diff --git a/cnet/service_test.go b/cnet/service_test.go
index ee85705..705e555 100644
--- a/cnet/service_test.go
+++ b/cnet/service_test.go
@@ -8,10 +8,10 @@ import (
 	"os"
 	"sync"
 	"testing"
-	"time"
 
 	"github.com/CPunch/gopenfusion/cnet"
 	"github.com/CPunch/gopenfusion/cnet/protocol"
+	"github.com/CPunch/gopenfusion/util"
 	"github.com/matryer/is"
 )
 
@@ -24,25 +24,6 @@ const (
 	maxDummyPeers = 5
 )
 
-func selectWithTimeout(ch <-chan struct{}, seconds int) bool {
-	select {
-	case <-ch:
-		return true
-	case <-time.After(time.Duration(seconds) * time.Second):
-		return false
-	}
-}
-
-func waitWithTimeout(wg *sync.WaitGroup, seconds int) bool {
-	done := make(chan struct{})
-	go func() {
-		defer close(done)
-		wg.Wait()
-	}()
-
-	return selectWithTimeout(done, seconds)
-}
-
 func TestMain(m *testing.M) {
 	var err error
 	srvcPort, err = cnet.RandomPort()
@@ -62,7 +43,7 @@ func TestService(t *testing.T) {
 	// shutdown service when test is done
 	defer func() {
 		cancel()
-		is.True(selectWithTimeout(srvc.Stopped(), timeout)) // wait for service to stop with timeout
+		is.True(util.SelectWithTimeout(srvc.Stopped(), timeout)) // wait for service to stop with timeout
 	}()
 
 	// our dummy packet handler
@@ -85,8 +66,8 @@ func TestService(t *testing.T) {
 	}
 
 	// run service
-	go func() { is.NoErr(srvc.Start()) }()              // srvc.Start error
-	is.True(selectWithTimeout(srvc.Started(), timeout)) // wait for service to start with timeout
+	go func() { is.NoErr(srvc.Start()) }()                   // srvc.Start error
+	is.True(util.SelectWithTimeout(srvc.Started(), timeout)) // wait for service to start with timeout
 
 	wg.Add(maxDummyPeers * 2) // 2 wg.Done() per peer for receiving packets
 	for i := 0; i < maxDummyPeers; i++ {
@@ -111,5 +92,5 @@ func TestService(t *testing.T) {
 		}()
 	}
 
-	is.True(waitWithTimeout(&wg, timeout)) // wait for all dummy peers to be done with timeout
+	is.True(util.WaitWithTimeout(&wg, timeout)) // wait for all dummy peers to be done with timeout
 }
diff --git a/util/util.go b/util/util.go
index 24d000f..4208723 100644
--- a/util/util.go
+++ b/util/util.go
@@ -1,7 +1,29 @@
 package util
 
-import "time"
+import (
+	"sync"
+	"time"
+)
 
 func GetTime() uint64 {
 	return uint64(time.Now().UnixMilli())
 }
+
+func SelectWithTimeout(ch <-chan struct{}, seconds int) bool {
+	select {
+	case <-ch:
+		return true
+	case <-time.After(time.Duration(seconds) * time.Second):
+		return false
+	}
+}
+
+func WaitWithTimeout(wg *sync.WaitGroup, seconds int) bool {
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		wg.Wait()
+	}()
+
+	return SelectWithTimeout(done, seconds)
+}