147 lines
4.0 KiB
Go
147 lines
4.0 KiB
Go
/*
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Copyright 2021 The cert-manager 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 admission_test
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import (
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"fmt"
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"testing"
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admissionv1 "k8s.io/api/admission/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/kubernetes/fake"
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"github.com/jetstack/cert-manager/pkg/webhook/admission"
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"github.com/jetstack/cert-manager/pkg/webhook/admission/initializer"
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)
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func TestPlugins_InitializesNamedOnly(t *testing.T) {
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scheme := runtime.NewScheme()
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p := admission.NewPlugins(scheme)
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testPlugin1 := &testPlugin{}
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p.Register("TestPlugin1", func() (admission.Interface, error) {
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return testPlugin1, nil
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})
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testPlugin2 := &testPlugin{
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initErr: fmt.Errorf("failed init"),
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}
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p.Register("TestPlugin2", func() (admission.Interface, error) {
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return testPlugin2, nil
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})
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// only initialize TestPlugin1
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_, err := p.NewFromPlugins([]string{"TestPlugin1"}, initializer.New(fake.NewSimpleClientset(), nil, nil, nil))
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if err != nil {
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t.Errorf("got unexpected error: %v", err)
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}
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if testPlugin1.kc == nil {
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t.Errorf("expected TestPlugin1 to be initialized")
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}
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if testPlugin2.kc != nil {
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t.Errorf("expected TestPlugin2 to not be initialized")
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}
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}
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func TestPlugins_FailsIfAnyPluginFails(t *testing.T) {
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scheme := runtime.NewScheme()
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p := admission.NewPlugins(scheme)
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testPlugin1 := &testPlugin{}
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p.Register("TestPlugin1", func() (admission.Interface, error) {
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return testPlugin1, nil
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})
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testPlugin2 := &testPlugin{
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initErr: fmt.Errorf("failed init"),
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}
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p.Register("TestPlugin2", func() (admission.Interface, error) {
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return testPlugin2, nil
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})
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// only initialize TestPlugin1
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_, err := p.NewFromPlugins([]string{"TestPlugin1", "TestPlugin2"}, initializer.New(fake.NewSimpleClientset(), nil, nil, nil))
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if err == nil {
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t.Errorf("expected an error but got none")
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}
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if testPlugin1.kc == nil {
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t.Errorf("expected TestPlugin1 to be initialized")
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}
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if testPlugin2.kc == nil {
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t.Errorf("expected TestPlugin2 to be initialized")
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}
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}
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func TestPlugins_FailsNonExistingPlugin(t *testing.T) {
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scheme := runtime.NewScheme()
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p := admission.NewPlugins(scheme)
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testPlugin1 := &testPlugin{}
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p.Register("TestPlugin1", func() (admission.Interface, error) {
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return testPlugin1, nil
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})
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// only initialize TestPlugin1
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_, err := p.NewFromPlugins([]string{"TestPlugin1", "TestPluginDoesNotExist"}, initializer.New(fake.NewSimpleClientset(), nil, nil, nil))
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if err == nil {
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t.Errorf("expected an error but got none")
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}
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if testPlugin1.kc == nil {
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t.Errorf("expected TestPlugin1 to be initialized")
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}
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}
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func TestPlugins_FailsIfPluginFailsToBuild(t *testing.T) {
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scheme := runtime.NewScheme()
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p := admission.NewPlugins(scheme)
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testPlugin1 := &testPlugin{}
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p.Register("TestPlugin1", func() (admission.Interface, error) {
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return testPlugin1, fmt.Errorf("an early error occurred")
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})
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// only initialize TestPlugin1
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_, err := p.NewFromPlugins([]string{"TestPlugin1"}, initializer.New(fake.NewSimpleClientset(), nil, nil, nil))
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if err == nil {
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t.Errorf("expected an error but got none")
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}
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if testPlugin1.kc != nil {
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t.Errorf("expected TestPlugin1 to not be initialized")
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}
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}
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type testPlugin struct {
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kc kubernetes.Interface
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initErr error
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}
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var _ admission.Interface = &testPlugin{}
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var _ initializer.WantsExternalKubeClientSet = &testPlugin{}
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func (t *testPlugin) Handles(_ admissionv1.Operation) bool {
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return true
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}
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func (t *testPlugin) SetExternalKubeClientSet(k kubernetes.Interface) {
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t.kc = k
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}
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func (t *testPlugin) ValidateInitialization() error {
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return t.initErr
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}
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