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detector.Expire(1)
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assert.Len(detector.waitForMap, 1)
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detector.Expire(2)
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assert.Len(detector.waitForMap, 0)
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}
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