[enhance] return empty list instead of nil in api list loadbalancer

test/lb_test.go

@@ -199,6 +199,24 @@ func TestListLoadBalancer(t *ltesting.T) {
 	t.Log("PASS")
 }
 
+func TestListLoadBalancerByTagsSuccess(t *ltesting.T) {
+	vngcloud := validSdkConfig()
+	opt := lslbv2.NewListLoadBalancersRequest(1, 10).
+		WithTags("vks-owned-cluster", "hcm03a_user-11412_k8s-a3c03d8e-344c-4a1e-98e0-6d9999ac8077")
+
+	lbs, sdkerr := vngcloud.VLBGateway().V2().LoadBalancerService().ListLoadBalancers(opt)
+	if sdkerr != nil {
+		t.Fatalf("Expect nil but got %+v", sdkerr)
+	}
+
+	if lbs == nil {
+		t.Fatalf("Expect not nil but got nil")
+	}
+
+	t.Log("Result: ", lbs)
+	t.Log("PASS")
+}
+
 func TestCreatePoolWithoutMembersSuccess(t *ltesting.T) {
 	vngcloud := validSdkHannibalConfig()
 	opt := lslbv2.NewCreatePoolRequest("cuongdm3-test-pool-7", lslbv2.PoolProtocolTCP).

vngcloud/services/loadbalancer/v2/loadbalancer_response.go

@@ -63,7 +63,13 @@ func (s *GetLoadBalancerByIdResponse) ToEntityLoadBalancer() *lsentity.LoadBalan
 
 func (s *ListLoadBalancersResponse) ToEntityListLoadBalancers() *lsentity.ListLoadBalancers {
 	if s == nil || s.ListData == nil || len(s.ListData) < 1 {
-		return nil
+		return &lsentity.ListLoadBalancers{
+			Page:      0,
+			PageSize:  0,
+			TotalPage: 0,
+			TotalItem: 0,
+			Items:     make([]*lsentity.LoadBalancer, 0),
+		}
 	}
 
 	result := &lsentity.ListLoadBalancers{