micro: add simple test

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

service.go

@@ -392,8 +392,12 @@ type nameIface interface {
 	Name() string
 }
 
-func getNameIndex(n string, ifaces ...interface{}) int {
+func getNameIndex(n string, ifaces interface{}) int {
-	for idx, iface := range ifaces {
+	values, ok := ifaces.([]interface{})
+	if !ok {
+		return 0
+	}
+	for idx, iface := range values {
 		if ifc, ok := iface.(nameIface); ok && ifc.Name() == n {
 			return idx
 		}

service_test.go

@@ -0,0 +1,22 @@
+package micro
+
+import (
+	"testing"
+)
+
+type testItem struct {
+	name string
+}
+
+func (ti *testItem) Name() string {
+	return ti.name
+}
+
+func TestGetNameIndex(t *testing.T) {
+	item1 := &testItem{name: "first"}
+	item2 := &testItem{name: "second"}
+	items := []interface{}{item1, item2}
+	if idx := getNameIndex("second", items); idx != 1 {
+		t.Fatalf("getNameIndex func error, item not found")
+	}
+}