mirror of https://github.com/tikv/client-go.git
95 lines
2.4 KiB
Go
95 lines
2.4 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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package raw_tikv_test
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import (
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"context"
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"strings"
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"testing"
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"github.com/stretchr/testify/require"
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"github.com/stretchr/testify/suite"
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"github.com/tikv/client-go/v2/config"
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"github.com/tikv/client-go/v2/rawkv"
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)
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func TestCAS(t *testing.T) {
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if !*withTiKV {
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t.Skip("skipping TestCAS because with-tikv is not enabled")
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}
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suite.Run(t, new(casTestSuite))
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}
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type casTestSuite struct {
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suite.Suite
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client *rawkv.Client
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}
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func (s *casTestSuite) SetupTest() {
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addrs := strings.Split(*pdAddrs, ",")
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client, err := rawkv.NewClient(context.TODO(), addrs, config.DefaultConfig().Security)
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require.Nil(s.T(), err)
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s.client = client
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}
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func (s *casTestSuite) mustCompareAndSwap(key, previousValue, newValue []byte) ([]byte, bool) {
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previousValue, succeed, err := s.client.
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SetAtomicForCAS(true).
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CompareAndSwap(context.TODO(), key, previousValue, newValue)
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s.Nil(err)
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return previousValue, succeed
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}
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func (s *casTestSuite) mustGet(key []byte) []byte {
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v, err := s.client.Get(context.TODO(), key)
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s.Nil(err)
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return v
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}
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func (s *casTestSuite) mustPut(key, value []byte) {
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err := s.client.Put(context.TODO(), key, value)
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s.Nil(err)
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}
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func (s *casTestSuite) mustDelete(key []byte) {
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err := s.client.Delete(context.TODO(), key)
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s.Nil(err)
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}
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func (s *casTestSuite) TestBasic() {
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key := []byte("key")
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s.mustDelete(key)
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initial := []byte("value-0")
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prev, succeed := s.mustCompareAndSwap(key, nil, initial)
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s.Nil(prev)
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s.True(succeed)
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s.Equal(initial, s.mustGet(key))
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another := []byte("value-1")
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s.mustPut(key, another)
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prev, succeed = s.mustCompareAndSwap(key, another, initial)
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s.True(succeed)
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s.Equal(another, prev)
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prev, succeed = s.mustCompareAndSwap(key, another, initial)
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s.False(succeed)
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s.Equal(initial, prev)
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}
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func (s *casTestSuite) TearDownTest() {
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s.client.Close()
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}
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