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test: add unit test for kubernetesservice
Signed-off-by: pengyu <[email protected]>
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122 changes: 122 additions & 0 deletions
122
pkg/guestagent/kubernetesservice/kubernetesservice_test.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| package kubernetesservice | ||
|
|
||
| import ( | ||
| "context" | ||
| "net" | ||
| "reflect" | ||
| "testing" | ||
|
|
||
| corev1 "k8s.io/api/core/v1" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/util/intstr" | ||
| "k8s.io/client-go/informers" | ||
| clientSet "k8s.io/client-go/kubernetes" | ||
| "k8s.io/client-go/kubernetes/fake" | ||
| "k8s.io/client-go/tools/cache" | ||
| ) | ||
|
|
||
| func newFakeKubeClient() (clientSet.Interface, informers.SharedInformerFactory) { | ||
| kubeClient := fake.NewSimpleClientset() | ||
| informerFactory := informers.NewSharedInformerFactory(kubeClient, 0) | ||
| return kubeClient, informerFactory | ||
| } | ||
|
|
||
| func TestGetPorts(t *testing.T) { | ||
| ctx, cancel := context.WithCancel(context.Background()) | ||
| defer cancel() | ||
| serviceCreatedCh := make(chan struct{}, 1) | ||
| kubeClient, informerFactory := newFakeKubeClient() | ||
| serviceInformer := informerFactory.Core().V1().Services().Informer() | ||
| serviceInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{ | ||
| AddFunc: func(obj interface{}) { serviceCreatedCh <- struct{}{} }, | ||
| }) | ||
| informerFactory.Start(ctx.Done()) | ||
| serviceWatcher := NewServiceWatcher() | ||
| serviceWatcher.setServiceInformer(serviceInformer) | ||
|
|
||
| type testCase struct { | ||
| name string | ||
| service corev1.Service | ||
| want []Entry | ||
| } | ||
| cases := []testCase{ | ||
| { | ||
| name: "nodePort serivce", | ||
| service: corev1.Service{ | ||
| ObjectMeta: metav1.ObjectMeta{Name: "nodeport"}, | ||
| Spec: corev1.ServiceSpec{ | ||
| Type: corev1.ServiceTypeNodePort, | ||
| Ports: []corev1.ServicePort{ | ||
| { | ||
| Name: "http", | ||
| Protocol: corev1.ProtocolTCP, | ||
| Port: 80, | ||
| TargetPort: intstr.FromInt(80), | ||
| NodePort: 8080, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| want: []Entry{{ | ||
| Protocol: TCP, | ||
| IP: net.ParseIP("0.0.0.0"), | ||
| Port: 8080, | ||
| }}, | ||
| }, | ||
| { | ||
| name: "loadBalancer service", | ||
| service: corev1.Service{ | ||
| ObjectMeta: metav1.ObjectMeta{Name: "loadbalancer"}, | ||
| Spec: corev1.ServiceSpec{ | ||
| Type: corev1.ServiceTypeLoadBalancer, | ||
| Ports: []corev1.ServicePort{ | ||
| { | ||
| Name: "http", | ||
| Protocol: corev1.ProtocolTCP, | ||
| Port: 8081, | ||
| TargetPort: intstr.FromInt(80), | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| want: []Entry{{ | ||
| Protocol: TCP, | ||
| IP: net.ParseIP("0.0.0.0"), | ||
| Port: 8081, | ||
| }}, | ||
| }, | ||
| { | ||
| name: "clusterIP service", | ||
| service: corev1.Service{ | ||
| ObjectMeta: metav1.ObjectMeta{Name: "clusterip"}, | ||
| Spec: corev1.ServiceSpec{ | ||
| Type: corev1.ServiceTypeClusterIP, | ||
| Ports: []corev1.ServicePort{ | ||
| { | ||
| Name: "http", | ||
| Protocol: corev1.ProtocolTCP, | ||
| Port: 80, | ||
| TargetPort: intstr.FromInt(80), | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| want: nil, | ||
| }, | ||
| } | ||
| for _, c := range cases { | ||
| t.Run(c.name, func(t *testing.T) { | ||
| _, err := kubeClient.CoreV1().Services("default").Create(ctx, &c.service, metav1.CreateOptions{}) | ||
| if err != nil { | ||
| t.Fatalf("failed to create service: %v", err) | ||
| } | ||
| <-serviceCreatedCh | ||
|
|
||
| got := serviceWatcher.GetPorts() | ||
| if !reflect.DeepEqual(got, c.want) { | ||
| t.Errorf("got %v, want %v", got, c.want) | ||
| } | ||
| kubeClient.CoreV1().Services("default").Delete(ctx, c.service.Name, metav1.DeleteOptions{}) | ||
| }) | ||
| } | ||
| } |