allow apigroups to opt out of proto round trip testing

pkg/api/serialization_proto_test.go

@@ -33,12 +33,18 @@ import (
 	"k8s.io/kubernetes/pkg/runtime"
 	"k8s.io/kubernetes/pkg/runtime/serializer/protobuf"
 	"k8s.io/kubernetes/pkg/util/diff"
+	"k8s.io/kubernetes/pkg/util/sets"
 )
 
+var nonProtobaleAPIGroups = sets.NewString()
+
 func init() {
-	codecsToTest = append(codecsToTest, func(version unversioned.GroupVersion, item runtime.Object) (runtime.Codec, error) {
+	codecsToTest = append(codecsToTest, func(version unversioned.GroupVersion, item runtime.Object) (runtime.Codec, bool, error) {
+		if nonProtobaleAPIGroups.Has(version.Group) {
+			return nil, false, nil
+		}
 		s := protobuf.NewSerializer(api.Scheme, api.Scheme, "application/arbitrary.content.type")
-		return api.Codecs.CodecForVersions(s, s, testapi.ExternalGroupVersions(), nil), nil
+		return api.Codecs.CodecForVersions(s, s, testapi.ExternalGroupVersions(), nil), true, nil
 	})
 }
 

pkg/api/serialization_test.go

@@ -51,9 +51,10 @@ import (
 
 var fuzzIters = flag.Int("fuzz-iters", 20, "How many fuzzing iterations to do.")
 
-var codecsToTest = []func(version unversioned.GroupVersion, item runtime.Object) (runtime.Codec, error){
-	func(version unversioned.GroupVersion, item runtime.Object) (runtime.Codec, error) {
-		return testapi.GetCodecForObject(item)
+var codecsToTest = []func(version unversioned.GroupVersion, item runtime.Object) (runtime.Codec, bool, error){
+	func(version unversioned.GroupVersion, item runtime.Object) (runtime.Codec, bool, error) {
+		c, err := testapi.GetCodecForObject(item)
+		return c, true, err
 	},
 }
 
@@ -135,11 +136,14 @@ func roundTripSame(t *testing.T, group testapi.TestGroup, item runtime.Object, e
 	version := *group.GroupVersion()
 	codecs := []runtime.Codec{}
 	for _, fn := range codecsToTest {
-		codec, err := fn(version, item)
+		codec, ok, err := fn(version, item)
 		if err != nil {
 			t.Errorf("unable to get codec: %v", err)
 			return
 		}
+		if !ok {
+			continue
+		}
 		codecs = append(codecs, codec)
 	}