"k8s.io/kubernetes/pkg/apis/scheduling"
)

// SystemPriorityClasses define system priority classes that are auto-created at cluster bootstrapping.
// Our API validation logic ensures that any priority class that has a system prefix or its value
// is higher than HighestUserDefinablePriority is equal to one of these SystemPriorityClasses.
var systemPriorityClasses = []*v1.PriorityClass{
	{
		ObjectMeta: metav1.ObjectMeta{

func (r *REST) Delete(ctx context.Context, name string, deleteValidation rest.ValidateObjectFunc, options *metav1.DeleteOptions) (runtime.Object, bool, error) {
	for _, spc := range schedulingapiv1.SystemPriorityClasses() {
		if name == spc.Name {
			return nil, false, apierrors.NewForbidden(scheduling.Resource("priorityclasses"), spc.Name, errors.New("this is a system priority class and cannot be deleted"))
		}
	}

)

func TestIsKnownSystemPriorityClass(t *testing.T) {
	tests := []struct {
		name     string
		pc       *v1.PriorityClass
		expected bool
	}{
		{
			name:     "system priority class",
			pc:       SystemPriorityClasses()[0],
			expected: true,
		},
		{
			name: "non-system priority class",
			pc: &v1.PriorityClass{
				ObjectMeta: metav1.ObjectMeta{
					Name: scheduling.SystemNodeCritical,
				},

			if err != nil {
				utilruntime.HandleError(fmt.Errorf("unable to initialize client: %v", err))
				return false, nil
			}

			for _, pc := range schedulingapiv1.SystemPriorityClasses() {
				_, err := schedClientSet.PriorityClasses().Get(context.TODO(), pc.Name, metav1.GetOptions{})
				if err != nil {
					if apierrors.IsNotFound(err) {

	storage, server := newStorage(t)
	defer server.Terminate(t)
	defer storage.Store.DestroyFunc()
	key := "test/system-node-critical"
	ctx := genericapirequest.NewContext()
	pc := schedulingapiv1.SystemPriorityClasses()[0]
	internalPc := &scheduling.PriorityClass{}
	if err := schedulingapiv1.Convert_v1_PriorityClass_To_scheduling_PriorityClass(pc, internalPc, nil); err != nil {
		t.Fatal(err)
	}

	"k8s.io/kubernetes/pkg/apis/core"
	"k8s.io/kubernetes/pkg/apis/scheduling"
	schedulingapiv1 "k8s.io/kubernetes/pkg/apis/scheduling/v1"
)

func TestValidatePriorityClass(t *testing.T) {
	spcs := schedulingapiv1.SystemPriorityClasses()
	successCases := map[string]scheduling.PriorityClass{
		"no description": {
			ObjectMeta: metav1.ObjectMeta{Name: "tier1", Namespace: ""},
			Value:      100,
		},
		"with description": {