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bltree_test.go
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bltree_test.go
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package main
import (
"bytes"
"encoding/binary"
"fmt"
"os"
"sync"
"testing"
"time"
)
func TestBLTree_collapseRoot(t *testing.T) {
_ = os.Remove("data/collapse_root_test.db")
type fields struct {
mgr *BufMgr
}
tests := []struct {
name string
fields fields
want BLTErr
}{
{
name: "collapse root",
fields: fields{
mgr: NewBufMgr("data/collapse_root_test.db", 13, 20),
},
want: BLTErrOk,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
tree := NewBLTree(tt.fields.mgr)
for _, key := range [][]byte{
{1, 1, 1, 1},
{1, 1, 1, 2},
} {
if err := tree.insertKey(key, 0, [BtId]byte{1}, true); err != BLTErrOk {
t.Errorf("insertKey() = %v, want %v", err, BLTErrOk)
}
}
if rootAct := tree.mgr.pagePool[RootPage].Act; rootAct != 1 {
t.Errorf("rootAct = %v, want %v", rootAct, 1)
}
if childAct := tree.mgr.pagePool[RootPage+1].Act; childAct != 3 {
t.Errorf("childAct = %v, want %v", childAct, 3)
}
var set PageSet
set.latch = tree.mgr.PinLatch(RootPage, true, &tree.reads, &tree.writes)
set.page = tree.mgr.MapPage(set.latch)
if got := tree.collapseRoot(&set); got != tt.want {
t.Errorf("collapseRoot() = %v, want %v", got, tt.want)
}
if rootAct := tree.mgr.pagePool[RootPage].Act; rootAct != 3 {
t.Errorf("after collapseRoot rootAct = %v, want %v", rootAct, 3)
}
if !tree.mgr.pagePool[RootPage+1].Free {
t.Errorf("after collapseRoot childFree = %v, want %v", false, true)
}
})
}
}
func TestBLTree_cleanPage_full_page(t *testing.T) {
_ = os.Remove("data/bltree_clean_page.db")
mgr := NewBufMgr("data/bltree_clean_page.db", 15, 16*7)
bltree := NewBLTree(mgr)
f, err := os.OpenFile("testdata/page_for_clean", os.O_RDWR, 0666)
if err != nil {
t.Fatal(err)
}
// ファイルの数値をすべてバイト配列に読み込む
// ファイルの内容はすべて文字列で、空白文字で区切られている
var data []byte
for {
var b byte
_, err := fmt.Fscanf(f, "%d", &b)
if err != nil {
break
}
data = append(data, b)
}
fmt.Printf("size: %v\n", len(data))
set := PageSet{
page: NewPage(mgr.pageDataSize),
latch: &LatchSet{},
}
copy(set.page.Data, data)
set.page.PageHeader = PageHeader{
Cnt: 1214,
Act: 1170,
Min: 7302,
Garbage: 6720,
Bits: 15,
Free: false,
Lvl: 0,
Kill: false,
Right: [BtId]byte{0, 0, 0, 0, 1, 74},
}
res := bltree.cleanPage(&set, 8, 439, BtId)
if res != 0 {
t.Errorf("cleanPage() = %v, want %v", res, 0)
}
}
func TestBLTree_insert_and_find(t *testing.T) {
mgr := NewBufMgr("data/bltree_insert_and_find.db", 13, 20)
bltree := NewBLTree(mgr)
if valLen, _, _ := bltree.findKey([]byte{1, 1, 1, 1}, BtId); valLen >= 0 {
t.Errorf("findKey() = %v, want %v", valLen, -1)
}
if err := bltree.insertKey([]byte{1, 1, 1, 1}, 0, [BtId]byte{0, 0, 0, 0, 0, 1}, true); err != BLTErrOk {
t.Errorf("insertKey() = %v, want %v", err, BLTErrOk)
}
_, foundKey, _ := bltree.findKey([]byte{1, 1, 1, 1}, BtId)
if bytes.Compare(foundKey, []byte{1, 1, 1, 1}) != 0 {
t.Errorf("findKey() = %v, want %v", foundKey, []byte{1, 1, 1, 1})
}
}
func TestBLTree_insert_and_find_many(t *testing.T) {
_ = os.Remove(`data/bltree_insert_and_find_many.db`)
mgr := NewBufMgr("data/bltree_insert_and_find_many.db", 13, 48)
bltree := NewBLTree(mgr)
num := uint64(160000)
for i := uint64(0); i < num; i++ {
bs := make([]byte, 8)
binary.BigEndian.PutUint64(bs, i)
if err := bltree.insertKey(bs, 0, [BtId]byte{}, true); err != BLTErrOk {
t.Errorf("insertKey() = %v, want %v", err, BLTErrOk)
}
}
for i := uint64(0); i < num; i++ {
bs := make([]byte, 8)
binary.BigEndian.PutUint64(bs, i)
if _, foundKey, _ := bltree.findKey(bs, BtId); bytes.Compare(foundKey, bs) != 0 {
t.Errorf("findKey() = %v, want %v", foundKey, bs)
}
}
}
func TestBLTree_insert_and_find_concurrently(t *testing.T) {
_ = os.Remove(`data/insert_and_find_concurrently.db`)
mgr := NewBufMgr("data/insert_and_find_concurrently.db", 13, 16*7)
keyTotal := 1600000
keys := make([][]byte, keyTotal)
for i := 0; i < keyTotal; i++ {
bs := make([]byte, 8)
binary.BigEndian.PutUint64(bs, uint64(i))
keys[i] = bs
}
insertAndFindConcurrently(t, 7, mgr, keys)
}
func TestBLTree_insert_and_find_concurrently_by_little_endian(t *testing.T) {
_ = os.Remove(`data/insert_and_find_concurrently_by_little_endian.db`)
mgr := NewBufMgr("data/insert_and_find_concurrently_by_little_endian.db", 13, 16*7)
keyTotal := 1600000
keys := make([][]byte, keyTotal)
for i := 0; i < keyTotal; i++ {
bs := make([]byte, 8)
binary.LittleEndian.PutUint64(bs, uint64(i))
keys[i] = bs
}
insertAndFindConcurrently(t, 7, mgr, keys)
}
func insertAndFindConcurrently(t *testing.T, routineNum int, mgr *BufMgr, keys [][]byte) {
wg := sync.WaitGroup{}
wg.Add(routineNum)
keyTotal := len(keys)
start := time.Now()
for r := 0; r < routineNum; r++ {
go func(n int) {
bltree := NewBLTree(mgr)
for i := 0; i < keyTotal; i++ {
if i%routineNum != n {
continue
}
if err := bltree.insertKey(keys[i], 0, [BtId]byte{}, true); err != BLTErrOk {
t.Errorf("in goroutine%d insertKey() = %v, want %v", n, err, BLTErrOk)
}
if _, foundKey, _ := bltree.findKey(keys[i], BtId); bytes.Compare(foundKey, keys[i]) != 0 {
t.Errorf("in goroutine%d findKey() = %v, want %v", n, foundKey, keys[i])
}
}
wg.Done()
}(r)
}
wg.Wait()
t.Logf("insert %d keys concurrently. duration = %v", keyTotal, time.Since(start))
wg = sync.WaitGroup{}
wg.Add(routineNum)
start = time.Now()
for r := 0; r < routineNum; r++ {
go func(n int) {
bltree := NewBLTree(mgr)
for i := 0; i < keyTotal; i++ {
if i%routineNum != n {
continue
}
if _, foundKey, _ := bltree.findKey(keys[i], BtId); bytes.Compare(foundKey, keys[i]) != 0 {
t.Errorf("findKey() = %v, want %v, i = %d", foundKey, keys[i], i)
}
}
wg.Done()
}(r)
}
wg.Wait()
t.Logf("find %d keys. duration = %v", keyTotal, time.Since(start))
}
func TestBLTree_delete(t *testing.T) {
mgr := NewBufMgr("data/bltree_delete.db", 13, 20)
bltree := NewBLTree(mgr)
key := []byte{1, 1, 1, 1}
if err := bltree.insertKey(key, 0, [BtId]byte{0, 0, 0, 0, 0, 1}, true); err != BLTErrOk {
t.Errorf("insertKey() = %v, want %v", err, BLTErrOk)
}
if err := bltree.deleteKey(key, 0); err != BLTErrOk {
t.Errorf("deleteKey() = %v, want %v", err, BLTErrOk)
}
if found, _, _ := bltree.findKey(key, BtId); found != -1 {
t.Errorf("findKey() = %v, want %v", found, -1)
}
}
func TestBLTree_deleteMany(t *testing.T) {
_ = os.Remove(`data/bltree_delete_many.db`)
mgr := NewBufMgr("data/bltree_delete_many.db", 13, 16*7)
bltree := NewBLTree(mgr)
keyTotal := 160000
keys := make([][]byte, keyTotal)
for i := 0; i < keyTotal; i++ {
bs := make([]byte, 8)
binary.LittleEndian.PutUint64(bs, uint64(i))
keys[i] = bs
}
for i := range keys {
if err := bltree.insertKey(keys[i], 0, [BtId]byte{0, 0, 0, 0, 0, 0}, true); err != BLTErrOk {
t.Errorf("insertKey() = %v, want %v", err, BLTErrOk)
}
if i%2 == 0 {
if err := bltree.deleteKey(keys[i], 0); err != BLTErrOk {
t.Errorf("deleteKey() = %v, want %v", err, BLTErrOk)
}
}
}
for i := range keys {
if i%2 == 0 {
if found, _, _ := bltree.findKey(keys[i], BtId); found != -1 {
t.Errorf("findKey() = %v, want %v, key %v", found, -1, keys[i])
}
} else {
if found, _, _ := bltree.findKey(keys[i], BtId); found != 6 {
t.Errorf("findKey() = %v, want %v, key %v", found, 6, keys[i])
}
}
}
}
func TestBLTree_deleteAll(t *testing.T) {
_ = os.Remove(`data/bltree_delete_all.db`)
mgr := NewBufMgr("data/bltree_delete_all.db", 13, 16*7)
bltree := NewBLTree(mgr)
keyTotal := 1600000
keys := make([][]byte, keyTotal)
for i := 0; i < keyTotal; i++ {
bs := make([]byte, 8)
binary.LittleEndian.PutUint64(bs, uint64(i))
keys[i] = bs
}
for i := range keys {
if err := bltree.insertKey(keys[i], 0, [BtId]byte{0, 0, 0, 0, 0, 0}, true); err != BLTErrOk {
t.Errorf("insertKey() = %v, want %v", err, BLTErrOk)
}
}
for i := range keys {
if err := bltree.deleteKey(keys[i], 0); err != BLTErrOk {
t.Errorf("deleteKey() = %v, want %v", err, BLTErrOk)
}
if found, _, _ := bltree.findKey(keys[i], BtId); found != -1 {
t.Errorf("findKey() = %v, want %v, key %v", found, -1, keys[i])
}
}
}
func TestBLTree_deleteManyConcurrently(t *testing.T) {
_ = os.Remove("data/bltree_delete_many_concurrently.db")
mgr := NewBufMgr("data/bltree_delete_many_concurrently.db", 13, 16*7)
keyTotal := 1600000
routineNum := 7
keys := make([][]byte, keyTotal)
for i := 0; i < keyTotal; i++ {
bs := make([]byte, 8)
binary.LittleEndian.PutUint64(bs, uint64(i))
keys[i] = bs
}
wg := sync.WaitGroup{}
wg.Add(routineNum)
start := time.Now()
for r := 0; r < routineNum; r++ {
go func(n int) {
bltree := NewBLTree(mgr)
for i := 0; i < keyTotal; i++ {
if i%routineNum != n {
continue
}
if err := bltree.insertKey(keys[i], 0, [BtId]byte{}, true); err != BLTErrOk {
t.Errorf("in goroutine%d insertKey() = %v, want %v", n, err, BLTErrOk)
}
if i%2 == (n % 2) {
if err := bltree.deleteKey(keys[i], 0); err != BLTErrOk {
t.Errorf("deleteKey() = %v, want %v", err, BLTErrOk)
}
}
if i%2 == (n % 2) {
if found, _, _ := bltree.findKey(keys[i], BtId); found != -1 {
t.Errorf("findKey() = %v, want %v, key %v", found, -1, keys[i])
panic("findKey() != -1")
}
} else {
if found, _, _ := bltree.findKey(keys[i], BtId); found != 6 {
t.Errorf("findKey() = %v, want %v, key %v", found, 6, keys[i])
panic("findKey() != 6")
}
}
}
wg.Done()
}(r)
}
wg.Wait()
t.Logf("insert %d keys and delete skip one concurrently. duration = %v", keyTotal, time.Since(start))
wg = sync.WaitGroup{}
wg.Add(routineNum)
start = time.Now()
for r := 0; r < routineNum; r++ {
go func(n int) {
bltree := NewBLTree(mgr)
for i := 0; i < keyTotal; i++ {
if i%routineNum != n {
continue
}
if i%2 == (n % 2) {
if found, _, _ := bltree.findKey(keys[i], BtId); found != -1 {
t.Errorf("findKey() = %v, want %v, key %v", found, -1, keys[i])
}
} else {
if found, _, _ := bltree.findKey(keys[i], BtId); found != 6 {
t.Errorf("findKey() = %v, want %v, key %v", found, 6, keys[i])
}
}
}
wg.Done()
}(r)
}
wg.Wait()
t.Logf("find %d keys. duration = %v", keyTotal, time.Since(start))
}
func TestBLTree_restart(t *testing.T) {
_ = os.Remove(`data/bltree_restart.db`)
mgr := NewBufMgr("data/bltree_restart.db", 13, 48)
bltree := NewBLTree(mgr)
firstNum := uint64(1000)
for i := uint64(0); i <= firstNum; i++ {
bs := make([]byte, 8)
binary.BigEndian.PutUint64(bs, i)
if err := bltree.insertKey(bs, 0, [BtId]byte{}, true); err != BLTErrOk {
t.Errorf("insertKey() = %v, want %v", err, BLTErrOk)
}
}
mgr.Close()
mgr = NewBufMgr("data/bltree_restart.db", 15, 48)
bltree = NewBLTree(mgr)
secondNum := uint64(2000)
for i := firstNum; i <= secondNum; i++ {
bs := make([]byte, 8)
binary.BigEndian.PutUint64(bs, i)
if err := bltree.insertKey(bs, 0, [BtId]byte{}, true); err != BLTErrOk {
t.Errorf("insertKey() = %v, want %v", err, BLTErrOk)
}
}
for i := uint64(0); i <= secondNum; i++ {
bs := make([]byte, 8)
binary.BigEndian.PutUint64(bs, i)
if _, foundKey, _ := bltree.findKey(bs, BtId); bytes.Compare(foundKey, bs) != 0 {
t.Errorf("findKey() = %v, want %v", foundKey, bs)
}
}
}