diff --git a/go.mod b/go.mod
index 95e5734..37e0437 100644
--- a/go.mod
+++ b/go.mod
@@ -13,7 +13,6 @@ require (
 	github.com/google/uuid v1.3.0
 	github.com/pkg/errors v0.9.1
 	github.com/sirupsen/logrus v1.8.1
-	github.com/stretchr/testify v1.8.3
 	github.com/urfave/cli v1.22.5
 	gopkg.in/yaml.v2 v2.4.0
 )
@@ -22,7 +21,6 @@ require (
 	github.com/bytedance/sonic v1.9.1 // indirect
 	github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.2 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
@@ -40,7 +38,6 @@ require (
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/pelletier/go-toml/v2 v2.0.8 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/russross/blackfriday/v2 v2.0.1 // indirect
 	github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
 	github.com/tim-ywliu/nested-logrus-formatter v1.3.2 // indirect
diff --git a/internal/sbi/consumer/nrf_service.go b/internal/sbi/consumer/nrf_service.go
index 2040f84..73285c5 100644
--- a/internal/sbi/consumer/nrf_service.go
+++ b/internal/sbi/consumer/nrf_service.go
@@ -150,7 +150,7 @@ func (s *nnrfService) RegisterNFInstance(ctx context.Context) (
 	var nf models.NfProfile
 	var res *http.Response
 	for {
-		nf, res, err = client.NFInstanceIDDocumentApi.RegisterNFInstance(context.TODO(), ausfContext.NfId, nfProfile)
+		nf, res, err = client.NFInstanceIDDocumentApi.RegisterNFInstance(ctx, ausfContext.NfId, nfProfile)
 		if err != nil || res == nil {
 			logger.ConsumerLog.Errorf("AUSF register to NRF Error[%v]", err)
 			time.Sleep(2 * time.Second)
diff --git a/internal/sbi/server.go b/internal/sbi/server.go
index a4db49f..aaab0cc 100644
--- a/internal/sbi/server.go
+++ b/internal/sbi/server.go
@@ -78,7 +78,11 @@ func (s *Server) Run(traceCtx context.Context, wg *sync.WaitGroup) error {
 	return nil
 }
 
-func (s *Server) Stop() {
+func (s *Server) Shutdown() {
+	s.shutdownHttpServer()
+}
+
+func (s *Server) shutdownHttpServer() {
 	const defaultShutdownTimeout time.Duration = 2 * time.Second
 
 	if s.httpServer != nil {
diff --git a/pkg/service/init.go b/pkg/service/init.go
index f4f8217..b69683a 100644
--- a/pkg/service/init.go
+++ b/pkg/service/init.go
@@ -93,7 +93,7 @@ func (a *AusfApp) Config() *factory.Config {
 	return a.cfg
 }
 
-func (c *AusfApp) SetLogEnable(enable bool) {
+func (a *AusfApp) SetLogEnable(enable bool) {
 	logger.MainLog.Infof("Log enable is set to [%v]", enable)
 	if enable && logger.Log.Out == os.Stderr {
 		return
@@ -101,7 +101,7 @@ func (c *AusfApp) SetLogEnable(enable bool) {
 		return
 	}
 
-	c.Config().SetLogEnable(enable)
+	a.Config().SetLogEnable(enable)
 	if enable {
 		logger.Log.SetOutput(os.Stderr)
 	} else {
@@ -109,7 +109,7 @@ func (c *AusfApp) SetLogEnable(enable bool) {
 	}
 }
 
-func (c *AusfApp) SetLogLevel(level string) {
+func (a *AusfApp) SetLogLevel(level string) {
 	lvl, err := logrus.ParseLevel(level)
 	if err != nil {
 		logger.MainLog.Warnf("Log level [%s] is invalid", level)
@@ -121,17 +121,17 @@ func (c *AusfApp) SetLogLevel(level string) {
 		return
 	}
 
-	c.Config().SetLogLevel(level)
+	a.Config().SetLogLevel(level)
 	logger.Log.SetLevel(lvl)
 }
 
-func (c *AusfApp) SetReportCaller(reportCaller bool) {
+func (a *AusfApp) SetReportCaller(reportCaller bool) {
 	logger.MainLog.Infof("Report Caller is set to [%v]", reportCaller)
 	if reportCaller == logger.Log.ReportCaller {
 		return
 	}
 
-	c.Config().SetLogReportCaller(reportCaller)
+	a.Config().SetLogReportCaller(reportCaller)
 	logger.Log.SetReportCaller(reportCaller)
 }
 
@@ -160,13 +160,13 @@ func (a *AusfApp) listenShutdownEvent() {
 	a.Terminate()
 }
 
-func (c *AusfApp) Terminate() {
+func (a *AusfApp) Terminate() {
 	logger.MainLog.Infof("Terminating AUSF...")
-	c.cancel()
-	c.CallServerStop()
+	a.cancel()
+	a.CallServerStop()
 
 	// deregister with NRF
-	problemDetails, err := c.Consumer().SendDeregisterNFInstance()
+	problemDetails, err := a.Consumer().SendDeregisterNFInstance()
 	if problemDetails != nil {
 		logger.MainLog.Errorf("Deregister NF instance Failed Problem[%+v]", problemDetails)
 	} else if err != nil {
@@ -179,7 +179,7 @@ func (c *AusfApp) Terminate() {
 
 func (a *AusfApp) CallServerStop() {
 	if a.sbiServer != nil {
-		a.sbiServer.Stop()
+		a.sbiServer.Shutdown()
 	}
 }