ContainerImage.Pinniped/internal/controller/apicerts/certs_manager_test.go

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/*
Copyright 2020 VMware, Inc.
SPDX-License-Identifier: Apache-2.0
*/
package apicerts
import (
"context"
"errors"
"testing"
"time"
"github.com/sclevine/spec"
"github.com/sclevine/spec/report"
"github.com/stretchr/testify/require"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
kubeinformers "k8s.io/client-go/informers"
kubernetesfake "k8s.io/client-go/kubernetes/fake"
coretesting "k8s.io/client-go/testing"
"github.com/suzerain-io/pinniped/internal/controllerlib"
2020-08-20 17:54:15 +00:00
"github.com/suzerain-io/pinniped/internal/testutil"
)
func TestManagerControllerOptions(t *testing.T) {
spec.Run(t, "options", func(t *testing.T, when spec.G, it spec.S) {
const installedInNamespace = "some-namespace"
var r *require.Assertions
var observableWithInformerOption *testutil.ObservableWithInformerOption
var observableWithInitialEventOption *testutil.ObservableWithInitialEventOption
var secretsInformerFilter controllerlib.Filter
it.Before(func() {
r = require.New(t)
observableWithInformerOption = testutil.NewObservableWithInformerOption()
observableWithInitialEventOption = testutil.NewObservableWithInitialEventOption()
secretsInformer := kubeinformers.NewSharedInformerFactory(nil, 0).Core().V1().Secrets()
_ = NewCertsManagerController(installedInNamespace, nil, secretsInformer, observableWithInformerOption.WithInformer, observableWithInitialEventOption.WithInitialEvent, 0, "Pinniped CA", "pinniped-api")
secretsInformerFilter = observableWithInformerOption.GetFilterForInformer(secretsInformer)
})
when("watching Secret objects", func() {
var subject controllerlib.Filter
var target, wrongNamespace, wrongName, unrelated *corev1.Secret
it.Before(func() {
subject = secretsInformerFilter
target = &corev1.Secret{ObjectMeta: metav1.ObjectMeta{Name: "api-serving-cert", Namespace: installedInNamespace}}
wrongNamespace = &corev1.Secret{ObjectMeta: metav1.ObjectMeta{Name: "api-serving-cert", Namespace: "wrong-namespace"}}
wrongName = &corev1.Secret{ObjectMeta: metav1.ObjectMeta{Name: "wrong-name", Namespace: installedInNamespace}}
unrelated = &corev1.Secret{ObjectMeta: metav1.ObjectMeta{Name: "wrong-name", Namespace: "wrong-namespace"}}
})
when("the target Secret changes", func() {
it("returns true to trigger the sync method", func() {
r.True(subject.Add(target))
r.True(subject.Update(target, unrelated))
r.True(subject.Update(unrelated, target))
r.True(subject.Delete(target))
})
})
when("a Secret from another namespace changes", func() {
it("returns false to avoid triggering the sync method", func() {
r.False(subject.Add(wrongNamespace))
r.False(subject.Update(wrongNamespace, unrelated))
r.False(subject.Update(unrelated, wrongNamespace))
r.False(subject.Delete(wrongNamespace))
})
})
when("a Secret with a different name changes", func() {
it("returns false to avoid triggering the sync method", func() {
r.False(subject.Add(wrongName))
r.False(subject.Update(wrongName, unrelated))
r.False(subject.Update(unrelated, wrongName))
r.False(subject.Delete(wrongName))
})
})
when("a Secret with a different name and a different namespace changes", func() {
it("returns false to avoid triggering the sync method", func() {
r.False(subject.Add(unrelated))
r.False(subject.Update(unrelated, unrelated))
r.False(subject.Delete(unrelated))
})
})
})
when("starting up", func() {
it("asks for an initial event because the Secret may not exist yet and it needs to run anyway", func() {
r.Equal(controllerlib.Key{
Namespace: installedInNamespace,
Name: "api-serving-cert",
}, observableWithInitialEventOption.GetInitialEventKey())
})
})
}, spec.Parallel(), spec.Report(report.Terminal{}))
}
func TestManagerControllerSync(t *testing.T) {
spec.Run(t, "Sync", func(t *testing.T, when spec.G, it spec.S) {
const installedInNamespace = "some-namespace"
const certDuration = 12345678 * time.Second
var r *require.Assertions
var subject controllerlib.Controller
var kubeAPIClient *kubernetesfake.Clientset
var kubeInformerClient *kubernetesfake.Clientset
var kubeInformers kubeinformers.SharedInformerFactory
var timeoutContext context.Context
var timeoutContextCancel context.CancelFunc
var syncContext *controllerlib.Context
// Defer starting the informers until the last possible moment so that the
// nested Before's can keep adding things to the informer caches.
var startInformersAndController = func() {
// Set this at the last second to allow for injection of server override.
subject = NewCertsManagerController(
installedInNamespace,
kubeAPIClient,
kubeInformers.Core().V1().Secrets(),
controllerlib.WithInformer,
controllerlib.WithInitialEvent,
certDuration,
"Pinniped CA",
"pinniped-api",
)
// Set this at the last second to support calling subject.Name().
syncContext = &controllerlib.Context{
Context: timeoutContext,
Name: subject.Name(),
Key: controllerlib.Key{
Namespace: installedInNamespace,
Name: "api-serving-cert",
},
}
// Must start informers before calling TestRunSynchronously()
kubeInformers.Start(timeoutContext.Done())
controllerlib.TestRunSynchronously(t, subject)
}
it.Before(func() {
r = require.New(t)
timeoutContext, timeoutContextCancel = context.WithTimeout(context.Background(), time.Second*3)
kubeInformerClient = kubernetesfake.NewSimpleClientset()
kubeInformers = kubeinformers.NewSharedInformerFactory(kubeInformerClient, 0)
kubeAPIClient = kubernetesfake.NewSimpleClientset()
})
it.After(func() {
timeoutContextCancel()
})
when("there is not yet an api-serving-cert Secret in the installation namespace or it was deleted", func() {
it.Before(func() {
unrelatedSecret := &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{
Name: "some other secret",
Namespace: installedInNamespace,
},
}
err := kubeInformerClient.Tracker().Add(unrelatedSecret)
r.NoError(err)
})
it("creates the api-serving-cert Secret", func() {
startInformersAndController()
err := controllerlib.TestSync(t, subject, *syncContext)
r.NoError(err)
// Check all the relevant fields from the create Secret action
r.Len(kubeAPIClient.Actions(), 1)
actualAction := kubeAPIClient.Actions()[0].(coretesting.CreateActionImpl)
r.Equal(schema.GroupVersionResource{Group: "", Version: "v1", Resource: "secrets"}, actualAction.GetResource())
r.Equal(installedInNamespace, actualAction.GetNamespace())
actualSecret := actualAction.GetObject().(*corev1.Secret)
r.Equal("api-serving-cert", actualSecret.Name)
r.Equal(installedInNamespace, actualSecret.Namespace)
actualCACert := actualSecret.StringData["caCertificate"]
actualPrivateKey := actualSecret.StringData["tlsPrivateKey"]
actualCertChain := actualSecret.StringData["tlsCertificateChain"]
r.NotEmpty(actualCACert)
r.NotEmpty(actualPrivateKey)
r.NotEmpty(actualCertChain)
// Validate the created CA's lifetime.
validCACert := testutil.ValidateCertificate(t, actualCACert, actualCACert)
validCACert.RequireLifetime(time.Now(), time.Now().Add(certDuration), 6*time.Minute)
// Validate the created cert using the CA, and also validate the cert's hostname
validCert := testutil.ValidateCertificate(t, actualCACert, actualCertChain)
validCert.RequireDNSName("pinniped-api." + installedInNamespace + ".svc")
validCert.RequireLifetime(time.Now(), time.Now().Add(certDuration), 6*time.Minute)
validCert.RequireMatchesPrivateKey(actualPrivateKey)
})
when("creating the Secret fails", func() {
it.Before(func() {
kubeAPIClient.PrependReactor(
"create",
"secrets",
func(_ coretesting.Action) (bool, runtime.Object, error) {
return true, nil, errors.New("create failed")
},
)
})
it("returns the create error", func() {
startInformersAndController()
err := controllerlib.TestSync(t, subject, *syncContext)
r.EqualError(err, "could not create secret: create failed")
})
})
})
when("there is an api-serving-cert Secret already in the installation namespace", func() {
it.Before(func() {
apiServingCertSecret := &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{
Name: "api-serving-cert",
Namespace: installedInNamespace,
},
}
err := kubeInformerClient.Tracker().Add(apiServingCertSecret)
r.NoError(err)
})
it("does not need to make any API calls with its API client", func() {
startInformersAndController()
err := controllerlib.TestSync(t, subject, *syncContext)
r.NoError(err)
r.Empty(kubeAPIClient.Actions())
})
})
}, spec.Parallel(), spec.Report(report.Terminal{}))
}