protoc-gen-go: add test case for deprecated oneof field

2 files changed, 108 insertions, 21 deletions

diff --git a/protoc-gen-go/testdata/deprecated/deprecated.pb.go b/protoc-gen-go/testdata/deprecated/deprecated.pb.go
index fed0a241..f35a4e0a 100644
--- a/protoc-gen-go/testdata/deprecated/deprecated.pb.go
+++ b/protoc-gen-go/testdata/deprecated/deprecated.pb.go
@@ -84,10 +84,15 @@ var xxx_messageInfo_DeprecatedRequest proto.InternalMessageInfo
 // Deprecated: Do not use.
 type DeprecatedResponse struct {
 	// DeprecatedField contains a DeprecatedEnum.
-	DeprecatedField      DeprecatedEnum `protobuf:"varint,1,opt,name=deprecated_field,json=deprecatedField,proto3,enum=deprecated.DeprecatedEnum" json:"deprecated_field,omitempty"` // Deprecated: Do not use.
-	XXX_NoUnkeyedLiteral struct{}       `json:"-"`
-	XXX_unrecognized     []byte         `json:"-"`
-	XXX_sizecache        int32          `json:"-"`
+	DeprecatedField DeprecatedEnum `protobuf:"varint,1,opt,name=deprecated_field,json=deprecatedField,proto3,enum=deprecated.DeprecatedEnum" json:"deprecated_field,omitempty"` // Deprecated: Do not use.
+	// DeprecatedOneof contains a deprecated field.
+	//
+	// Types that are valid to be assigned to DeprecatedOneof:
+	//	*DeprecatedResponse_DeprecatedOneofField
+	DeprecatedOneof      isDeprecatedResponse_DeprecatedOneof `protobuf_oneof:"deprecated_oneof"`
+	XXX_NoUnkeyedLiteral struct{}                             `json:"-"`
+	XXX_unrecognized     []byte                               `json:"-"`
+	XXX_sizecache        int32                                `json:"-"`
 }
 
 func (m *DeprecatedResponse) Reset()         { *m = DeprecatedResponse{} }
@@ -123,6 +128,81 @@ func (m *DeprecatedResponse) GetDeprecatedField() DeprecatedEnum {
 	return DeprecatedEnum_DEPRECATED
 }
 
+type isDeprecatedResponse_DeprecatedOneof interface {
+	isDeprecatedResponse_DeprecatedOneof()
+}
+
+type DeprecatedResponse_DeprecatedOneofField struct {
+	DeprecatedOneofField string `protobuf:"bytes,2,opt,name=deprecated_oneof_field,json=deprecatedOneofField,proto3,oneof"`
+}
+
+func (*DeprecatedResponse_DeprecatedOneofField) isDeprecatedResponse_DeprecatedOneof() {}
+
+func (m *DeprecatedResponse) GetDeprecatedOneof() isDeprecatedResponse_DeprecatedOneof {
+	if m != nil {
+		return m.DeprecatedOneof
+	}
+	return nil
+}
+
+func (m *DeprecatedResponse) GetDeprecatedOneofField() string {
+	if x, ok := m.GetDeprecatedOneof().(*DeprecatedResponse_DeprecatedOneofField); ok {
+		return x.DeprecatedOneofField
+	}
+	return ""
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*DeprecatedResponse) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _DeprecatedResponse_OneofMarshaler, _DeprecatedResponse_OneofUnmarshaler, _DeprecatedResponse_OneofSizer, []interface{}{
+		(*DeprecatedResponse_DeprecatedOneofField)(nil),
+	}
+}
+
+func _DeprecatedResponse_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*DeprecatedResponse)
+	// deprecated_oneof
+	switch x := m.DeprecatedOneof.(type) {
+	case *DeprecatedResponse_DeprecatedOneofField:
+		b.EncodeVarint(2<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.DeprecatedOneofField)
+	case nil:
+	default:
+		return fmt.Errorf("DeprecatedResponse.DeprecatedOneof has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _DeprecatedResponse_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*DeprecatedResponse)
+	switch tag {
+	case 2: // deprecated_oneof.deprecated_oneof_field
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.DeprecatedOneof = &DeprecatedResponse_DeprecatedOneofField{x}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _DeprecatedResponse_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*DeprecatedResponse)
+	// deprecated_oneof
+	switch x := m.DeprecatedOneof.(type) {
+	case *DeprecatedResponse_DeprecatedOneofField:
+		n += 1 // tag and wire
+		n += proto.SizeVarint(uint64(len(x.DeprecatedOneofField)))
+		n += len(x.DeprecatedOneofField)
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
 func init() {
 	proto.RegisterEnum("deprecated.DeprecatedEnum", DeprecatedEnum_name, DeprecatedEnum_value)
 	proto.RegisterType((*DeprecatedRequest)(nil), "deprecated.DeprecatedRequest")
@@ -132,23 +212,25 @@ func init() {
 func init() { proto.RegisterFile("deprecated/deprecated.proto", fileDescriptor_f64ba265cd7eae3f) }
 
 var fileDescriptor_f64ba265cd7eae3f = []byte{
-	// 248 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x92, 0x4e, 0x49, 0x2d, 0x28,
-	0x4a, 0x4d, 0x4e, 0x2c, 0x49, 0x4d, 0xd1, 0x47, 0x30, 0xf5, 0x0a, 0x8a, 0xf2, 0x4b, 0xf2, 0x85,
-	0xb8, 0x10, 0x22, 0x4a, 0xe2, 0x5c, 0x82, 0x2e, 0x70, 0x5e, 0x50, 0x6a, 0x61, 0x69, 0x6a, 0x71,
-	0x89, 0x15, 0x93, 0x04, 0xa3, 0x52, 0x32, 0x97, 0x10, 0xb2, 0x44, 0x71, 0x41, 0x7e, 0x5e, 0x71,
-	0xaa, 0x90, 0x27, 0x97, 0x00, 0x42, 0x73, 0x7c, 0x5a, 0x66, 0x6a, 0x4e, 0x8a, 0x04, 0xa3, 0x02,
-	0xa3, 0x06, 0x9f, 0x91, 0x94, 0x1e, 0x92, 0x3d, 0x08, 0x9d, 0xae, 0x79, 0xa5, 0xb9, 0x4e, 0x4c,
-	0x12, 0x8c, 0x41, 0xfc, 0x08, 0x69, 0x37, 0x90, 0x36, 0x90, 0x25, 0x5a, 0x1a, 0x5c, 0x7c, 0xa8,
-	0x4a, 0x85, 0x84, 0xb8, 0xb8, 0x5c, 0x5c, 0x03, 0x82, 0x5c, 0x9d, 0x1d, 0x43, 0x5c, 0x5d, 0x04,
-	0x18, 0xa4, 0x98, 0x38, 0x18, 0xa5, 0x98, 0x24, 0x18, 0x8d, 0xf2, 0x90, 0xdd, 0x19, 0x9c, 0x5a,
-	0x54, 0x96, 0x99, 0x9c, 0x2a, 0x14, 0x82, 0xac, 0xdd, 0x39, 0x31, 0x27, 0x47, 0x48, 0x16, 0xbb,
-	0x2b, 0xa0, 0x1e, 0x93, 0x92, 0xc3, 0x25, 0x0d, 0xf1, 0x9e, 0x12, 0x73, 0x07, 0x13, 0xa3, 0x14,
-	0x88, 0x70, 0x72, 0x8c, 0xb2, 0x49, 0xcf, 0x2c, 0xc9, 0x28, 0x4d, 0xd2, 0x4b, 0xce, 0xcf, 0xd5,
-	0x4f, 0xcf, 0xcf, 0x49, 0xcc, 0x4b, 0xd7, 0x07, 0x07, 0x5f, 0x52, 0x69, 0x1a, 0x84, 0x91, 0xac,
-	0x9b, 0x9e, 0x9a, 0xa7, 0x9b, 0x9e, 0xaf, 0x5f, 0x92, 0x5a, 0x5c, 0x92, 0x92, 0x58, 0x92, 0x88,
-	0x14, 0xd2, 0x3b, 0x18, 0x19, 0x93, 0xd8, 0xc0, 0xaa, 0x8c, 0x01, 0x01, 0x00, 0x00, 0xff, 0xff,
-	0x0e, 0xf5, 0x6c, 0x87, 0x8c, 0x01, 0x00, 0x00,
+	// 287 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x74, 0x91, 0xcd, 0x4a, 0xf3, 0x40,
+	0x14, 0x86, 0x7b, 0xe6, 0x83, 0x0f, 0x9d, 0x45, 0xad, 0x83, 0x68, 0x88, 0x28, 0x25, 0xab, 0x20,
+	0x34, 0x81, 0xba, 0x2b, 0x6e, 0x9a, 0x26, 0xa2, 0x2b, 0x25, 0x76, 0xe5, 0x46, 0xf2, 0x73, 0x12,
+	0x03, 0xe9, 0x4c, 0x4c, 0x26, 0x5e, 0x83, 0xf7, 0xe3, 0xc6, 0xcb, 0x93, 0x49, 0x8b, 0x33, 0x05,
+	0xdd, 0x84, 0x93, 0x79, 0xdf, 0xe7, 0xfc, 0xd2, 0xf3, 0x1c, 0x9b, 0x16, 0xb3, 0x44, 0x62, 0xee,
+	0xeb, 0xd0, 0x6b, 0x5a, 0x21, 0x05, 0xa3, 0xfa, 0xc5, 0x39, 0xa3, 0xc7, 0xe1, 0xcf, 0x5f, 0x8c,
+	0x6f, 0x3d, 0x76, 0x72, 0x41, 0x2c, 0x70, 0x3e, 0x81, 0x32, 0x53, 0xe9, 0x1a, 0xc1, 0x3b, 0x64,
+	0xf7, 0x74, 0xa2, 0xe9, 0x97, 0xa2, 0xc2, 0x3a, 0xb7, 0x60, 0x0a, 0xee, 0x78, 0x6e, 0x7b, 0x46,
+	0x21, 0x4d, 0x46, 0xbc, 0xdf, 0x04, 0xc4, 0x82, 0xf8, 0x48, 0xcb, 0xb7, 0x0a, 0x63, 0x0b, 0x7a,
+	0x6a, 0xa4, 0x12, 0x1c, 0x45, 0xb1, 0x4b, 0x48, 0xa6, 0xe0, 0x1e, 0x2a, 0xe8, 0x6e, 0x14, 0x9f,
+	0x68, 0xcf, 0x83, 0xb2, 0x0c, 0xac, 0xea, 0x30, 0x60, 0x7b, 0xad, 0x0c, 0xfc, 0x95, 0x4b, 0xc7,
+	0xfb, 0xa5, 0x19, 0xa3, 0x34, 0x8c, 0x1e, 0xe3, 0x68, 0xb5, 0x5c, 0x47, 0xe1, 0x64, 0x64, 0x93,
+	0x03, 0xb0, 0x89, 0x05, 0x73, 0x6e, 0x0e, 0xfe, 0x84, 0xed, 0x7b, 0x95, 0x21, 0x5b, 0x9b, 0xf8,
+	0x2a, 0xa9, 0x6b, 0x76, 0xf1, 0xfb, 0x54, 0xbb, 0x4d, 0xd9, 0x97, 0x7f, 0xc9, 0xdb, 0x75, 0x39,
+	0xff, 0x3e, 0x08, 0xd8, 0xea, 0x13, 0x2c, 0x9f, 0x6f, 0xca, 0x4a, 0xbe, 0xf6, 0xa9, 0x97, 0x89,
+	0x8d, 0x5f, 0x8a, 0x3a, 0xe1, 0xa5, 0x3f, 0xdc, 0x23, 0xed, 0x8b, 0x6d, 0x90, 0xcd, 0x4a, 0xe4,
+	0xb3, 0x52, 0xf8, 0x12, 0x3b, 0x99, 0x27, 0x32, 0x31, 0x4e, 0xf7, 0x05, 0x90, 0xfe, 0x1f, 0x5c,
+	0xd7, 0xdf, 0x01, 0x00, 0x00, 0xff, 0xff, 0x08, 0xd5, 0xa0, 0x89, 0xdd, 0x01, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
diff --git a/protoc-gen-go/testdata/deprecated/deprecated.proto b/protoc-gen-go/testdata/deprecated/deprecated.proto
index b314166d..192b1582 100644
--- a/protoc-gen-go/testdata/deprecated/deprecated.proto
+++ b/protoc-gen-go/testdata/deprecated/deprecated.proto
@@ -49,6 +49,11 @@ message DeprecatedResponse {
   option deprecated = true;
   // DeprecatedField contains a DeprecatedEnum.
   DeprecatedEnum deprecated_field = 1 [deprecated=true];
+  // DeprecatedOneof contains a deprecated field.
+  oneof deprecated_oneof {
+    // DeprecatedOneofField is a deprecated field.
+    string deprecated_oneof_field = 2 [deprecated=true];
+  }
 }
 
 // DeprecatedEnum contains deprecated values.