[test] : add unittest for service controller

cloud/linode/service_controller_test.go

@@ -0,0 +1,73 @@
+package linode
+
+import (
+	"testing"
+
+	"github.com/golang/mock/gomock"
+	"github.com/linode/linode-cloud-controller-manager/cloud/linode/client/mocks"
+	"github.com/stretchr/testify/assert"
+	"k8s.io/client-go/util/workqueue"
+)
+
+func Test_serviceController_processNextDeletion(t *testing.T) {
+	type fields struct {
+		loadbalancers *loadbalancers
+		queue         workqueue.TypedDelayingInterface[any]
+		Client        *mocks.MockClient
+	}
+	tests := []struct {
+		name     string
+		fields   fields
+		Setup    func(*fields)
+		want     bool
+		queueLen int
+	}{
+		{
+			name: "Invalid service type",
+			fields: fields{
+				loadbalancers: nil,
+			},
+			Setup: func(f *fields) {
+				f.loadbalancers = &loadbalancers{client: f.Client, zone: "test", loadBalancerType: Options.LoadBalancerType}
+				f.queue = workqueue.NewTypedDelayingQueueWithConfig(workqueue.TypedDelayingQueueConfig[any]{Name: "testQueue"})
+				f.queue.Add("test")
+			},
+			want:     true,
+			queueLen: 0,
+		},
+		{
+			name: "Valid service type",
+			fields: fields{
+				loadbalancers: nil,
+			},
+			Setup: func(f *fields) {
+				f.loadbalancers = &loadbalancers{client: f.Client, zone: "test", loadBalancerType: Options.LoadBalancerType}
+				f.queue = workqueue.NewTypedDelayingQueueWithConfig(workqueue.TypedDelayingQueueConfig[any]{Name: "testQueue"})
+				svc := createTestService()
+				f.queue.Add(svc)
+			},
+			want:     true,
+			queueLen: 0,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			s := &serviceController{
+				loadbalancers: tt.fields.loadbalancers,
+				queue:         tt.fields.queue,
+			}
+			ctrl := gomock.NewController(t)
+			defer ctrl.Finish()
+			client := mocks.NewMockClient(ctrl)
+			tt.fields.Client = client
+			tt.Setup(&tt.fields)
+			s.loadbalancers = tt.fields.loadbalancers
+			s.queue = tt.fields.queue
+			s.loadbalancers.client = tt.fields.Client
+			if got := s.processNextDeletion(); got != tt.want {
+				t.Errorf("serviceController.processNextDeletion() = %v, want %v", got, tt.want)
+			}
+			assert.Equal(t, tt.queueLen, tt.fields.queue.Len())
+		})
+	}
+}