mirror of https://github.com/knative/pkg.git
149 lines
3.6 KiB
Go
149 lines
3.6 KiB
Go
/*
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Copyright 2019 The Knative 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 webhook
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import (
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"context"
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"fmt"
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"net"
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"net/http"
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"net/http/httptest"
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"testing"
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"time"
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"golang.org/x/sync/errgroup"
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"knative.dev/pkg/controller"
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// Make system.Namespace() work in tests.
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_ "knative.dev/pkg/system/testing"
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. "knative.dev/pkg/reconciler/testing"
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)
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func newDefaultOptions() Options {
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return Options{
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ServiceName: "webhook",
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Port: 8443,
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SecretName: "webhook-certs",
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}
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}
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const (
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testResourceName = "test-resource"
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user1 = "brutto@knative.dev"
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)
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func init() {
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// Don't hang forever when running tests.
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GracePeriod = 100 * time.Millisecond
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}
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func newNonRunningTestWebhook(t *testing.T, options Options, acs ...interface{}) (
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ctx context.Context, ac *Webhook, cancel context.CancelFunc) {
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t.Helper()
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// Create fake clients
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ctx, ctxCancel, informers := SetupFakeContextWithCancel(t)
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ctx = WithOptions(ctx, options)
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stopCb, err := controller.RunInformers(ctx.Done(), informers...)
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if err != nil {
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t.Fatalf("StartInformers() = %v", err)
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}
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cancel = func() {
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ctxCancel()
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stopCb()
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}
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ac, err = New(ctx, acs)
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if err != nil {
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t.Fatalf("Failed to create new admission controller: %v", err)
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}
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return
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}
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func TestRegistrationStopChanFire(t *testing.T) {
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opts := newDefaultOptions()
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_, ac, cancel := newNonRunningTestWebhook(t, opts)
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defer cancel()
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stopCh := make(chan struct{})
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var g errgroup.Group
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g.Go(func() error {
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return ac.Run(stopCh)
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})
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close(stopCh)
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if err := g.Wait(); err != nil {
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t.Fatal("Error during run: ", err)
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}
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conn, err := net.Dial("tcp", fmt.Sprintf(":%d", opts.Port))
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if err == nil {
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conn.Close()
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t.Errorf("Unexpected success to dial to port %d", opts.Port)
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}
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}
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func TestWebhookKubeletProbe(t *testing.T) {
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opts := newDefaultOptions()
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ctx, webhook, cancel := newNonRunningTestWebhook(t, opts)
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defer cancel()
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recorder := bombRecorder{ResponseRecorder: httptest.NewRecorder()}
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probeReq := httptest.NewRequest("GET", "/", nil)
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probeReq.Header.Set("User-Agent", "kube-probe/1.16")
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webhook.ServeHTTP(&recorder, probeReq)
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if got, want := recorder.Code, http.StatusOK; got != want {
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t.Fatalf("Probe got HTTP status %d - expected %d", got, want)
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}
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if got, want := recorder.writeCount, 1; got != want {
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t.Errorf("HTTP status was written %d times - expected only one write", got)
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}
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// Stop the webhook - which means probes should fail
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//
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// The steps below aren't obvious and requires you to
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// know the implementation details
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cancel()
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webhook.Run(ctx.Done())
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recorder = bombRecorder{ResponseRecorder: httptest.NewRecorder()}
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webhook.ServeHTTP(&recorder, probeReq)
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if got, want := recorder.Code, http.StatusInternalServerError; got != want {
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t.Fatalf("Probe got HTTP status %d - expected %d", got, want)
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}
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if got, want := recorder.writeCount, 1; got != want {
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t.Errorf("HTTP status was written %d times - expected only one write", got)
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}
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}
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type bombRecorder struct {
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*httptest.ResponseRecorder
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writeCount int
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}
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func (rw *bombRecorder) WriteHeader(code int) {
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rw.writeCount += 1
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rw.ResponseRecorder.WriteHeader(code)
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}
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