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121 lines
3.0 KiB
Go
121 lines
3.0 KiB
Go
/*
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Copyright 2020 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package denyserviceexternalips
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import (
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"context"
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"testing"
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corev1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apiserver/pkg/admission"
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"k8s.io/kubernetes/pkg/apis/core"
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)
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func makeSvc(externalIPs ...string) *core.Service {
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svc := &core.Service{}
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svc.Namespace = "test-ns"
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svc.Name = "test-svc"
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svc.Spec.ExternalIPs = externalIPs
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return svc
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}
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func TestAdmission(t *testing.T) {
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testCases := []struct {
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name string
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newSvc *core.Service
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oldSvc *core.Service
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fail bool
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}{{
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name: "create: without externalIPs",
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newSvc: makeSvc(),
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}, {
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name: "create: with externalIPs",
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newSvc: makeSvc("1.1.1.1"),
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fail: true,
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}, {
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name: "update: same externalIPs",
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newSvc: makeSvc("1.1.1.1", "2.2.2.2"),
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oldSvc: makeSvc("1.1.1.1", "2.2.2.2"),
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}, {
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name: "update: reorder externalIPs",
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newSvc: makeSvc("1.1.1.1", "2.2.2.2"),
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oldSvc: makeSvc("2.2.2.2", "1.1.1.1"),
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}, {
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name: "update: change externalIPs",
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newSvc: makeSvc("1.1.1.1", "2.2.2.2"),
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oldSvc: makeSvc("1.1.1.1", "3.3.3.3"),
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fail: true,
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}, {
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name: "update: add externalIPs",
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newSvc: makeSvc("1.1.1.1", "2.2.2.2"),
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oldSvc: makeSvc("1.1.1.1"),
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fail: true,
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}, {
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name: "update: erase externalIPs",
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newSvc: makeSvc(),
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oldSvc: makeSvc("1.1.1.1", "2.2.2.2"),
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}, {
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name: "update: reduce externalIPs from back",
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newSvc: makeSvc("1.1.1.1"),
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oldSvc: makeSvc("1.1.1.1", "2.2.2.2"),
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}, {
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name: "update: reduce externalIPs from front",
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newSvc: makeSvc("2.2.2.2"),
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oldSvc: makeSvc("1.1.1.1", "2.2.2.2"),
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}}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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ctrl := newPlugin()
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var op admission.Operation
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var opt runtime.Object
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if tc.oldSvc == nil {
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op = admission.Create
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opt = &metav1.CreateOptions{}
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} else {
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op = admission.Update
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opt = &metav1.UpdateOptions{}
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}
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attrs := admission.NewAttributesRecord(
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tc.newSvc, // new object
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tc.oldSvc, // old object
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core.Kind("Service").WithVersion("version"),
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tc.newSvc.Namespace,
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tc.newSvc.Name,
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corev1.Resource("services").WithVersion("version"),
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"", // subresource
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op,
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opt,
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false, // dryRun
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nil, // userInfo
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)
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err := ctrl.Validate(context.TODO(), attrs, nil)
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if err != nil && !tc.fail {
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t.Errorf("Unexpected failure: %v", err)
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}
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if err == nil && tc.fail {
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t.Errorf("Unexpected success")
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}
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})
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}
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}
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