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client-go/tools/cache/reflector_data_consistency_detector: refactor unit tests

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Kubernetes-commit: 18837d60ae12ac70380ce5cf21cfd8e0d221263a
This commit is contained in:
Lukasz Szaszkiewicz 2024-05-27 11:10:00 +02:00 committed by Kubernetes Publisher
parent 0123e78ef6
commit 00036b79c4
1 changed files with 32 additions and 26 deletions
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58
tools/cache/reflector_data_consistency_detector_test.go vendored
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@ -26,8 +26,6 @@ import (
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/apimachinery/pkg/watch"
"k8s.io/utils/ptr"
)
@ -35,8 +33,8 @@ func TestDataConsistencyChecker(t *testing.T) {
scenarios := []struct {
name string
podList *v1.PodList
storeContent []*v1.Pod
listResponse *v1.PodList
retrievedItems []*v1.Pod
requestOptions metav1.ListOptions
expectedRequestOptions []metav1.ListOptions
@ -45,12 +43,12 @@ func TestDataConsistencyChecker(t *testing.T) {
}{
{
name: "data consistency check won't panic when data is consistent",
podList: &v1.PodList{
listResponse: &v1.PodList{
ListMeta: metav1.ListMeta{ResourceVersion: "2"},
Items: []v1.Pod{*makePod("p1", "1"), *makePod("p2", "2")},
},
requestOptions: metav1.ListOptions{TimeoutSeconds: ptr.To(int64(39))},
storeContent: []*v1.Pod{makePod("p1", "1"), makePod("p2", "2")},
retrievedItems: []*v1.Pod{makePod("p1", "1"), makePod("p2", "2")},
expectedListRequests: 1,
expectedRequestOptions: []metav1.ListOptions{
{
@ -63,7 +61,7 @@ func TestDataConsistencyChecker(t *testing.T) {
{
name: "data consistency check won't panic when there is no data",
podList: &v1.PodList{
listResponse: &v1.PodList{
ListMeta: metav1.ListMeta{ResourceVersion: "2"},
},
requestOptions: metav1.ListOptions{TimeoutSeconds: ptr.To(int64(39))},
@ -79,12 +77,12 @@ func TestDataConsistencyChecker(t *testing.T) {
{
name: "data consistency panics when data is inconsistent",
podList: &v1.PodList{
listResponse: &v1.PodList{
ListMeta: metav1.ListMeta{ResourceVersion: "2"},
Items: []v1.Pod{*makePod("p1", "1"), *makePod("p2", "2"), *makePod("p3", "3")},
},
requestOptions: metav1.ListOptions{TimeoutSeconds: ptr.To(int64(39))},
storeContent: []*v1.Pod{makePod("p1", "1"), makePod("p2", "2")},
retrievedItems: []*v1.Pod{makePod("p1", "1"), makePod("p2", "2")},
expectedListRequests: 1,
expectedRequestOptions: []metav1.ListOptions{
{
@ -99,23 +97,22 @@ func TestDataConsistencyChecker(t *testing.T) {
for _, scenario := range scenarios {
t.Run(scenario.name, func(t *testing.T) {
listWatcher, store, _, stopCh := testData()
ctx := wait.ContextForChannel(stopCh)
for _, obj := range scenario.storeContent {
require.NoError(t, store.Add(obj))
ctx := context.TODO()
fakeLister := &listWrapper{response: scenario.listResponse}
retrievedItemsFunc := func() []*v1.Pod {
return scenario.retrievedItems
}
listWatcher.customListResponse = scenario.podList
if scenario.expectPanic {
require.Panics(t, func() {
checkDataConsistency(ctx, "", scenario.podList.ResourceVersion, wrapListFuncWithContext(listWatcher.List), scenario.requestOptions, store.List)
checkDataConsistency(ctx, "", scenario.listResponse.ResourceVersion, fakeLister.List, scenario.requestOptions, retrievedItemsFunc)
})
} else {
checkDataConsistency(ctx, "", scenario.podList.ResourceVersion, wrapListFuncWithContext(listWatcher.List), scenario.requestOptions, store.List)
checkDataConsistency(ctx, "", scenario.listResponse.ResourceVersion, fakeLister.List, scenario.requestOptions, retrievedItemsFunc)
}
verifyListCounter(t, listWatcher, scenario.expectedListRequests)
verifyRequestOptions(t, listWatcher, scenario.expectedRequestOptions)
require.Equal(t, fakeLister.counter, scenario.expectedListRequests)
require.Equal(t, fakeLister.requestOptions, scenario.expectedRequestOptions)
})
}
}
@ -126,14 +123,15 @@ func TestDriveWatchLisConsistencyIfRequired(t *testing.T) {
}
func TestDataConsistencyCheckerRetry(t *testing.T) {
store := NewStore(MetaNamespaceKeyFunc)
ctx := context.TODO()
retrievedItemsFunc := func() []*v1.Pod {
return nil
}
stopListErrorAfter := 5
errLister := &errorLister{stopErrorAfter: stopListErrorAfter}
fakeErrLister := &errorLister{stopErrorAfter: stopListErrorAfter}
checkDataConsistency(ctx, "", "", wrapListFuncWithContext(errLister.List), metav1.ListOptions{}, store.List)
require.Equal(t, errLister.listCounter, errLister.stopErrorAfter)
checkDataConsistency(ctx, "", "", fakeErrLister.List, metav1.ListOptions{}, retrievedItemsFunc)
require.Equal(t, fakeErrLister.listCounter, fakeErrLister.stopErrorAfter)
}
type errorLister struct {
@ -141,7 +139,7 @@ type errorLister struct {
stopErrorAfter int
}
func (lw *errorLister) List(_ metav1.ListOptions) (runtime.Object, error) {
func (lw *errorLister) List(_ context.Context, _ metav1.ListOptions) (runtime.Object, error) {
lw.listCounter++
if lw.listCounter == lw.stopErrorAfter {
return &v1.PodList{}, nil
@ -149,6 +147,14 @@ func (lw *errorLister) List(_ metav1.ListOptions) (runtime.Object, error) {
return nil, fmt.Errorf("nasty error")
}
func (lw *errorLister) Watch(_ metav1.ListOptions) (watch.Interface, error) {
panic("not implemented")
type listWrapper struct {
counter int
requestOptions []metav1.ListOptions
response *v1.PodList
}
func (lw *listWrapper) List(_ context.Context, opts metav1.ListOptions) (*v1.PodList, error) {
lw.counter++
lw.requestOptions = append(lw.requestOptions, opts)
return lw.response, nil
}