Golang meta.TypeAccessor函数代码示例

// TestTypes will try to roundtrip all OpenShift and Kubernetes stable api types
func TestTypes(t *testing.T) {
	for kind, reflectType := range kapi.Scheme.KnownTypes(osapi.SchemeGroupVersion) {
		if !strings.Contains(reflectType.PkgPath(), "/origin/") && reflectType.PkgPath() != "k8s.io/kubernetes/pkg/api" {
			continue
		}
		if nonInternalRoundTrippableTypes.Has(kind) {
			continue
		}
		// Try a few times, since runTest uses random values.
		for i := 0; i < fuzzIters; i++ {
			item, err := kapi.Scheme.New(osapi.SchemeGroupVersion.WithKind(kind))
			if err != nil {
				t.Errorf("Couldn't make a %v? %v", kind, err)
				continue
			}
			if _, err := meta.TypeAccessor(item); err != nil {
				t.Fatalf("%q is not a TypeMeta and cannot be tested - add it to nonRoundTrippableTypes: %v", kind, err)
			}
			seed := rand.Int63()

			if versions, ok := skipStandardVersions[kind]; ok {
				for _, v := range versions {
					t.Logf("About to test %v with %q", kind, v)
					fuzzInternalObject(t, v, item, seed)
					roundTrip(t, kapi.Codecs.LegacyCodec(v), item)
				}
				continue
			}
			t.Logf(`About to test %v with "v1"`, kind)
			fuzzInternalObject(t, v1.SchemeGroupVersion, item, seed)
			roundTrip(t, kapi.Codecs.LegacyCodec(v1.SchemeGroupVersion), item)
		}
	}
}

func TestTypes(t *testing.T) {
	for kind, reflectType := range api.Scheme.KnownTypes("") {
		if !strings.Contains(reflectType.PkgPath(), "/origin/") {
			continue
		}
		t.Logf("About to test %v", reflectType)
		// Try a few times, since runTest uses random values.
		for i := 0; i < fuzzIters; i++ {
			item, err := api.Scheme.New("", kind)
			if err != nil {
				t.Errorf("Couldn't make a %v? %v", kind, err)
				continue
			}
			if _, err := meta.TypeAccessor(item); err != nil {
				t.Fatalf("%q is not a TypeMeta and cannot be tested - add it to nonRoundTrippableTypes: %v", kind, err)
			}
			seed := rand.Int63()

			if versions, ok := skipStandardVersions[kind]; ok {
				for _, v := range versions {
					fuzzInternalObject(t, "", item, seed)
					roundTrip(t, runtime.CodecFor(api.Scheme, v), item)
				}
				continue
			}
			fuzzInternalObject(t, "", item, seed)
			roundTrip(t, osapi.Codec, item)
			fuzzInternalObject(t, "v1beta3", item, seed)
			roundTrip(t, v1beta3.Codec, item)
			fuzzInternalObject(t, "v1", item, seed)
			roundTrip(t, v1.Codec, item)
		}
	}
}

func fuzzInternalObject(t *testing.T, forVersion unversioned.GroupVersion, item runtime.Object, seed int64) runtime.Object {
	apitesting.FuzzerFor(t, forVersion, rand.NewSource(seed)).Fuzz(item)

	j, err := meta.TypeAccessor(item)
	if err != nil {
		t.Fatalf("Unexpected error %v for %#v", err, item)
	}
	j.SetKind("")
	j.SetAPIVersion("")

	return item
}

func doRoundTripTest(kind string, t *testing.T) {
	item, err := api.Scheme.New("", kind)
	if err != nil {
		t.Fatalf("Couldn't make a %v? %v", kind, err)
	}
	if _, err := meta.TypeAccessor(item); err != nil {
		t.Fatalf("%q is not a TypeMeta and cannot be tested - add it to nonRoundTrippableTypes: %v", kind, err)
	}
	roundTripSame(t, item, nonRoundTrippableTypesByVersion[kind]...)
	if !nonInternalRoundTrippableTypes.Has(kind) {
		roundTrip(t, api.Codec, fuzzInternalObject(t, "", item, rand.Int63()))
	}
}

func TestGenericTypeMeta(t *testing.T) {
	type TypeMeta struct {
		Kind              string               `json:"kind,omitempty"`
		Namespace         string               `json:"namespace,omitempty"`
		Name              string               `json:"name,omitempty"`
		GenerateName      string               `json:"generateName,omitempty"`
		UID               string               `json:"uid,omitempty"`
		CreationTimestamp unversioned.Time     `json:"creationTimestamp,omitempty"`
		SelfLink          string               `json:"selfLink,omitempty"`
		ResourceVersion   string               `json:"resourceVersion,omitempty"`
		APIVersion        string               `json:"apiVersion,omitempty"`
		Labels            map[string]string    `json:"labels,omitempty"`
		Annotations       map[string]string    `json:"annotations,omitempty"`
		OwnerReferences   []api.OwnerReference `json:"ownerReferences,omitempty"`
		Finalizers        []string             `json:"finalizers,omitempty"`
	}

	j := struct{ TypeMeta }{TypeMeta{APIVersion: "a", Kind: "b"}}

	typeAccessor, err := meta.TypeAccessor(&j)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if e, a := "a", typeAccessor.GetAPIVersion(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
	if e, a := "b", typeAccessor.GetKind(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}

	typeAccessor.SetAPIVersion("c")
	typeAccessor.SetKind("d")

	if e, a := "c", j.APIVersion; e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
	if e, a := "d", j.Kind; e != a {
		t.Errorf("expected %v, got %v", e, a)
	}

	typeAccessor.SetAPIVersion("d")
	typeAccessor.SetKind("e")

	if e, a := "d", j.APIVersion; e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
	if e, a := "e", j.Kind; e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}

func doRoundTripTest(group testapi.TestGroup, kind string, t *testing.T) {
	item, err := api.Scheme.New(group.InternalGroupVersion().WithKind(kind))
	if err != nil {
		t.Fatalf("Couldn't make a %v? %v", kind, err)
	}
	if _, err := meta.TypeAccessor(item); err != nil {
		t.Fatalf("%q is not a TypeMeta and cannot be tested - add it to nonRoundTrippableTypes: %v", kind, err)
	}
	if api.Scheme.Recognizes(group.GroupVersion().WithKind(kind)) {
		roundTripSame(t, group, item, nonRoundTrippableTypesByVersion[kind]...)
	}
	if !nonInternalRoundTrippableTypes.Has(kind) && api.Scheme.Recognizes(group.GroupVersion().WithKind(kind)) {
		roundTrip(t, group.Codec(), fuzzInternalObject(t, group.InternalGroupVersion(), item, rand.Int63()))
	}
}

// TestTypes will try to roundtrip all OpenShift and Kubernetes stable api types
func TestTypes(t *testing.T) {
	for kind := range configapi.Scheme.KnownTypes(configapi.SchemeGroupVersion) {
		// Try a few times, since runTest uses random values.
		for i := 0; i < fuzzIters; i++ {
			item, err := configapi.Scheme.New(configapi.SchemeGroupVersion.WithKind(kind))
			if err != nil {
				t.Errorf("Couldn't make a %v? %v", kind, err)
				continue
			}
			if _, err := meta.TypeAccessor(item); err != nil {
				t.Fatalf("%q is not a TypeMeta and cannot be tested - add it to nonRoundTrippableTypes: %v", kind, err)
			}
			seed := rand.Int63()

			fuzzInternalObject(t, configapiv1.SchemeGroupVersion, item, seed)
			roundTrip(t, serializer.NewCodecFactory(configapi.Scheme).LegacyCodec(configapiv1.SchemeGroupVersion), item)
		}
	}
}

// TestTypes will try to roundtrip all OpenShift and Kubernetes stable api types
func TestTypes(t *testing.T) {
	internalVersionToExternalVersions := map[unversioned.GroupVersion][]unversioned.GroupVersion{
		osapi.SchemeGroupVersion:    {v1.SchemeGroupVersion},
		quotaapi.SchemeGroupVersion: {quotaapiv1.SchemeGroupVersion},
	}

	for internalVersion, externalVersions := range internalVersionToExternalVersions {
		for kind, reflectType := range kapi.Scheme.KnownTypes(internalVersion) {
			if !strings.Contains(reflectType.PkgPath(), "github.com/openshift/origin/") && reflectType.PkgPath() != "github.com/openshift/origin/vendor/k8s.io/kubernetes/pkg/api" {
				continue
			}
			if nonInternalRoundTrippableTypes.Has(kind) {
				continue
			}

			for _, externalVersion := range externalVersions {
				// Try a few times, since runTest uses random values.
				for i := 0; i < fuzzIters; i++ {
					item, err := kapi.Scheme.New(internalVersion.WithKind(kind))
					if err != nil {
						t.Errorf("Couldn't make a %v? %v", kind, err)
						continue
					}
					if _, err := meta.TypeAccessor(item); err != nil {
						t.Fatalf("%q is not a TypeMeta and cannot be tested - add it to nonRoundTrippableTypes: %v", kind, err)
					}
					seed := rand.Int63()

					if versions, ok := skipStandardVersions[kind]; ok {
						for _, v := range versions {
							fuzzInternalObject(t, v, item, seed)
							roundTrip(t, kapi.Codecs.LegacyCodec(v), item)
						}
						continue
					}
					fuzzInternalObject(t, externalVersion, item, seed)
					roundTripWithAllCodecs(t, externalVersion, item)
				}
			}
		}

	}
}

func fuzzImageSignature(t *testing.T, signature *api.ImageSignature, seed int64) *api.ImageSignature {
	f := apitesting.FuzzerFor(t, v1.SchemeGroupVersion, rand.NewSource(seed))
	f.Funcs(
		func(j *api.ImageSignature, c fuzz.Continue) {
			c.FuzzNoCustom(j)
			j.Annotations = make(map[string]string)
			j.Labels = make(map[string]string)
			j.Conditions = []api.SignatureCondition{}
			j.SignedClaims = make(map[string]string)

			j.Content = []byte(c.RandString())
			for i := 0; i < c.Rand.Intn(3)+2; i++ {
				j.Labels[c.RandString()] = c.RandString()
				j.Annotations[c.RandString()] = c.RandString()
				j.SignedClaims[c.RandString()] = c.RandString()
			}
			for i := 0; i < c.Rand.Intn(3)+2; i++ {
				cond := api.SignatureCondition{}
				c.Fuzz(&cond)
				j.Conditions = append(j.Conditions, cond)
			}
		},
	)

	updated := api.ImageSignature{}
	f.Fuzz(&updated)
	updated.Namespace = signature.Namespace
	updated.Name = signature.Name

	j, err := meta.TypeAccessor(signature)
	if err != nil {
		t.Fatalf("Unexpected error %v for %#v", err, signature)
	}
	j.SetKind("")
	j.SetAPIVersion("")

	return &updated
}

func fuzzImage(t *testing.T, image *api.Image, seed int64) *api.Image {
	f := apitesting.FuzzerFor(t, v1.SchemeGroupVersion, rand.NewSource(seed))
	f.Funcs(
		func(j *api.Image, c fuzz.Continue) {
			c.FuzzNoCustom(j)
			j.Annotations = make(map[string]string)
			j.Labels = make(map[string]string)
			j.Signatures = make([]api.ImageSignature, c.Rand.Intn(3)+2)
			for i := range j.Signatures {
				sign := &j.Signatures[i]
				c.Fuzz(sign)
				sign.Conditions = make([]api.SignatureCondition, c.Rand.Intn(3)+2)
				for ci := range sign.Conditions {
					cond := &sign.Conditions[ci]
					c.Fuzz(cond)
				}
			}
			for i := 0; i < c.Rand.Intn(3)+2; i++ {
				j.Labels[c.RandString()] = c.RandString()
				j.Annotations[c.RandString()] = c.RandString()
			}
		},
	)

	updated := api.Image{}
	f.Fuzz(&updated)
	updated.Namespace = image.Namespace
	updated.Name = image.Name

	j, err := meta.TypeAccessor(image)
	if err != nil {
		t.Fatalf("Unexpected error %v for %#v", err, image)
	}
	j.SetKind("")
	j.SetAPIVersion("")

	return &updated
}

func TestRoundTripTypes(t *testing.T) {
	// api.Scheme.Log(t)
	// defer api.Scheme.Log(nil)

	for kind := range api.Scheme.KnownTypes("") {
		if nonRoundTrippableTypes.Has(kind) {
			continue
		}
		// Try a few times, since runTest uses random values.
		for i := 0; i < *fuzzIters; i++ {
			item, err := api.Scheme.New("", kind)
			if err != nil {
				t.Fatalf("Couldn't make a %v? %v", kind, err)
			}
			if _, err := meta.TypeAccessor(item); err != nil {
				t.Fatalf("%q is not a TypeMeta and cannot be tested - add it to nonRoundTrippableTypes: %v", kind, err)
			}
			roundTripSame(t, item, nonRoundTrippableTypesByVersion[kind]...)
			if !nonInternalRoundTrippableTypes.Has(kind) {
				roundTrip(t, api.Codec, fuzzInternalObject(t, "", item, rand.Int63()))
			}
		}
	}
}

//.........这里部分代码省略.........
			j.From.Kind = "ImageStreamTag"
			j.From.Name = "image:tag"
			j.From.APIVersion = ""
			j.From.ResourceVersion = ""
			j.From.FieldPath = ""
		},
		func(j *build.BuildOutput, c fuzz.Continue) {
			c.FuzzNoCustom(j)
			if j.To != nil && (len(j.To.Kind) == 0 || j.To.Kind == "ImageStream") {
				j.To.Kind = "ImageStreamTag"
			}
			if j.To != nil && strings.Contains(j.To.Name, ":") {
				j.To.Name = strings.Replace(j.To.Name, ":", "-", -1)
			}
		},
		func(j *route.RouteSpec, c fuzz.Continue) {
			c.FuzzNoCustom(j)
			j.To = api.ObjectReference{
				Kind: "Service",
				Name: j.To.Name,
			}
		},
		func(j *deploy.DeploymentConfig, c fuzz.Continue) {
			c.FuzzNoCustom(j)
			j.Triggers = []deploy.DeploymentTriggerPolicy{{Type: deploy.DeploymentTriggerOnConfigChange}}
		},
		func(j *deploy.DeploymentStrategy, c fuzz.Continue) {
			c.FuzzNoCustom(j)
			mkintp := func(i int) *int64 {
				v := int64(i)
				return &v
			}
			switch c.Intn(3) {
			case 0:
				// TODO: we should not have to set defaults, instead we should be able
				// to detect defaults were applied.
				j.Type = deploy.DeploymentStrategyTypeRolling
				j.RollingParams = &deploy.RollingDeploymentStrategyParams{
					IntervalSeconds:     mkintp(1),
					UpdatePeriodSeconds: mkintp(1),
					TimeoutSeconds:      mkintp(120),
				}
			case 1:
				j.Type = deploy.DeploymentStrategyTypeRecreate
				j.RollingParams = nil
			case 2:
				j.Type = deploy.DeploymentStrategyTypeCustom
				j.RollingParams = nil
			}
		},
		func(j *deploy.DeploymentCauseImageTrigger, c fuzz.Continue) {
			c.FuzzNoCustom(j)
			specs := []string{"", "a/b", "a/b/c", "a:5000/b/c", "a/b", "a/b"}
			tags := []string{"", "stuff", "other"}
			j.RepositoryName = specs[c.Intn(len(specs))]
			if len(j.RepositoryName) > 0 {
				j.Tag = tags[c.Intn(len(tags))]
			} else {
				j.Tag = ""
			}
		},
		func(j *deploy.DeploymentTriggerImageChangeParams, c fuzz.Continue) {
			c.FuzzNoCustom(j)
			specs := []string{"a/b", "a/b/c", "a:5000/b/c", "a/b:latest", "a/[email protected]"}
			j.From.Kind = "DockerImage"
			j.From.Name = specs[c.Intn(len(specs))]
			if ref, err := image.ParseDockerImageReference(j.From.Name); err == nil {
				j.Tag = ref.Tag
				ref.Tag, ref.ID = "", ""
				j.RepositoryName = ref.String()
			}
		},
		func(j *runtime.EmbeddedObject, c fuzz.Continue) {
			// runtime.EmbeddedObject causes a panic inside of fuzz because runtime.Object isn't handled.
		},
		func(t *time.Time, c fuzz.Continue) {
			// This is necessary because the standard fuzzed time.Time object is
			// completely nil, but when JSON unmarshals dates it fills in the
			// unexported loc field with the time.UTC object, resulting in
			// reflect.DeepEqual returning false in the round trip tests. We solve it
			// by using a date that will be identical to the one JSON unmarshals.
			*t = time.Date(2000, 1, 1, 1, 1, 1, 0, time.UTC)
		},
		func(u64 *uint64, c fuzz.Continue) {
			// TODO: uint64's are NOT handled right.
			*u64 = c.RandUint64() >> 8
		},
	)

	f.Fuzz(item)

	j, err := meta.TypeAccessor(item)
	if err != nil {
		t.Fatalf("Unexpected error %v for %#v", err, item)
	}
	j.SetKind("")
	j.SetAPIVersion("")

	return item
}

//.........这里部分代码省略.........
			}
		},
		func(obj *configapi.EtcdStorageConfig, c fuzz.Continue) {
			c.FuzzNoCustom(obj)
			if len(obj.KubernetesStorageVersion) == 0 {
				obj.KubernetesStorageVersion = "v1"
			}
			if len(obj.KubernetesStoragePrefix) == 0 {
				obj.KubernetesStoragePrefix = "kubernetes.io"
			}
			if len(obj.OpenShiftStorageVersion) == 0 {
				obj.OpenShiftStorageVersion = configapi.DefaultOpenShiftStorageVersionLevel
			}
			if len(obj.OpenShiftStoragePrefix) == 0 {
				obj.OpenShiftStoragePrefix = "openshift.io"
			}
		},
		func(obj *configapi.DockerConfig, c fuzz.Continue) {
			c.FuzzNoCustom(obj)
			if len(obj.ExecHandlerName) == 0 {
				obj.ExecHandlerName = configapi.DockerExecHandlerNative
			}
		},
		func(obj *configapi.ServingInfo, c fuzz.Continue) {
			c.FuzzNoCustom(obj)
			if len(obj.BindNetwork) == 0 {
				obj.BindNetwork = "tcp4"
			}
		},
		func(obj *configapi.ImagePolicyConfig, c fuzz.Continue) {
			c.FuzzNoCustom(obj)
			if obj.MaxImagesBulkImportedPerRepository == 0 {
				obj.MaxImagesBulkImportedPerRepository = 5
			}
			if obj.MaxScheduledImageImportsPerMinute == 0 {
				obj.MaxScheduledImageImportsPerMinute = 60
			}
			if obj.ScheduledImageImportMinimumIntervalSeconds == 0 {
				obj.ScheduledImageImportMinimumIntervalSeconds = 15 * 60
			}
		},
		func(obj *configapi.DNSConfig, c fuzz.Continue) {
			c.FuzzNoCustom(obj)
			if len(obj.BindNetwork) == 0 {
				obj.BindNetwork = "tcp4"
			}
		},
		func(obj *configapi.SecurityAllocator, c fuzz.Continue) {
			c.FuzzNoCustom(obj)
			if len(obj.UIDAllocatorRange) == 0 {
				obj.UIDAllocatorRange = "1000000000-1999999999/10000"
			}
			if len(obj.MCSAllocatorRange) == 0 {
				obj.MCSAllocatorRange = "s0:/2"
			}
			if obj.MCSLabelsPerProject == 0 {
				obj.MCSLabelsPerProject = 5
			}
		},
		func(obj *configapi.IdentityProvider, c fuzz.Continue) {
			c.FuzzNoCustom(obj)
			if len(obj.MappingMethod) == 0 {
				// By default, only let one identity provider authenticate a particular user
				// If multiple identity providers collide, the second one in will fail to auth
				// The admin can set this to "add" if they want to allow new identities to join existing users
				obj.MappingMethod = "claim"
			}
		},
		func(s *configapi.StringSource, c fuzz.Continue) {
			if c.RandBool() {
				c.Fuzz(&s.Value)
			} else {
				c.Fuzz(&s.StringSourceSpec)
			}
		},
		func(obj *podnodeapi.PodNodeConstraintsConfig, c fuzz.Continue) {
			c.FuzzNoCustom(obj)
			if obj.NodeSelectorLabelBlacklist == nil {
				obj.NodeSelectorLabelBlacklist = []string{"kubernetes.io/hostname"}
			}
		},
		func(obj *configapi.GrantConfig, c fuzz.Continue) {
			c.FuzzNoCustom(obj)
			if len(obj.ServiceAccountMethod) == 0 {
				obj.ServiceAccountMethod = "prompt"
			}
		},
	)

	f.Fuzz(item)

	j, err := meta.TypeAccessor(item)
	if err != nil {
		t.Fatalf("Unexpected error %v for %#v", err, item)
	}
	j.SetKind("")
	j.SetAPIVersion("")

	return item
}

// Dequeueing an event from eventQueue, updating graph, populating dirty_queue.
func (p *Propagator) processEvent() {
	key, quit := p.eventQueue.Get()
	if quit {
		return
	}
	defer p.eventQueue.Done(key)
	event, ok := key.(event)
	if !ok {
		utilruntime.HandleError(fmt.Errorf("expect an event, got %v", key))
		return
	}
	obj := event.obj
	accessor, err := meta.Accessor(obj)
	if err != nil {
		utilruntime.HandleError(fmt.Errorf("cannot access obj: %v", err))
		return
	}
	typeAccessor, err := meta.TypeAccessor(obj)
	if err != nil {
		utilruntime.HandleError(fmt.Errorf("cannot access obj: %v", err))
		return
	}
	glog.V(6).Infof("Propagator process object: %s/%s, namespace %s, name %s, event type %s", typeAccessor.GetAPIVersion(), typeAccessor.GetKind(), accessor.GetNamespace(), accessor.GetName(), event.eventType)
	// Check if the node already exsits
	existingNode, found := p.uidToNode.Read(accessor.GetUID())
	switch {
	case (event.eventType == addEvent || event.eventType == updateEvent) && !found:
		newNode := &node{
			identity: objectReference{
				OwnerReference: metatypes.OwnerReference{
					APIVersion: typeAccessor.GetAPIVersion(),
					Kind:       typeAccessor.GetKind(),
					UID:        accessor.GetUID(),
					Name:       accessor.GetName(),
				},
				Namespace: accessor.GetNamespace(),
			},
			dependentsLock: &sync.RWMutex{},
			dependents:     make(map[*node]struct{}),
			owners:         accessor.GetOwnerReferences(),
		}
		p.insertNode(newNode)
		// the underlying delta_fifo may combine a creation and deletion into one event
		if shouldOrphanDependents(event, accessor) {
			glog.V(6).Infof("add %s to the orphanQueue", newNode.identity)
			p.gc.orphanQueue.Add(newNode)
		}
	case (event.eventType == addEvent || event.eventType == updateEvent) && found:
		// caveat: if GC observes the creation of the dependents later than the
		// deletion of the owner, then the orphaning finalizer won't be effective.
		if shouldOrphanDependents(event, accessor) {
			glog.V(6).Infof("add %s to the orphanQueue", existingNode.identity)
			p.gc.orphanQueue.Add(existingNode)
		}
		// add/remove owner refs
		added, removed := referencesDiffs(existingNode.owners, accessor.GetOwnerReferences())
		if len(added) == 0 && len(removed) == 0 {
			glog.V(6).Infof("The updateEvent %#v doesn't change node references, ignore", event)
			return
		}
		// update the node itself
		existingNode.owners = accessor.GetOwnerReferences()
		// Add the node to its new owners' dependent lists.
		p.addDependentToOwners(existingNode, added)
		// remove the node from the dependent list of node that are no long in
		// the node's owners list.
		p.removeDependentFromOwners(existingNode, removed)
	case event.eventType == deleteEvent:
		if !found {
			glog.V(6).Infof("%v doesn't exist in the graph, this shouldn't happen", accessor.GetUID())
			return
		}
		p.removeNode(existingNode)
		existingNode.dependentsLock.RLock()
		defer existingNode.dependentsLock.RUnlock()
		for dep := range existingNode.dependents {
			p.gc.dirtyQueue.Add(dep)
		}
	}
}

func TestGenericListMeta(t *testing.T) {
	type TypeMeta struct {
		Kind       string `json:"kind,omitempty"`
		APIVersion string `json:"apiVersion,omitempty"`
	}
	type ListMeta struct {
		SelfLink        string `json:"selfLink,omitempty"`
		ResourceVersion string `json:"resourceVersion,omitempty"`
	}
	type Object struct {
		TypeMeta `json:",inline"`
		ListMeta `json:"metadata"`
	}
	j := Object{
		TypeMeta{
			APIVersion: "a",
			Kind:       "b",
		},
		ListMeta{
			ResourceVersion: "1",
			SelfLink:        "some/place/only/we/know",
		},
	}
	accessor, err := meta.Accessor(&j)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if e, a := "", accessor.GetName(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
	if e, a := "", string(accessor.GetUID()); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
	if e, a := "1", accessor.GetResourceVersion(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
	if e, a := "some/place/only/we/know", accessor.GetSelfLink(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}

	typeAccessor, err := meta.TypeAccessor(&j)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if e, a := "a", typeAccessor.GetAPIVersion(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
	if e, a := "b", typeAccessor.GetKind(); e != a {
		t.Errorf("expected %v, got %v", e, a)
	}

	accessor.SetName("bar")
	accessor.SetUID("other")
	typeAccessor.SetAPIVersion("c")
	typeAccessor.SetKind("d")
	accessor.SetResourceVersion("2")
	accessor.SetSelfLink("google.com")

	// Prove that accessor changes the original object.
	if e, a := "c", j.APIVersion; e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
	if e, a := "d", j.Kind; e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
	if e, a := "2", j.ResourceVersion; e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
	if e, a := "google.com", j.SelfLink; e != a {
		t.Errorf("expected %v, got %v", e, a)
	}
}