VOL-1938 Unit test cases for router.go

Change-Id: I5f6fcbc97b69127ac0e97b483e397929674b7121
diff --git a/internal/pkg/afrouter/router_test.go b/internal/pkg/afrouter/router_test.go
new file mode 100644
index 0000000..2da77e3
--- /dev/null
+++ b/internal/pkg/afrouter/router_test.go
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+
+ * http://www.apache.org/licenses/LICENSE-2.0
+
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package afrouter
+
+import (
+	"github.com/opencord/voltha-go/common/log"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func init() {
+	log.SetDefaultLogger(log.JSON, log.DebugLevel, nil)
+	log.AddPackage(log.JSON, log.WarnLevel, nil)
+}
+
+func TestRouter(t *testing.T) {
+	routeConfig, routerConfig := MakeRoundRobinTestConfig(1, 1)
+	router, err := newRouter(routerConfig)
+	assert.NotNil(t, router)
+	assert.NotNil(t, routeConfig)
+	assert.Nil(t, err)
+}
+
+func TestSubRouter(t *testing.T) {
+	routeConfig, routerConfig := MakeRoundRobinTestConfig(1, 1)
+	router, err := newSubRouter(routerConfig, routeConfig)
+	assert.NotNil(t, router)
+	assert.Nil(t, err)
+}
+
+func TestRouterNoProtoService(t *testing.T) {
+	routeConfig, routerConfig := MakeRoundRobinTestConfig(1, 1)
+	routerConfig.ProtoService = ""
+
+	_, err := newRouter(routerConfig)
+	assert.NotNil(t, routeConfig)
+	assert.NotNil(t, err)
+}