142 lines
3.2 KiB
Go
142 lines
3.2 KiB
Go
// Copyright 2015 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 util_test
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import (
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"context"
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"fmt"
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"testing"
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"github.com/pingcap/tidb/kv"
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"github.com/pingcap/tidb/parser/terror"
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"github.com/pingcap/tidb/store/mockstore"
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"github.com/pingcap/tidb/util"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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const (
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startIndex = 0
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testCount = 12
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testPow = 10
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)
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func TestPrefix(t *testing.T) {
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s, err := mockstore.NewMockStore()
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require.NoError(t, err)
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defer func() {
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err := s.Close()
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require.NoError(t, err)
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}()
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ctx := &mockContext{10000000, make(map[fmt.Stringer]interface{}), s, nil}
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err = ctx.fillTxn()
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require.NoError(t, err)
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txn, err := ctx.GetTxn()
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require.NoError(t, err)
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err = util.DelKeyWithPrefix(txn, encodeInt(ctx.prefix))
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require.NoError(t, err)
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err = ctx.CommitTxn()
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require.NoError(t, err)
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txn, err = s.Begin()
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require.NoError(t, err)
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k := []byte("key100jfowi878230")
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err = txn.Set(k, []byte(`val32dfaskli384757^*&%^`))
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require.NoError(t, err)
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err = util.ScanMetaWithPrefix(txn, k, func(kv.Key, []byte) bool {
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return true
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})
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require.NoError(t, err)
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err = util.ScanMetaWithPrefix(txn, k, func(kv.Key, []byte) bool {
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return false
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})
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require.NoError(t, err)
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err = util.DelKeyWithPrefix(txn, []byte("key"))
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require.NoError(t, err)
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_, err = txn.Get(context.TODO(), k)
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assert.True(t, terror.ErrorEqual(kv.ErrNotExist, err))
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err = txn.Commit(context.Background())
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require.NoError(t, err)
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}
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func TestPrefixFilter(t *testing.T) {
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rowKey := []byte(`test@#$%l(le[0]..prefix) 2uio`)
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rowKey[8] = 0x00
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rowKey[9] = 0x00
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f := util.RowKeyPrefixFilter(rowKey)
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assert.False(t, f(append(rowKey, []byte("akjdf3*(34")...)))
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assert.True(t, f([]byte("sjfkdlsaf")))
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}
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type mockContext struct {
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prefix int
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values map[fmt.Stringer]interface{}
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kv.Storage
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txn kv.Transaction
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}
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func (c *mockContext) SetValue(key fmt.Stringer, value interface{}) {
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c.values[key] = value
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}
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func (c *mockContext) Value(key fmt.Stringer) interface{} {
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value := c.values[key]
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return value
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}
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func (c *mockContext) ClearValue(key fmt.Stringer) {
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delete(c.values, key)
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}
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func (c *mockContext) GetTxn() (kv.Transaction, error) {
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var err error
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c.txn, err = c.Begin()
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if err != nil {
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return nil, err
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}
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return c.txn, nil
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}
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func (c *mockContext) fillTxn() error {
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if c.txn == nil {
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return nil
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}
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var err error
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for i := startIndex; i < testCount; i++ {
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val := encodeInt(i + (c.prefix * testPow))
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err = c.txn.Set(val, val)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (c *mockContext) CommitTxn() error {
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if c.txn == nil {
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return nil
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}
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return c.txn.Commit(context.Background())
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}
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func encodeInt(n int) []byte {
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return []byte(fmt.Sprintf("%d", n))
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}
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