Reuse generic ListNonRecurisve test for cacher

staging/src/k8s.io/apiserver/pkg/storage/testing/store_tests.go

@@ -129,14 +129,15 @@ func RunTestGet(ctx context.Context, t *testing.T, store storage.Interface) {
 		ignoreNotFound       bool
 		expectNotFoundErr    bool
 		expectRVTooLarge     bool
-		expectedOut       []*example.Pod
+		expectedOut          *example.Pod
+		expectedAlternatives []*example.Pod
 		rv                   string
 	}{{
 		name:              "get existing",
 		key:               key,
 		ignoreNotFound:    false,
 		expectNotFoundErr: false,
-		expectedOut:       []*example.Pod{storedObj},
+		expectedOut:       storedObj,
 	}, {
 		// For RV=0 arbitrarily old version is allowed, including from the moment
 		// when the object didn't yet exist.
@@ -145,24 +146,24 @@ func RunTestGet(ctx context.Context, t *testing.T, store storage.Interface) {
 		name:                 "resource version 0",
 		key:                  key,
 		ignoreNotFound:       true,
-		expectedOut:    []*example.Pod{{}, createdObj, storedObj},
+		expectedAlternatives: []*example.Pod{{}, createdObj, storedObj},
 		rv:                   "0",
 	}, {
 		// Given that Get with set ResourceVersion is effectively always
 		// NotOlderThan semantic, both versions of object are allowed.
 		name:                 "object created resource version",
 		key:                  key,
-		expectedOut: []*example.Pod{createdObj, storedObj},
+		expectedAlternatives: []*example.Pod{createdObj, storedObj},
 		rv:                   createdObj.ResourceVersion,
 	}, {
 		name:        "current object resource version, match=NotOlderThan",
 		key:         key,
-		expectedOut: []*example.Pod{storedObj},
+		expectedOut: storedObj,
 		rv:          fmt.Sprintf("%d", currentRV),
 	}, {
 		name:        "latest resource version",
 		key:         key,
-		expectedOut: []*example.Pod{storedObj},
+		expectedOut: storedObj,
 		rv:          fmt.Sprintf("%d", lastUpdatedCurrentRV),
 	}, {
 		name:             "too high resource version",
@@ -179,7 +180,7 @@ func RunTestGet(ctx context.Context, t *testing.T, store storage.Interface) {
 		key:               "/non-existing",
 		ignoreNotFound:    true,
 		expectNotFoundErr: false,
-		expectedOut:       []*example.Pod{{}},
+		expectedOut:       &example.Pod{},
 	}}
 
 	for _, tt := range tests {
@@ -202,8 +203,8 @@ func RunTestGet(ctx context.Context, t *testing.T, store storage.Interface) {
 				t.Fatalf("Get failed: %v", err)
 			}
 
-			if len(tt.expectedOut) == 1 {
-				ExpectNoDiff(t, fmt.Sprintf("%s: incorrect pod", tt.name), tt.expectedOut[0], out)
+			if tt.expectedAlternatives == nil {
+				ExpectNoDiff(t, fmt.Sprintf("%s: incorrect pod", tt.name), tt.expectedOut, out)
 			} else {
 				toInterfaceSlice := func(pods []*example.Pod) []interface{} {
 					result := make([]interface{}, 0, len(pods))
@@ -212,7 +213,7 @@ func RunTestGet(ctx context.Context, t *testing.T, store storage.Interface) {
 					}
 					return result
 				}
-				ExpectContains(t, fmt.Sprintf("%s: incorrect pod", tt.name), toInterfaceSlice(tt.expectedOut), out)
+				ExpectContains(t, fmt.Sprintf("%s: incorrect pod", tt.name), toInterfaceSlice(tt.expectedAlternatives), out)
 			}
 		})
 	}
@@ -1048,17 +1049,26 @@ func seedMultiLevelData(ctx context.Context, store storage.Interface) (string, [
 }
 
 func RunTestGetListNonRecursive(ctx context.Context, t *testing.T, store storage.Interface) {
-	prevKey, prevStoredObj := testPropagateStore(ctx, t, store, &example.Pod{ObjectMeta: metav1.ObjectMeta{Name: "prev"}})
-
+	key, prevStoredObj := testPropagateStore(ctx, t, store, &example.Pod{ObjectMeta: metav1.ObjectMeta{Name: "foo"}})
 	prevRV, _ := strconv.Atoi(prevStoredObj.ResourceVersion)
-	key, storedObj := testPropagateStore(ctx, t, store, &example.Pod{ObjectMeta: metav1.ObjectMeta{Name: "foo"}})
+
+	storedObj := &example.Pod{}
+	if err := store.GuaranteedUpdate(ctx, key, storedObj, false, nil,
+		func(_ runtime.Object, _ storage.ResponseMeta) (runtime.Object, *uint64, error) {
+			newPod := prevStoredObj.DeepCopy()
+			newPod.Annotations = map[string]string{"version": "second"}
+			return newPod, nil, nil
+		}, nil); err != nil {
+		t.Fatalf("update failed: %v", err)
+	}
 	currentRV, _ := strconv.Atoi(storedObj.ResourceVersion)
 
 	tests := []struct {
 		name                 string
 		key                  string
 		pred                 storage.SelectionPredicate
-		expectedOut      []*example.Pod
+		expectedOut          []example.Pod
+		expectedAlternatives [][]example.Pod
 		rv                   string
 		rvMatch              metav1.ResourceVersionMatch
 		expectRVTooLarge     bool
@@ -1066,59 +1076,59 @@ func RunTestGetListNonRecursive(ctx context.Context, t *testing.T, store storage
 		name:        "existing key",
 		key:         key,
 		pred:        storage.Everything,
-		expectedOut: []*example.Pod{storedObj},
+		expectedOut: []example.Pod{*storedObj},
 	}, {
 		name:                 "existing key, resourceVersion=0",
 		key:                  key,
 		pred:                 storage.Everything,
-		expectedOut: []*example.Pod{storedObj},
+		expectedAlternatives: [][]example.Pod{nil, {*storedObj}},
 		rv:                   "0",
 	}, {
 		name:                 "existing key, resourceVersion=0, resourceVersionMatch=notOlderThan",
 		key:                  key,
 		pred:                 storage.Everything,
-		expectedOut: []*example.Pod{storedObj},
+		expectedAlternatives: [][]example.Pod{nil, {*storedObj}},
 		rv:                   "0",
 		rvMatch:              metav1.ResourceVersionMatchNotOlderThan,
-	}, {
-		name:        "existing key, resourceVersion=current",
-		key:         key,
-		pred:        storage.Everything,
-		expectedOut: []*example.Pod{storedObj},
-		rv:          fmt.Sprintf("%d", currentRV),
-	}, {
-		name:        "existing key, resourceVersion=current, resourceVersionMatch=notOlderThan",
-		key:         key,
-		pred:        storage.Everything,
-		expectedOut: []*example.Pod{storedObj},
-		rv:          fmt.Sprintf("%d", currentRV),
-		rvMatch:     metav1.ResourceVersionMatchNotOlderThan,
 	}, {
 		name:                 "existing key, resourceVersion=previous, resourceVersionMatch=notOlderThan",
 		key:                  key,
 		pred:                 storage.Everything,
-		expectedOut: []*example.Pod{storedObj},
+		expectedAlternatives: [][]example.Pod{{*prevStoredObj}, {*storedObj}},
 		rv:                   fmt.Sprintf("%d", prevRV),
 		rvMatch:              metav1.ResourceVersionMatchNotOlderThan,
+	}, {
+		name:        "existing key, resourceVersion=current, resourceVersionMatch=notOlderThan",
+		key:         key,
+		pred:        storage.Everything,
+		expectedOut: []example.Pod{*storedObj},
+		rv:          fmt.Sprintf("%d", currentRV),
+		rvMatch:     metav1.ResourceVersionMatchNotOlderThan,
+	}, {
+		name:        "existing key, resourceVersion=current",
+		key:         key,
+		pred:        storage.Everything,
+		expectedOut: []example.Pod{*storedObj},
+		rv:          fmt.Sprintf("%d", currentRV),
 	}, {
 		name:        "existing key, resourceVersion=current, resourceVersionMatch=exact",
 		key:         key,
 		pred:        storage.Everything,
-		expectedOut: []*example.Pod{storedObj},
+		expectedOut: []example.Pod{*storedObj},
 		rv:          fmt.Sprintf("%d", currentRV),
 		rvMatch:     metav1.ResourceVersionMatchExact,
 	}, {
-		name:        "existing key, resourceVersion=current, resourceVersionMatch=exact",
-		key:         prevKey,
+		name:        "existing key, resourceVersion=previous, resourceVersionMatch=exact",
+		key:         key,
 		pred:        storage.Everything,
-		expectedOut: []*example.Pod{prevStoredObj},
+		expectedOut: []example.Pod{*prevStoredObj},
 		rv:          fmt.Sprintf("%d", prevRV),
 		rvMatch:     metav1.ResourceVersionMatchExact,
 	}, {
 		name:             "existing key, resourceVersion=too high",
 		key:              key,
 		pred:             storage.Everything,
-		expectedOut:      []*example.Pod{storedObj},
+		expectedOut:      []example.Pod{*storedObj},
 		rv:               strconv.FormatInt(math.MaxInt64, 10),
 		expectRVTooLarge: true,
 	}, {
@@ -1164,13 +1174,18 @@ func RunTestGetListNonRecursive(ctx context.Context, t *testing.T, store storage
 			if len(out.ResourceVersion) == 0 {
 				t.Errorf("%s: unset resourceVersion", tt.name)
 			}
-			if len(out.Items) != len(tt.expectedOut) {
-				t.Errorf("%s: length of list want=%d, get=%d", tt.name, len(tt.expectedOut), len(out.Items))
-				return
+
+			if tt.expectedAlternatives == nil {
+				ExpectNoDiff(t, "incorrect list pods", tt.expectedOut, out.Items)
+			} else {
+				toInterfaceSlice := func(podLists [][]example.Pod) []interface{} {
+					result := make([]interface{}, 0, len(podLists))
+					for i := range podLists {
+						result = append(result, podLists[i])
 					}
-			for j, wantPod := range tt.expectedOut {
-				getPod := &out.Items[j]
-				ExpectNoDiff(t, fmt.Sprintf("%s: incorrect pod", tt.name), wantPod, getPod)
+					return result
+				}
+				ExpectContains(t, "incorrect list pods", toInterfaceSlice(tt.expectedAlternatives), out.Items)
 			}
 		})
 	}

staging/src/k8s.io/apiserver/pkg/storage/tests/cacher_test.go

@@ -170,62 +170,9 @@ func TestGet(t *testing.T) {
 }
 
 func TestGetListNonRecursive(t *testing.T) {
-	server, etcdStorage := newEtcdTestStorage(t, etcd3testing.PathPrefix())
-	defer server.Terminate(t)
-	cacher, _, err := newTestCacher(etcdStorage)
-	if err != nil {
-		t.Fatalf("Couldn't create cacher: %v", err)
-	}
-	defer cacher.Stop()
-
-	storedObj := updatePod(t, etcdStorage, makeTestPod("foo"), nil)
-	key := "pods/" + storedObj.Namespace + "/" + storedObj.Name
-
-	tests := []struct {
-		key         string
-		pred        storage.SelectionPredicate
-		expectedOut []*example.Pod
-	}{{ // test non-recursive GetList on existing key
-		key:         key,
-		pred:        storage.Everything,
-		expectedOut: []*example.Pod{storedObj},
-	}, { // test non-recursive GetList on non-existing key
-		key:         "/non-existing",
-		pred:        storage.Everything,
-		expectedOut: nil,
-	}, { // test non-recursive GetList with matching pod name
-		key: "/non-existing",
-		pred: storage.SelectionPredicate{
-			Label: labels.Everything(),
-			Field: fields.ParseSelectorOrDie("metadata.name!=" + storedObj.Name),
-			GetAttrs: func(obj runtime.Object) (labels.Set, fields.Set, error) {
-				pod := obj.(*example.Pod)
-				return nil, fields.Set{"metadata.name": pod.Name}, nil
-			},
-		},
-		expectedOut: nil,
-	}}
-
-	for i, tt := range tests {
-		out := &example.PodList{}
-		err := cacher.GetList(context.TODO(), tt.key, storage.ListOptions{Predicate: tt.pred, Recursive: false}, out)
-		if err != nil {
-			t.Fatalf("GetList failed: %v", err)
-		}
-		if len(out.ResourceVersion) == 0 {
-			t.Errorf("#%d: unset resourceVersion", i)
-		}
-		if len(out.Items) != len(tt.expectedOut) {
-			t.Errorf("#%d: length of list want=%d, get=%d", i, len(tt.expectedOut), len(out.Items))
-			continue
-		}
-		for j, wantPod := range tt.expectedOut {
-			getPod := &out.Items[j]
-			if !reflect.DeepEqual(wantPod, getPod) {
-				t.Errorf("#%d: pod want=%#v, get=%#v", i, wantPod, getPod)
-			}
-		}
-	}
+	ctx, cacher, terminate := testSetup(t)
+	defer terminate()
+	storagetesting.RunTestGetListNonRecursive(ctx, t, cacher)
 }
 
 func TestList(t *testing.T) {