270 lines
7.9 KiB
Go
270 lines
7.9 KiB
Go
/*
|
|
Copyright 2020 The Kubernetes Authors.
|
|
|
|
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 helper
|
|
|
|
import (
|
|
"fmt"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/google/go-cmp/cmp"
|
|
appsv1 "k8s.io/api/apps/v1"
|
|
v1 "k8s.io/api/core/v1"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/labels"
|
|
"k8s.io/client-go/informers"
|
|
"k8s.io/client-go/kubernetes/fake"
|
|
st "k8s.io/kubernetes/pkg/scheduler/testing"
|
|
)
|
|
|
|
func TestGetPodServices(t *testing.T) {
|
|
fakeInformerFactory := informers.NewSharedInformerFactory(&fake.Clientset{}, 0*time.Second)
|
|
var services []*v1.Service
|
|
for i := 0; i < 3; i++ {
|
|
service := &v1.Service{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: fmt.Sprintf("service-%d", i),
|
|
Namespace: "test",
|
|
},
|
|
Spec: v1.ServiceSpec{
|
|
Selector: map[string]string{
|
|
"app": fmt.Sprintf("test-%d", i),
|
|
},
|
|
},
|
|
}
|
|
services = append(services, service)
|
|
fakeInformerFactory.Core().V1().Services().Informer().GetStore().Add(service)
|
|
}
|
|
var pods []*v1.Pod
|
|
for i := 0; i < 5; i++ {
|
|
pod := st.MakePod().Name(fmt.Sprintf("test-pod-%d", i)).
|
|
Namespace("test").
|
|
Label("app", fmt.Sprintf("test-%d", i)).
|
|
Label("label", fmt.Sprintf("label-%d", i)).
|
|
Obj()
|
|
pods = append(pods, pod)
|
|
}
|
|
|
|
tests := []struct {
|
|
name string
|
|
pod *v1.Pod
|
|
expect []*v1.Service
|
|
}{
|
|
{
|
|
name: "GetPodServices for pod-0",
|
|
pod: pods[0],
|
|
expect: []*v1.Service{services[0]},
|
|
},
|
|
{
|
|
name: "GetPodServices for pod-1",
|
|
pod: pods[1],
|
|
expect: []*v1.Service{services[1]},
|
|
},
|
|
{
|
|
name: "GetPodServices for pod-2",
|
|
pod: pods[2],
|
|
expect: []*v1.Service{services[2]},
|
|
},
|
|
{
|
|
name: "GetPodServices for pod-3",
|
|
pod: pods[3],
|
|
expect: nil,
|
|
},
|
|
{
|
|
name: "GetPodServices for pod-4",
|
|
pod: pods[4],
|
|
expect: nil,
|
|
},
|
|
}
|
|
for _, test := range tests {
|
|
t.Run(test.name, func(t *testing.T) {
|
|
get, err := GetPodServices(fakeInformerFactory.Core().V1().Services().Lister(), test.pod)
|
|
if err != nil {
|
|
t.Errorf("Error from GetPodServices: %v", err)
|
|
} else if diff := cmp.Diff(test.expect, get); diff != "" {
|
|
t.Errorf("Unexpected services (-want, +got):\n%s", diff)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestDefaultSelector(t *testing.T) {
|
|
const (
|
|
namespace = "test"
|
|
podName = "test-pod"
|
|
serviceName = "test-service"
|
|
replicaSetName = "test-replicaset"
|
|
replicationControllerName = "test-replicationcontroller"
|
|
statefulSetName = "test-statefulset"
|
|
|
|
podLabelKey = "podLabelKey"
|
|
podLabelVal = "podLabelVal"
|
|
|
|
replicaSetLabelKey = "replicaSetLabelKey"
|
|
replicaSetLabelVal = "replicaSetLabelVal"
|
|
|
|
replicationLabelKey = "replicationLabelKey"
|
|
replicationLabelVal = "replicationLabelVal"
|
|
|
|
statefulSetLabelKey = "statefulSetLabelKey"
|
|
statefulSetLabelVal = "statefulSetLabelVal"
|
|
)
|
|
|
|
fakeInformerFactory := informers.NewSharedInformerFactory(&fake.Clientset{}, 0*time.Second)
|
|
|
|
// Create fake service
|
|
addFakeService := func() error {
|
|
// Create fake service
|
|
service := &v1.Service{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: serviceName,
|
|
Namespace: namespace,
|
|
},
|
|
Spec: v1.ServiceSpec{
|
|
Selector: map[string]string{
|
|
podLabelKey: podLabelVal,
|
|
},
|
|
},
|
|
}
|
|
return fakeInformerFactory.Core().V1().Services().Informer().GetStore().Add(service)
|
|
}
|
|
|
|
// Create fake ReplicaSet
|
|
addFakeReplicaSet := func() error {
|
|
replicaSet := &appsv1.ReplicaSet{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: replicaSetName,
|
|
Namespace: namespace,
|
|
},
|
|
Spec: appsv1.ReplicaSetSpec{
|
|
Selector: &metav1.LabelSelector{
|
|
MatchLabels: map[string]string{
|
|
replicaSetLabelKey: replicaSetLabelVal,
|
|
},
|
|
},
|
|
},
|
|
}
|
|
return fakeInformerFactory.Apps().V1().ReplicaSets().Informer().GetStore().Add(replicaSet)
|
|
}
|
|
|
|
// Create fake ReplicationController
|
|
addFakeReplicationController := func() error {
|
|
replicationController := &v1.ReplicationController{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: replicationControllerName,
|
|
Namespace: namespace,
|
|
},
|
|
Spec: v1.ReplicationControllerSpec{
|
|
Selector: map[string]string{
|
|
replicationLabelKey: replicationLabelVal,
|
|
},
|
|
},
|
|
}
|
|
return fakeInformerFactory.Core().V1().ReplicationControllers().Informer().GetStore().Add(replicationController)
|
|
}
|
|
|
|
// Create fake StatefulSet
|
|
addFakeStatefulSet := func() error {
|
|
statefulSet := &appsv1.StatefulSet{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: statefulSetName,
|
|
Namespace: namespace,
|
|
},
|
|
Spec: appsv1.StatefulSetSpec{
|
|
Selector: &metav1.LabelSelector{
|
|
MatchLabels: map[string]string{
|
|
statefulSetLabelKey: statefulSetLabelVal,
|
|
},
|
|
},
|
|
},
|
|
}
|
|
return fakeInformerFactory.Apps().V1().StatefulSets().Informer().GetStore().Add(statefulSet)
|
|
}
|
|
|
|
tests := []struct {
|
|
name string
|
|
pod *v1.Pod
|
|
expect labels.Set
|
|
addFakeResourceList []func() error
|
|
}{
|
|
{
|
|
name: "DefaultSelector for default case",
|
|
pod: st.MakePod().Name(podName).
|
|
Namespace(namespace).Label(podLabelKey, podLabelVal).
|
|
Obj(),
|
|
expect: labels.Set{},
|
|
addFakeResourceList: nil,
|
|
},
|
|
{
|
|
name: "DefaultSelector for no OwnerReference pod case",
|
|
pod: st.MakePod().Name(podName).
|
|
Namespace(namespace).Label(podLabelKey, podLabelVal).
|
|
Obj(),
|
|
expect: labels.Set{podLabelKey: podLabelVal},
|
|
addFakeResourceList: []func() error{addFakeService},
|
|
},
|
|
{
|
|
name: "DefaultSelector for ReplicaSet OwnerReference pod case",
|
|
pod: st.MakePod().Name(podName).
|
|
Namespace(namespace).Label(podLabelKey, podLabelVal).
|
|
OwnerReference(replicaSetName, appsv1.SchemeGroupVersion.WithKind("ReplicaSet")).Obj(),
|
|
expect: labels.Set{podLabelKey: podLabelVal, replicaSetLabelKey: replicaSetLabelVal},
|
|
addFakeResourceList: []func() error{addFakeService, addFakeReplicaSet},
|
|
},
|
|
{
|
|
name: "DefaultSelector for ReplicationController OwnerReference pod case",
|
|
pod: st.MakePod().Name(podName).
|
|
Namespace(namespace).Label(podLabelKey, podLabelVal).
|
|
OwnerReference(replicationControllerName, v1.SchemeGroupVersion.WithKind("ReplicationController")).Obj(),
|
|
expect: labels.Set{podLabelKey: podLabelVal, replicationLabelKey: replicationLabelVal},
|
|
addFakeResourceList: []func() error{addFakeService, addFakeReplicationController},
|
|
},
|
|
{
|
|
name: "DefaultSelector for StatefulSet OwnerReference pod case",
|
|
pod: st.MakePod().Name(podName).
|
|
Namespace(namespace).Label(podLabelKey, podLabelVal).
|
|
OwnerReference(statefulSetName, appsv1.SchemeGroupVersion.WithKind("StatefulSet")).Obj(),
|
|
expect: labels.Set{podLabelKey: podLabelVal, statefulSetLabelKey: statefulSetLabelVal},
|
|
addFakeResourceList: []func() error{addFakeService, addFakeStatefulSet},
|
|
},
|
|
}
|
|
for _, test := range tests {
|
|
t.Run(test.name, func(t *testing.T) {
|
|
// Add fake resources if needed.
|
|
if test.addFakeResourceList != nil {
|
|
for _, addFakeResource := range test.addFakeResourceList {
|
|
err := addFakeResource()
|
|
if err != nil {
|
|
t.Fatalf("failed to add fake resource: %v", err)
|
|
}
|
|
}
|
|
}
|
|
|
|
get := DefaultSelector(test.pod,
|
|
fakeInformerFactory.Core().V1().Services().Lister(),
|
|
fakeInformerFactory.Core().V1().ReplicationControllers().Lister(),
|
|
fakeInformerFactory.Apps().V1().ReplicaSets().Lister(),
|
|
fakeInformerFactory.Apps().V1().StatefulSets().Lister())
|
|
diff := cmp.Diff(test.expect.String(), get.String())
|
|
if diff != "" {
|
|
t.Errorf("Unexpected services (-want, +got):\n%s", diff)
|
|
}
|
|
|
|
})
|
|
}
|
|
}
|