func TestWatch(t *testing.T) {
server, etcdStorage := etcdstorage.NewEtcdTestStorage(t, testapi.Default.Codec(), etcdtest.PathPrefix())
defer server.Terminate(t)
cacher := newTestCacher(etcdStorage)
podFoo := makeTestPod("foo")
podBar := makeTestPod("bar")
podFooPrime := makeTestPod("foo")
podFooPrime.Spec.NodeName = "fakeNode"
podFooBis := makeTestPod("foo")
podFooBis.Spec.NodeName = "anotherFakeNode"
// Set up Watch for object "podFoo".
watcher, err := cacher.Watch(context.TODO(), "pods/ns/foo", 1, storage.Everything)
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
fooCreated := updatePod(t, etcdStorage, podFoo, nil)
_ = updatePod(t, etcdStorage, podBar, nil)
fooUpdated := updatePod(t, etcdStorage, podFooPrime, fooCreated)
verifyWatchEvent(t, watcher, watch.Added, podFoo)
verifyWatchEvent(t, watcher, watch.Modified, podFooPrime)
// Check whether we get too-old error.
_, err = cacher.Watch(context.TODO(), "pods/ns/foo", 1, storage.Everything)
if err == nil {
t.Errorf("Expected 'error too old' error")
}
// Now test watch with initial state.
initialVersion, err := strconv.Atoi(fooCreated.ResourceVersion)
if err != nil {
t.Fatalf("Incorrect resourceVersion: %s", fooCreated.ResourceVersion)
}
initialWatcher, err := cacher.Watch(context.TODO(), "pods/ns/foo", uint64(initialVersion), storage.Everything)
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
verifyWatchEvent(t, initialWatcher, watch.Added, podFoo)
verifyWatchEvent(t, initialWatcher, watch.Modified, podFooPrime)
// Now test watch from "now".
nowWatcher, err := cacher.Watch(context.TODO(), "pods/ns/foo", 0, storage.Everything)
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
verifyWatchEvent(t, nowWatcher, watch.Added, podFooPrime)
_ = updatePod(t, etcdStorage, podFooBis, fooUpdated)
verifyWatchEvent(t, nowWatcher, watch.Modified, podFooBis)
}
func TestFiltering(t *testing.T) {
server, etcdStorage := etcdstorage.NewEtcdTestStorage(t, testapi.Default.Codec(), etcdtest.PathPrefix())
defer server.Terminate(t)
cacher := newTestCacher(etcdStorage)
podFoo := makeTestPod("foo")
podFoo.Labels = map[string]string{"filter": "foo"}
podFooFiltered := makeTestPod("foo")
podFooPrime := makeTestPod("foo")
podFooPrime.Labels = map[string]string{"filter": "foo"}
podFooPrime.Spec.NodeName = "fakeNode"
fooCreated := updatePod(t, etcdStorage, podFoo, nil)
fooFiltered := updatePod(t, etcdStorage, podFooFiltered, fooCreated)
fooUnfiltered := updatePod(t, etcdStorage, podFoo, fooFiltered)
_ = updatePod(t, etcdStorage, podFooPrime, fooUnfiltered)
deleted := api.Pod{}
if err := etcdStorage.Delete(context.TODO(), etcdtest.AddPrefix("pods/ns/foo"), &deleted); err != nil {
t.Errorf("Unexpected error: %v", err)
}
// Set up Watch for object "podFoo" with label filter set.
selector := labels.SelectorFromSet(labels.Set{"filter": "foo"})
filter := func(obj runtime.Object) bool {
metadata, err := meta.Accessor(obj)
if err != nil {
t.Errorf("Unexpected error: %v", err)
return false
}
return selector.Matches(labels.Set(metadata.Labels()))
}
initialVersion, err := strconv.Atoi(fooCreated.ResourceVersion)
if err != nil {
t.Fatalf("Incorrect resourceVersion: %s", fooCreated.ResourceVersion)
}
watcher, err := cacher.Watch(context.TODO(), "pods/ns/foo", uint64(initialVersion), filter)
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
verifyWatchEvent(t, watcher, watch.Added, podFoo)
verifyWatchEvent(t, watcher, watch.Deleted, podFooFiltered)
verifyWatchEvent(t, watcher, watch.Added, podFoo)
verifyWatchEvent(t, watcher, watch.Modified, podFooPrime)
verifyWatchEvent(t, watcher, watch.Deleted, podFooPrime)
}
func TestList(t *testing.T) {
server, etcdStorage := etcdstorage.NewEtcdTestStorage(t, testapi.Default.Codec(), etcdtest.PathPrefix())
defer server.Terminate(t)
cacher := newTestCacher(etcdStorage)
podFoo := makeTestPod("foo")
podBar := makeTestPod("bar")
podBaz := makeTestPod("baz")
podFooPrime := makeTestPod("foo")
podFooPrime.Spec.NodeName = "fakeNode"
fooCreated := updatePod(t, etcdStorage, podFoo, nil)
_ = updatePod(t, etcdStorage, podBar, nil)
_ = updatePod(t, etcdStorage, podBaz, nil)
_ = updatePod(t, etcdStorage, podFooPrime, fooCreated)
deleted := api.Pod{}
if err := etcdStorage.Delete(context.TODO(), etcdtest.AddPrefix("pods/ns/bar"), &deleted); err != nil {
t.Errorf("Unexpected error: %v", err)
}
result := &api.PodList{}
// TODO: We need to pass ResourceVersion of barPod deletion operation.
// However, there is no easy way to get it, so it is hardcoded to 8.
if err := cacher.List(context.TODO(), "pods/ns", 8, storage.Everything, result); err != nil {
t.Errorf("Unexpected error: %v", err)
}
if result.ListMeta.ResourceVersion != "8" {
t.Errorf("Incorrect resource version: %v", result.ListMeta.ResourceVersion)
}
if len(result.Items) != 2 {
t.Errorf("Unexpected list result: %d", len(result.Items))
}
keys := sets.String{}
for _, item := range result.Items {
keys.Insert(item.Name)
}
if !keys.HasAll("foo", "baz") {
t.Errorf("Unexpected list result: %#v", result)
}
for _, item := range result.Items {
// unset fields that are set by the infrastructure
item.ResourceVersion = ""
item.CreationTimestamp = unversioned.Time{}
var expected *api.Pod
switch item.Name {
case "foo":
expected = podFooPrime
case "baz":
expected = podBaz
default:
t.Errorf("Unexpected item: %v", item)
}
if e, a := *expected, item; !reflect.DeepEqual(e, a) {
t.Errorf("Expected: %#v, got: %#v", e, a)
}
}
}