fix unit tests

controller/api/api_test.go

@@ -9,10 +9,13 @@ import (
 	"code.fbi.h-da.de/danet/gosdn/controller/store"
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/viper"
+	"google.golang.org/grpc/resolver"
 )
 
 func Test_Init(t *testing.T) {
 	viper.SetConfigFile("./api_test.toml")
+	resolver.SetDefaultScheme("passthrough")
+
 	if err := Init(context.TODO(), bufnet); err != nil {
 		t.Error(err)
 	}

controller/northbound/server/auth_interceptor_test.go

@@ -18,6 +18,7 @@ import (
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/metadata"
+	"google.golang.org/grpc/resolver"
 	"google.golang.org/grpc/status"
 	"google.golang.org/grpc/test/bufconn"
 )
@@ -68,6 +69,7 @@ func getTestAuthInterceptorServer(t *testing.T) (*AuthInterceptor, *UserServer,
 }
 
 func dialer(interceptorServer *AuthInterceptor, userServer *UserServer, roleServer *RoleServer, pluginServer *PluginInternalServer) func(context.Context, string) (net.Conn, error) {
+	resolver.SetDefaultScheme("passthrough")
 	listener := bufconn.Listen(1024 * 1024)
 
 	interceptor := interceptorServer
@@ -99,16 +101,16 @@ func TestAuthInterceptor_Unary(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	ctx := context.Background()
-	conn, err := grpc.DialContext(
-		ctx,
-		"",
+	dialerFunc := dialer(authServer, userServer, roleServer, pluginServer)
+	conn, err := grpc.NewClient("bufnet",
 		grpc.WithTransportCredentials(insecure.NewCredentials()),
-		grpc.WithContextDialer(dialer(authServer, userServer, roleServer, pluginServer)),
+		grpc.WithContextDialer(dialerFunc),
 	)
+
 	if err != nil {
 		t.Fatal(err)
 	}
+
 	defer func() {
 		if err := conn.Close(); err != nil {
 			log.Fatal(err)
@@ -197,16 +199,16 @@ func TestAuthInterceptor_Stream(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	ctx := context.Background()
-	conn, err := grpc.DialContext(
-		ctx,
-		"",
+	dialerFunc := dialer(authServer, userServer, roleServer, pluginServer)
+	conn, err := grpc.NewClient("bufnet",
 		grpc.WithTransportCredentials(insecure.NewCredentials()),
-		grpc.WithContextDialer(dialer(authServer, userServer, roleServer, pluginServer)),
+		grpc.WithContextDialer(dialerFunc),
 	)
+
 	if err != nil {
 		t.Fatal(err)
 	}
+
 	defer func() {
 		if err := conn.Close(); err != nil {
 			log.Fatal(err)