badOut := &example.Pod{}
			err = store.GuaranteedUpdate(ctx, badKey, badOut, true, nil, storage.SimpleUpdate(
				func(runtime.Object) (runtime.Object, error) {
					obj := basePod.DeepCopy()
					obj.Namespace = fmt.Sprintf("%s-bad", tt.namespace)
					return obj, nil
				}), nil)
			if err != nil {
				t.Fatalf("GuaranteedUpdate of bad pod failed: %v", err)
			}

			var prevObj *example.Pod

		return input, nil, nil
	}
	// GuaranteedUpdate without suggestion should return an error
	if err := store.GuaranteedUpdate(ctx, preset[1].key, &example.Pod{}, false, nil, updateFunc, nil); !storage.IsInternalError(err) {
		t.Errorf("Unexpected error: %v", err)
	}
	// GuaranteedUpdate with suggestion should return an error if we don't change the object

type MatchValue struct {
	IndexName string
	Value     string
}

// Pass an UpdateFunc to Interface.GuaranteedUpdate to make an update
// that is guaranteed to succeed.
// See the comment for GuaranteedUpdate for more details.
type UpdateFunc func(input runtime.Object, res ResponseMeta) (output runtime.Object, ttl *uint64, err error)

		if err != nil {
			recordDecodeError(s.groupResourceString, key)
			return err
		}
		return nil
	}
}

// GuaranteedUpdate implements storage.Interface.GuaranteedUpdate.
func (s *store) GuaranteedUpdate(
	ctx context.Context, key string, destination runtime.Object, ignoreNotFound bool,

	expectInvalidKey("Get", store.Get(ctx, invalidKey, storage.GetOptions{}, nil))
	expectInvalidKey("GetList", store.GetList(ctx, invalidKey, storage.ListOptions{}, nil))
	expectInvalidKey("GuaranteedUpdate", store.GuaranteedUpdate(ctx, invalidKey, nil, true, nil, nil, nil))
	_, countErr := store.Count(invalidKey)
	expectInvalidKey("Count", countErr)
}

func TestResolveGetListRev(t *testing.T) {
	_, store, _ := testSetup(t)

		return err
	}
	return nil
}

// applyPatch is called every time GuaranteedUpdate asks for the updated object,
// and is given the currently persisted object as input.
// TODO: rename this function because the name implies it is related to applyPatcher

			return err
		}
	}
	metrics.RecordListCacheMetrics(c.resourcePrefix, indexUsed, len(objs), listVal.Len())
	return nil
}

// GuaranteedUpdate implements storage.Interface.
func (c *Cacher) GuaranteedUpdate(
	ctx context.Context, key string, destination runtime.Object, ignoreNotFound bool,
	preconditions *storage.Preconditions, tryUpdate storage.UpdateFunc, _ runtime.Object) error {

	// Simulate GuaranteedUpdate behavior (retries internally on etcd changes if the incoming resource doesn't pin resourceVersion)
	for {
		currentPod := p.startingPod
		if p.numUpdates > 0 {
			currentPod = p.updatePod
		}
		p.numUpdates++

	cachedObj runtime.Object
}

// GuaranteedUpdate overwrites the method with one that always suggests the cachedObj.
func (s *staleGuaranteedUpdateStorage) GuaranteedUpdate(
	ctx context.Context, key string, destination runtime.Object, ignoreNotFound bool,
	preconditions *storage.Preconditions, tryUpdate storage.UpdateFunc, _ runtime.Object) error {

		storagePreconditions.ResourceVersion = preconditions.ResourceVersion
	}

	out := e.NewFunc()
	// deleteObj is only used in case a deletion is carried out
	var deleteObj runtime.Object
	err = e.Storage.GuaranteedUpdate(ctx, key, out, true, storagePreconditions, func(existing runtime.Object, res storage.ResponseMeta) (runtime.Object, *uint64, error) {
		existingResourceVersion, err := e.Storage.Versioner().ObjectResourceVersion(existing)