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kv_test.go
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/
kv_test.go
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package stud
import (
"fmt"
"math/rand"
"os"
"strconv"
"strings"
"testing"
"time"
)
func TestDB(t *testing.T) {
os.Remove("test.db")
rand.Seed(time.Now().Unix())
dbg("stage 1")
m, err := Open("test.db", 1<<12)
panicerr(err)
x := map[int]int{}
start := time.Now()
for i := 0; ; i++ {
v := rand.Int()
if err := m.Put(strconv.Itoa(v), strings.NewReader(strconv.Itoa(v))); err != nil {
dbg("put #%d: %v", i, err)
break
}
x[v] = v
}
dbg("put cost: %0.6fs", time.Since(start).Seconds()/float64(len(x)))
start = time.Now()
for k, v := range x {
v2, _ := m.Get(strconv.Itoa(k))
buf, _ := v2.ReadAll()
if string(buf) != strconv.Itoa(v) {
fmt.Println(k, v2, v)
}
}
dbg("get cost: %0.6fs", time.Since(start).Seconds()/float64(len(x)))
// fmt.Println(m.Rebuild())
m.Range(func(r *Reader) bool {
buf, _ := r.ReadAll()
if string(buf) != r.Key {
fmt.Println(buf, r.Key)
}
return true
})
m._writeDirty(true)
m.Close()
dbg("stage 2")
m, err = Open("test.db", 128)
panicerr(err)
m.Close()
}