// NewSimpleClientset returns a clientset that will respond with the provided objects.
// It's backed by a very simple object tracker that processes creates, updates and deletions as-is,
// without applying any validations and/or defaults. It shouldn't be considered a replacement
// for a real clientset and is mostly useful in simple unit tests.
func NewSimpleClientset(objects ...runtime.Object) *Clientset {
o := core.NewObjectTracker(api.Scheme, api.Codecs.UniversalDecoder())
for _, obj := range objects {
if err := o.Add(obj); err != nil {
panic(err)
}
}
fakePtr := core.Fake{}
fakePtr.AddReactor("*", "*", core.ObjectReaction(o, registered.RESTMapper()))
fakePtr.AddWatchReactor("*", core.DefaultWatchReactor(watch.NewFake(), nil))
return &Clientset{fakePtr}
}
func TestNewSourceApiserver_TwoNamespacesSameName(t *testing.T) {
pod1 := api.Pod{
ObjectMeta: api.ObjectMeta{Name: "p", Namespace: "one"},
Spec: api.PodSpec{Containers: []api.Container{{Image: "image/one"}}}}
pod2 := api.Pod{
ObjectMeta: api.ObjectMeta{Name: "p", Namespace: "two"},
Spec: api.PodSpec{Containers: []api.Container{{Image: "image/blah"}}}}
// Setup fake api client.
fakeWatch := watch.NewFake()
lw := fakePodLW{
listResp: &api.PodList{Items: []api.Pod{pod1, pod2}},
watchResp: fakeWatch,
}
ch := make(chan interface{})
newSourceApiserverFromLW(lw, ch)
got, ok := <-ch
if !ok {
t.Errorf("Unable to read from channel when expected")
}
update := got.(kubetypes.PodUpdate)
// Make sure that we get both pods. Catches bug #2294.
if !(len(update.Pods) == 2) {
t.Errorf("Expected %d, Got %d", 2, len(update.Pods))
}
// Delete pod1
fakeWatch.Delete(&pod1)
got, ok = <-ch
if !ok {
t.Errorf("Unable to read from channel when expected")
}
update = got.(kubetypes.PodUpdate)
if !(len(update.Pods) == 1) {
t.Errorf("Expected %d, Got %d", 1, len(update.Pods))
}
}
func TestNewSourceApiserverInitialEmptySendsEmptyPodUpdate(t *testing.T) {
// Setup fake api client.
fakeWatch := watch.NewFake()
lw := fakePodLW{
listResp: &api.PodList{Items: []api.Pod{}},
watchResp: fakeWatch,
}
ch := make(chan interface{})
newSourceApiserverFromLW(lw, ch)
got, ok := <-ch
if !ok {
t.Errorf("Unable to read from channel when expected")
}
update := got.(kubetypes.PodUpdate)
expected := CreatePodUpdate(kubetypes.SET, kubetypes.ApiserverSource)
if !api.Semantic.DeepEqual(expected, update) {
t.Errorf("Expected %#v; Got %#v", expected, update)
}
}
func TestReflectorForWatchCache(t *testing.T) {
store := newTestWatchCache(5)
{
_, version, err := store.WaitUntilFreshAndList(0)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if version != 0 {
t.Errorf("unexpected resource version: %d", version)
}
}
lw := &testLW{
WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
fw := watch.NewFake()
go fw.Stop()
return fw, nil
},
ListFunc: func(options api.ListOptions) (runtime.Object, error) {
return &api.PodList{ListMeta: unversioned.ListMeta{ResourceVersion: "10"}}, nil
},
}
r := cache.NewReflector(lw, &api.Pod{}, store, 0)
r.ListAndWatch(wait.NeverStop)
{
_, version, err := store.WaitUntilFreshAndList(10)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if version != 10 {
t.Errorf("unexpected resource version: %d", version)
}
}
}
func TestWatchHTTPTimeout(t *testing.T) {
watcher := watch.NewFake()
timeoutCh := make(chan time.Time)
done := make(chan struct{})
serializer, ok := api.Codecs.StreamingSerializerForMediaType("application/json", nil)
if !ok {
t.Fatal(serializer)
}
// Setup a new watchserver
watchServer := &WatchServer{
watching: watcher,
mediaType: "testcase/json",
framer: serializer.Framer,
encoder: newCodec,
embeddedEncoder: newCodec,
fixup: func(obj runtime.Object) {},
t: &fakeTimeoutFactory{timeoutCh, done},
}
s := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
watchServer.ServeHTTP(w, req)
}))
defer s.Close()
// Setup a client
dest, _ := url.Parse(s.URL)
dest.Path = "/" + prefix + "/" + newGroupVersion.Group + "/" + newGroupVersion.Version + "/simple"
dest.RawQuery = "watch=true"
req, _ := http.NewRequest("GET", dest.String(), nil)
client := http.Client{}
resp, err := client.Do(req)
watcher.Add(&apiservertesting.Simple{TypeMeta: unversioned.TypeMeta{APIVersion: newGroupVersion.String()}})
// Make sure we can actually watch an endpoint
decoder := json.NewDecoder(resp.Body)
var got watchJSON
err = decoder.Decode(&got)
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
// Timeout and check for leaks
close(timeoutCh)
select {
case <-done:
if !watcher.Stopped {
t.Errorf("Leaked watch on timeout")
}
case <-time.After(wait.ForeverTestTimeout):
t.Errorf("Failed to stop watcher after %s of timeout signal", wait.ForeverTestTimeout.String())
}
// Make sure we can't receive any more events through the timeout watch
err = decoder.Decode(&got)
if err != io.EOF {
t.Errorf("Unexpected non-error")
}
}
func TestNewSourceApiserver_UpdatesAndMultiplePods(t *testing.T) {
pod1v1 := &api.Pod{
ObjectMeta: api.ObjectMeta{Name: "p"},
Spec: api.PodSpec{Containers: []api.Container{{Image: "image/one"}}}}
pod1v2 := &api.Pod{
ObjectMeta: api.ObjectMeta{Name: "p"},
Spec: api.PodSpec{Containers: []api.Container{{Image: "image/two"}}}}
pod2 := &api.Pod{
ObjectMeta: api.ObjectMeta{Name: "q"},
Spec: api.PodSpec{Containers: []api.Container{{Image: "image/blah"}}}}
// Setup fake api client.
fakeWatch := watch.NewFake()
lw := fakePodLW{
listResp: &api.PodList{Items: []api.Pod{*pod1v1}},
watchResp: fakeWatch,
}
ch := make(chan interface{})
newSourceApiserverFromLW(lw, ch)
got, ok := <-ch
if !ok {
t.Errorf("Unable to read from channel when expected")
}
update := got.(kubetypes.PodUpdate)
expected := CreatePodUpdate(kubetypes.SET, kubetypes.ApiserverSource, pod1v1)
if !api.Semantic.DeepEqual(expected, update) {
t.Errorf("Expected %#v; Got %#v", expected, update)
}
// Add another pod
fakeWatch.Add(pod2)
got, ok = <-ch
if !ok {
t.Errorf("Unable to read from channel when expected")
}
update = got.(kubetypes.PodUpdate)
// Could be sorted either of these two ways:
expectedA := CreatePodUpdate(kubetypes.SET, kubetypes.ApiserverSource, pod1v1, pod2)
expectedB := CreatePodUpdate(kubetypes.SET, kubetypes.ApiserverSource, pod2, pod1v1)
if !api.Semantic.DeepEqual(expectedA, update) && !api.Semantic.DeepEqual(expectedB, update) {
t.Errorf("Expected %#v or %#v, Got %#v", expectedA, expectedB, update)
}
// Modify pod1
fakeWatch.Modify(pod1v2)
got, ok = <-ch
if !ok {
t.Errorf("Unable to read from channel when expected")
}
update = got.(kubetypes.PodUpdate)
expectedA = CreatePodUpdate(kubetypes.SET, kubetypes.ApiserverSource, pod1v2, pod2)
expectedB = CreatePodUpdate(kubetypes.SET, kubetypes.ApiserverSource, pod2, pod1v2)
if !api.Semantic.DeepEqual(expectedA, update) && !api.Semantic.DeepEqual(expectedB, update) {
t.Errorf("Expected %#v or %#v, Got %#v", expectedA, expectedB, update)
}
// Delete pod1
fakeWatch.Delete(pod1v2)
got, ok = <-ch
if !ok {
t.Errorf("Unable to read from channel when expected")
}
update = got.(kubetypes.PodUpdate)
expected = CreatePodUpdate(kubetypes.SET, kubetypes.ApiserverSource, pod2)
if !api.Semantic.DeepEqual(expected, update) {
t.Errorf("Expected %#v, Got %#v", expected, update)
}
// Delete pod2
fakeWatch.Delete(pod2)
got, ok = <-ch
if !ok {
t.Errorf("Unable to read from channel when expected")
}
update = got.(kubetypes.PodUpdate)
expected = CreatePodUpdate(kubetypes.SET, kubetypes.ApiserverSource)
if !api.Semantic.DeepEqual(expected, update) {
t.Errorf("Expected %#v, Got %#v", expected, update)
}
}