mirror of https://github.com/tikv/client-go.git
80 lines
2.7 KiB
Go
80 lines
2.7 KiB
Go
// Copyright 2021 TiKV Authors
|
|
//
|
|
// 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,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// NOTE: The code in this file is based on code from the
|
|
// TiDB project, licensed under the Apache License v 2.0
|
|
//
|
|
// https://github.com/pingcap/tidb/tree/cc5e161ac06827589c4966674597c137cc9e809c/store/tikv/unionstore/memdb_arena.go
|
|
//
|
|
|
|
// Copyright 2020 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,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package arena
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
)
|
|
|
|
type dummyMemDB struct{}
|
|
|
|
func (m *dummyMemDB) RevertVAddr(hdr *MemdbVlogHdr) {}
|
|
func (m *dummyMemDB) InspectNode(addr MemdbArenaAddr) (KeyFlagsGetter, MemdbArenaAddr) {
|
|
return nil, NullAddr
|
|
}
|
|
|
|
func TestBigValue(t *testing.T) {
|
|
assert := assert.New(t)
|
|
|
|
var vlog MemdbVlog[KeyFlagsGetter, *dummyMemDB]
|
|
vlog.AppendValue(MemdbArenaAddr{0, 0}, NullAddr, make([]byte, 80<<20))
|
|
assert.Equal(vlog.blockSize, maxBlockSize)
|
|
assert.Equal(len(vlog.blocks), 1)
|
|
|
|
cp := vlog.Checkpoint()
|
|
vlog.AppendValue(MemdbArenaAddr{0, 1}, NullAddr, make([]byte, 127<<20))
|
|
vlog.RevertToCheckpoint(&dummyMemDB{}, &cp)
|
|
|
|
assert.Equal(vlog.blockSize, maxBlockSize)
|
|
assert.Equal(len(vlog.blocks), 2)
|
|
assert.PanicsWithValue("alloc size is larger than max block size", func() {
|
|
vlog.AppendValue(MemdbArenaAddr{0, 2}, NullAddr, make([]byte, maxBlockSize+1))
|
|
})
|
|
}
|
|
|
|
func TestValueLargeThanBlock(t *testing.T) {
|
|
assert := assert.New(t)
|
|
var vlog MemdbVlog[KeyFlagsGetter, *dummyMemDB]
|
|
vlog.AppendValue(MemdbArenaAddr{0, 0}, NullAddr, make([]byte, 1))
|
|
vlog.AppendValue(MemdbArenaAddr{0, 1}, NullAddr, make([]byte, 4096))
|
|
assert.Equal(len(vlog.blocks), 2)
|
|
vAddr := vlog.AppendValue(MemdbArenaAddr{0, 2}, NullAddr, make([]byte, 3000))
|
|
assert.Equal(len(vlog.blocks), 2)
|
|
val := vlog.GetValue(vAddr)
|
|
assert.Equal(len(val), 3000)
|
|
}
|