fix test

Author: roseduan

db_test.go

@@ -8,6 +8,7 @@ import (
 	"math/rand"
 	"os"
 	"path/filepath"
+	"runtime"
 	"testing"
 	"time"
 )
@@ -69,6 +70,9 @@ func TestLogFileGC(t *testing.T) {
 func destroyDB(db *RoseDB) {
 	if db != nil {
 		_ = db.Close()
+		if runtime.GOOS == "windows" {
+			time.Sleep(time.Millisecond * 100)
+		}
 		err := os.RemoveAll(db.opts.DBPath)
 		if err != nil {
 			logger.Errorf("destroy db err: %v", err)

strs.go

@@ -2,7 +2,6 @@ package rosedb
 
 import (
 	"bytes"
-	"encoding/binary"
 	"errors"
 	"github.com/flower-corp/rosedb/logfile"
 	"github.com/flower-corp/rosedb/logger"
@@ -331,8 +330,7 @@ func (db *RoseDB) StrLen(key []byte) int {
 	if err != nil {
 		return 0
 	}
-
-	return binary.Size(val)
+	return len(val)
 }
 
 // Count returns the total number of keys of String.