withDeadline := WithRequestDeadline(handler, fakeSink, fakeRuleEvaluator,
				func(_ *http.Request, _ *request.RequestInfo) bool { return test.longRunning },
				newSerializer(), requestTimeoutMaximum)
			withDeadline = WithRequestInfo(withDeadline, &fakeRequestResolver{})

			testRequest := newRequest(t, test.requestURL)

			// make sure a default request does not have any deadline set

			recognizes: true,
		},
		{
			in:         []byte{0xff, 0xff, 0xff, 0x01, 0x02, 0x03},
			recognizes: false,
		},
	} {
		t.Run(hex.EncodeToString(tc.in), func(t *testing.T) {
			s := NewSerializer(nil, nil)
			recognizes, unknown, err := s.RecognizesData(tc.in)
			if recognizes != tc.recognizes {
				t.Errorf("expected recognized to be %t, got %t", tc.recognizes, recognizes)
			}
			if unknown {

	typeAcc.SetKind(externalGVK.Kind)
	typeAcc.SetAPIVersion(externalGVK.GroupVersion().String())

	roundTrip(t, scheme, json.NewSerializer(json.DefaultMetaFactory, scheme, scheme, false), object)

	// TODO remove this hack after we're past the intermediate steps
	if !skipProtobuf {
		roundTrip(t, scheme, protobuf.NewSerializer(scheme, scheme), object)
	}
}

// roundTrip applies a single round-trip test to the given runtime object

			t.Fatal(err)
		}
		c.FilledObjects[gvk] = obj
	}

	if c.JSON == nil {
		c.JSON = json.NewSerializer(json.DefaultMetaFactory, c.Scheme, c.Scheme, true)
	}
	if c.YAML == nil {
		c.YAML = json.NewYAMLSerializer(json.DefaultMetaFactory, c.Scheme, c.Scheme)
	}
	if c.Proto == nil {
		c.Proto = protobuf.NewSerializer(c.Scheme, c.Scheme)
	}

	return c
}

func (c *CompatibilityTestOptions) Run(t *testing.T) {

	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
)

func TestRoundtripObjectMeta(t *testing.T) {
	scheme := runtime.NewScheme()
	codecs := serializer.NewCodecFactory(scheme)
	codec := json.NewSerializer(json.DefaultMetaFactory, scheme, scheme, false)
	seed := rand.Int63()
	fuzzer := fuzzer.FuzzerFor(metafuzzer.Funcs, rand.NewSource(seed), codecs)

	N := 1000
	for i := 0; i < N; i++ {

	)
	strictYAMLSerializer := json.NewSerializerWithOptions(
		mf, scheme, scheme,
		json.SerializerOptions{Yaml: true, Pretty: false, Strict: true},
	)
	protoSerializer := protobuf.NewSerializer(scheme, scheme)
	protoRawSerializer := protobuf.NewRawSerializer(scheme, scheme)

	serializers := []serializerType{
		jsonSerializerType,
		{
			AcceptContentTypes: []string{runtime.ContentTypeYAML},

				jsonSerializer := jsonserializer.NewSerializerWithOptions(jsonserializer.DefaultMetaFactory, legacyscheme.Scheme, legacyscheme.Scheme, jsonserializer.SerializerOptions{})
				cborSerializer := cborserializer.NewSerializer(legacyscheme.Scheme, legacyscheme.Scheme)

				// original->JSON->Unstructured
				buf.Reset()
				if err := jsonSerializer.Encode(item, &buf); err != nil {
					t.Fatalf("error encoding native to json: %v", err)

		return false, apierrors.NewInternalError(fmt.Errorf("admission webhook %q attempted to modify the object, which is not supported for this operation", h.Name))
	}

	var patchedJS []byte
	jsonSerializer := json.NewSerializer(json.DefaultMetaFactory, o.GetObjectCreater(), o.GetObjectTyper(), false)
	switch result.PatchType {
	// VerifyAdmissionResponse normalizes to v1 patch types, regardless of the AdmissionReview version used

						case "proto":
							if e, a := "application/vnd.kubernetes.protobuf", result.Header.Get("Content-Type"); e != a {
								t.Errorf("expected Content-Type %v, got %v", e, a)
							}
							if _, _, err := protobuf.NewSerializer(Scheme, Scheme).Decode(content, nil, status); err != nil {
								t.Fatal(err)
							}
						default:
							t.Fatalf("unknown content type %v", contentType)
						}

	gvk := schema.GroupVersionKind{Group: "group", Version: "version", Kind: "MockCacheableObject"}
	creater := &mockCreater{obj: &runtimetesting.MockCacheableObject{}}
	typer := &mockTyper{gvk: &gvk}
	serializer := json.NewSerializer(json.DefaultMetaFactory, creater, typer, false)

	runtimetesting.CacheableObjectTest(t, serializer)
}

type mockCreater struct {
	apiVersion string
	kind       string
	err        error