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all_test.go
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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package kv
import (
"encoding/binary"
"flag"
"fmt"
"io/ioutil"
"math"
"os"
"path"
"path/filepath"
"runtime"
"strings"
"sync"
"testing"
"github.com/cznic/fileutil"
"github.com/cznic/mathutil"
)
const sz0 = 144 // size of an empty KV DB
var oKeep = flag.Bool("keep", false, "do not delete test DB (some tests)")
var dbg = func(s string, va ...interface{}) {
_, fn, fl, _ := runtime.Caller(1)
fmt.Printf("%s:%d: ", path.Base(fn), fl)
fmt.Printf(s, va...)
fmt.Println()
}
func TestCreate(t *testing.T) {
const name = "_testdata/tempname"
os.Remove(name)
o := &Options{noClone: true}
db, err := Create(name, o)
if err != nil {
t.Fatal(err)
}
defer func() {
err := db.Close()
if err := os.Remove(name); err != nil {
t.Error(err)
}
if err := os.Remove(o._WAL); err != nil {
t.Error(err)
}
if err != nil {
t.Error(err)
}
}()
if _, err = Create(name, &Options{noClone: true}); err == nil {
t.Error("unexpected success")
return
}
if _, err = Open(name, &Options{noClone: true}); err == nil {
t.Error("unexpected success")
return
}
}
func TestCreateMem(t *testing.T) {
db, err := CreateMem(&Options{noClone: true})
if err != nil {
t.Fatal(err)
}
if err = db.Close(); err != nil {
t.Fatal(err)
}
}
func TestCreateTemp(t *testing.T) {
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
t.Fatal(err)
}
defer func() {
name := db.Name()
err := db.Close()
if err := os.Remove(name); err != nil {
t.Error(err)
}
if err := os.Remove(o._WAL); err != nil {
t.Error(err)
}
if err != nil {
t.Error(err)
}
}()
}
func TestOpen(t *testing.T) {
db, err := Open("_testdata/open.db", &Options{noClone: true})
if err != nil {
t.Fatal(err)
}
if err = db.Close(); err != nil {
t.Fatal(err)
}
}
func TestClose(t *testing.T) {
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
t.Fatal(err)
}
defer func(n string) {
db.Close()
os.Remove(n)
os.Remove(o._WAL)
}(db.Name())
go db.Close()
if err := db.Close(); err != nil {
t.Error(err)
return
}
if err := db.Close(); err != nil {
t.Error(err)
return
}
}
func TestName(t *testing.T) {
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
t.Fatal(err)
}
defer func(n string) {
db.Close()
os.Remove(n)
os.Remove(o._WAL)
}(db.Name())
if n := db.Name(); n == "" ||
!strings.Contains(n, "_testdata") ||
!strings.HasPrefix(filepath.Base(n), "temp") ||
!strings.HasSuffix(filepath.Base(n), ".db") ||
path.Base(n) == "temp.db" {
t.Error(n)
}
}
func TestSize(t *testing.T) {
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
t.Fatal(err)
}
defer func(n string) {
db.Close()
os.Remove(n)
os.Remove(o._WAL)
}(db.Name())
sz, err := db.Size()
if err != nil {
t.Error(err)
return
}
if sz != sz0 {
t.Error(sz, sz0)
}
}
func TestVerify(t *testing.T) {
o := &Options{noClone: true}
db, err := CreateTemp("", "temp", ".db", o)
if err != nil {
t.Fatal(err)
}
defer func() {
name := db.Name()
err := db.Close()
if err := os.Remove(name); err != nil {
t.Error(err)
}
if err := os.Remove(o._WAL); err != nil {
t.Error(err)
}
if err != nil {
t.Error(err)
}
}()
t.Log(db.Name(), o._WAL)
if err := db.Verify(nil, nil); err != nil {
t.Error(err)
}
}
//DONE xacts test
// ---- tested in lldb extensively
func n2b(n int) []byte {
var b [8]byte
binary.BigEndian.PutUint64(b[:], uint64(n))
return b[:]
}
func b2n(b []byte) int {
if len(b) != 8 {
return mathutil.MinInt
}
return int(binary.BigEndian.Uint64(b))
}
func fc() *mathutil.FC32 {
r, err := mathutil.NewFC32(0, math.MaxInt32, false)
if err != nil {
panic(err)
}
return r
}
func TestDelete(t *testing.T) {
const (
n = 500
m = 4
)
g := runtime.GOMAXPROCS(0)
defer runtime.GOMAXPROCS(g)
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
t.Fatal(err)
}
dbname := db.Name()
defer func(n string) {
db.Close()
switch *oKeep {
case true:
t.Log(n)
case false:
os.Remove(n)
os.Remove(o._WAL)
}
}(dbname)
rng := fc()
var keys []int
for i := 0; i < n*m; i++ {
k, v := rng.Next(), rng.Next()
keys = append(keys, k)
if err := db.Set(n2b(k), n2b(v)); err != nil {
t.Error(err)
return
}
}
c := make(chan int)
var wg sync.WaitGroup
x := 0
for i := 0; i < m; i++ {
wg.Add(1)
go func(start int) {
defer wg.Done()
<-c
for _, k := range keys[start : start+n] {
if err := db.Delete(n2b(k)); err != nil {
t.Error(err)
return
}
}
}(x)
x += n
}
close(c)
wg.Wait()
if err := db.Close(); err != nil {
t.Error(err)
return
}
fi, err := os.Stat(dbname)
if err != nil {
t.Error(err)
return
}
if sz := fi.Size(); sz != sz0 {
t.Error(sz, sz0)
}
}
func BenchmarkDelete16(b *testing.B) {
const (
m = 4
)
g := runtime.GOMAXPROCS(0)
defer runtime.GOMAXPROCS(g)
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
b.Fatal(err)
}
dbname := db.Name()
defer func(n string) {
db.Close()
os.Remove(n)
os.Remove(o._WAL)
}(dbname)
rng := fc()
var keys []int
for i := 0; i < b.N; i++ {
k, v := rng.Next(), rng.Next()
keys = append(keys, k)
if err := db.Set(n2b(k), n2b(v)); err != nil {
b.Error(err)
return
}
}
c := make(chan int)
var wg sync.WaitGroup
x := 0
for i := 0; i < m; i++ {
wg.Add(1)
go func(start int) {
defer wg.Done()
<-c
for _, k := range keys[start : start+b.N/m] {
db.Delete(n2b(k))
}
}(x)
x += b.N / m
}
b.ResetTimer()
close(c)
wg.Wait()
b.StopTimer()
}
func TestExtract(t *testing.T) {
const (
n = 500
m = 4
)
g := runtime.GOMAXPROCS(0)
defer runtime.GOMAXPROCS(g)
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
t.Fatal(err)
}
dbname := db.Name()
defer func(n string) {
db.Close()
switch *oKeep {
case true:
t.Log(n)
case false:
os.Remove(n)
os.Remove(o._WAL)
}
}(dbname)
rng := fc()
var keys, vals []int
for i := 0; i < n*m; i++ {
k, v := rng.Next(), rng.Next()
keys = append(keys, k)
vals = append(vals, v)
if err := db.Set(n2b(k), n2b(v)); err != nil {
t.Error(err)
return
}
}
c := make(chan int)
var wg sync.WaitGroup
x := 0
for i := 0; i < m; i++ {
wg.Add(1)
go func(start int) {
defer wg.Done()
<-c
for i, k := range keys[start : start+n] {
v, err := db.Extract(nil, n2b(k))
if err != nil {
t.Error(err)
return
}
if g, e := len(v), 8; g != e {
t.Error(err)
return
}
if g, e := b2n(v), vals[start+i]; g != e {
t.Errorf("index %#x, key %#x, got %#x, want %#x", i, k, g, e)
return
}
}
}(x)
x += n
}
close(c)
wg.Wait()
if err := db.Close(); err != nil {
t.Error(err)
return
}
fi, err := os.Stat(dbname)
if err != nil {
t.Error(err)
return
}
if sz := fi.Size(); sz != sz0 {
t.Error(sz, sz0)
}
}
func BenchmarkExtract16(b *testing.B) {
const (
m = 4
)
g := runtime.GOMAXPROCS(0)
defer runtime.GOMAXPROCS(g)
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
b.Fatal(err)
}
dbname := db.Name()
defer func(n string) {
db.Close()
os.Remove(n)
os.Remove(o._WAL)
}(dbname)
rng := fc()
var keys, vals []int
for i := 0; i < b.N; i++ {
k, v := rng.Next(), rng.Next()
keys = append(keys, k)
vals = append(vals, v)
if err := db.Set(n2b(k), n2b(v)); err != nil {
b.Error(err)
return
}
}
c := make(chan int)
var wg sync.WaitGroup
x := 0
for i := 0; i < m; i++ {
wg.Add(1)
go func(start int) {
defer wg.Done()
buf := make([]byte, 8)
<-c
for _, k := range keys[start : start+b.N/m] {
db.Extract(buf, n2b(k))
}
}(x)
x += b.N / m
}
b.ResetTimer()
close(c)
wg.Wait()
b.StopTimer()
}
func TestFirst(t *testing.T) {
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
t.Fatal(err)
}
dbname := db.Name()
defer func(n string) {
db.Close()
os.Remove(n)
os.Remove(o._WAL)
}(dbname)
k, v, err := db.First()
if err != nil {
t.Error(err)
return
}
if k != nil {
t.Error(k)
return
}
if v != nil {
t.Error(v)
return
}
if err := db.Set(n2b(10), n2b(100)); err != nil {
t.Error(err)
return
}
k, v, err = db.First()
if err != nil {
t.Error(err)
return
}
if len(k) != 8 {
t.Error(k)
return
}
if g, e := b2n(k), 10; g != e {
t.Error(g, e)
return
}
if len(v) != 8 {
t.Error(v)
return
}
if g, e := b2n(v), 100; g != e {
t.Error(g, e)
return
}
if err := db.Set(n2b(20), n2b(200)); err != nil {
t.Error(err)
return
}
k, v, err = db.First()
if err != nil {
t.Error(err)
return
}
if len(k) != 8 {
t.Error(k)
return
}
if g, e := b2n(k), 10; g != e {
t.Error(g, e)
return
}
if len(v) != 8 {
t.Error(v)
return
}
if g, e := b2n(v), 100; g != e {
t.Error(g, e)
return
}
if err := db.Set(n2b(5), n2b(50)); err != nil {
t.Error(err)
return
}
k, v, err = db.First()
if err != nil {
t.Error(err)
return
}
if len(k) != 8 {
t.Error(k)
return
}
if g, e := b2n(k), 5; g != e {
t.Error(g, e)
return
}
if len(v) != 8 {
t.Error(v)
return
}
if g, e := b2n(v), 50; g != e {
t.Error(g, e)
return
}
}
func BenchmarkFirst16(b *testing.B) {
const n = 5000
g := runtime.GOMAXPROCS(0)
defer runtime.GOMAXPROCS(g)
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
b.Fatal(err)
}
dbname := db.Name()
defer func(n string) {
db.Close()
os.Remove(n)
os.Remove(o._WAL)
}(dbname)
rng := fc()
for i := 0; i < n; i++ {
if err := db.Set(n2b(rng.Next()), n2b(rng.Next())); err != nil {
b.Fatal(err)
}
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
db.First()
}
b.StopTimer()
}
func TestGet(t *testing.T) {
const (
n = 800
m = 4
)
g := runtime.GOMAXPROCS(0)
defer runtime.GOMAXPROCS(g)
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
t.Fatal(err)
}
dbname := db.Name()
defer func(n string) {
db.Close()
switch *oKeep {
case true:
t.Log(n)
case false:
os.Remove(n)
os.Remove(o._WAL)
}
}(dbname)
rng := fc()
var keys, vals []int
for i := 0; i < n*m; i++ {
k, v := rng.Next(), rng.Next()
keys = append(keys, k)
vals = append(vals, v)
if err := db.Set(n2b(k), n2b(v)); err != nil {
t.Error(err)
return
}
}
c := make(chan int)
var wg sync.WaitGroup
x := 0
for i := 0; i < m; i++ {
wg.Add(1)
go func(start int) {
defer wg.Done()
buf := make([]byte, 8)
<-c
for i, k := range keys[start : start+n] {
v, err := db.Get(buf, n2b(k))
if err != nil {
t.Error(err)
return
}
if g, e := len(v), 8; g != e {
t.Error(err)
return
}
if g, e := b2n(v), vals[start+i]; g != e {
t.Errorf("index %#x, key %#x, got %#x, want %#x", i, k, g, e)
return
}
}
}(x)
x += n
}
close(c)
wg.Wait()
}
func BenchmarkGet16(b *testing.B) {
const (
m = 4
)
g := runtime.GOMAXPROCS(0)
defer runtime.GOMAXPROCS(g)
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
b.Fatal(err)
}
dbname := db.Name()
defer func(n string) {
db.Close()
os.Remove(n)
os.Remove(o._WAL)
}(dbname)
rng := fc()
var keys, vals []int
for i := 0; i < b.N; i++ {
k, v := rng.Next(), rng.Next()
keys = append(keys, k)
vals = append(vals, v)
if err := db.Set(n2b(k), n2b(v)); err != nil {
b.Error(err)
return
}
}
c := make(chan int)
var wg sync.WaitGroup
x := 0
for i := 0; i < m; i++ {
wg.Add(1)
go func(start int) {
defer wg.Done()
buf := make([]byte, 8)
<-c
for _, k := range keys[start : start+b.N/m] {
db.Get(buf, n2b(k))
}
}(x)
x += b.N / m
}
b.ResetTimer()
close(c)
wg.Wait()
b.StopTimer()
}
func TestInc(t *testing.T) {
g := runtime.GOMAXPROCS(0)
defer runtime.GOMAXPROCS(g)
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
t.Fatal(err)
}
dbname := db.Name()
defer func(n string) {
db.Close()
switch *oKeep {
case true:
t.Log(n)
case false:
os.Remove(n)
os.Remove(o._WAL)
}
}(dbname)
v, err := db.Inc(nil, 1)
if err != nil {
t.Error(err)
return
}
if g, e := v, int64(1); g != e {
t.Error(g, e)
return
}
v, err = db.Inc(nil, 2)
if err != nil {
t.Error(err)
return
}
if g, e := v, int64(3); g != e {
t.Error(g, e)
return
}
if err := db.Set(nil, nil); err != nil {
t.Error(err)
return
}
v, err = db.Inc(nil, 4)
if err != nil {
t.Error(err)
return
}
if g, e := v, int64(4); g != e {
t.Error(g, e)
return
}
if err := db.Set(nil, []byte{1, 2, 3, 4, 5, 6, 7, 8, 9}); err != nil {
t.Error(err)
return
}
v, err = db.Inc(nil, 5)
if err != nil {
t.Error(err)
return
}
if g, e := v, int64(5); g != e {
t.Error(g, e)
return
}
}
func TestInc2(t *testing.T) {
const (
n = 10000
m = 4
)
g := runtime.GOMAXPROCS(0)
defer runtime.GOMAXPROCS(g)
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
t.Fatal(err)
}
dbname := db.Name()
defer func(n string) {
db.Close()
switch *oKeep {
case true:
t.Log(n)
case false:
os.Remove(n)
os.Remove(o._WAL)
}
}(dbname)
c := make(chan int)
var wg sync.WaitGroup
sum := 0
for i := 0; i < m; i++ {
wg.Add(1)
go func(n, delta int) {
defer wg.Done()
<-c
for i := 0; i < n; i++ {
if _, err := db.Inc(nil, int64(delta)); err != nil {
t.Error(err)
return
}
}
}(n, i)
sum += n * i
}
close(c)
wg.Wait()
v, err := db.Get(nil, nil)
if err != nil {
t.Error(err)
return
}
if n := len(v); n != 8 {
t.Error(n, 8)
return
}
if g, e := b2n(v), sum; g != e {
t.Errorf("%#x %#x", g, e)
}
}
func BenchmarkInc(b *testing.B) {
const (
m = 4
)
g := runtime.GOMAXPROCS(0)
defer runtime.GOMAXPROCS(g)
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
b.Fatal(err)
}
dbname := db.Name()
defer func(n string) {
db.Close()
os.Remove(n)
os.Remove(o._WAL)
}(dbname)
c := make(chan int)
var wg sync.WaitGroup
for i := 0; i < m; i++ {
wg.Add(1)
go func(n, delta int) {
defer wg.Done()
<-c
for i := 0; i < b.N/m; i++ {
db.Inc(nil, int64(delta))
}
}(3*i, 5*i)
}
b.ResetTimer()
close(c)
wg.Wait()
b.StopTimer()
}
func TestLast(t *testing.T) {
o := &Options{noClone: true}
db, err := CreateTemp("_testdata", "temp", ".db", o)
if err != nil {
t.Fatal(err)
}
dbname := db.Name()
defer func(n string) {
db.Close()
os.Remove(n)
os.Remove(o._WAL)
}(dbname)
k, v, err := db.Last()
if err != nil {
t.Error(err)
return
}
if k != nil {
t.Error(k)
return
}
if v != nil {
t.Error(v)
return
}
if err := db.Set(n2b(10), n2b(100)); err != nil {
t.Error(err)
return
}
k, v, err = db.Last()
if err != nil {
t.Error(err)
return
}
if len(k) != 8 {
t.Error(k)
return
}
if g, e := b2n(k), 10; g != e {
t.Error(g, e)
return
}
if len(v) != 8 {
t.Error(v)
return
}