Add stream tests

Signed-off-by: Derek McGowan <derek@mcg.dev>

internal/test.pb.go

@@ -83,6 +83,61 @@ func (x *TestPayload) GetMetadata() string {
 	return ""
 }
 
+type EchoPayload struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Seq int64  `protobuf:"varint,1,opt,name=seq,proto3" json:"seq,omitempty"`
+	Msg string `protobuf:"bytes,2,opt,name=msg,proto3" json:"msg,omitempty"`
+}
+
+func (x *EchoPayload) Reset() {
+	*x = EchoPayload{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_github_com_containerd_ttrpc_test_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *EchoPayload) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*EchoPayload) ProtoMessage() {}
+
+func (x *EchoPayload) ProtoReflect() protoreflect.Message {
+	mi := &file_github_com_containerd_ttrpc_test_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use EchoPayload.ProtoReflect.Descriptor instead.
+func (*EchoPayload) Descriptor() ([]byte, []int) {
+	return file_github_com_containerd_ttrpc_test_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *EchoPayload) GetSeq() int64 {
+	if x != nil {
+		return x.Seq
+	}
+	return 0
+}
+
+func (x *EchoPayload) GetMsg() string {
+	if x != nil {
+		return x.Msg
+	}
+	return ""
+}
+
 var File_github_com_containerd_ttrpc_test_proto protoreflect.FileDescriptor
 
 var file_github_com_containerd_ttrpc_test_proto_rawDesc = []byte{
@@ -94,10 +149,13 @@ var file_github_com_containerd_ttrpc_test_proto_rawDesc = []byte{
 	0x12, 0x1a, 0x0a, 0x08, 0x64, 0x65, 0x61, 0x64, 0x6c, 0x69, 0x6e, 0x65, 0x18, 0x02, 0x20, 0x01,
 	0x28, 0x03, 0x52, 0x08, 0x64, 0x65, 0x61, 0x64, 0x6c, 0x69, 0x6e, 0x65, 0x12, 0x1a, 0x0a, 0x08,
 	0x6d, 0x65, 0x74, 0x61, 0x64, 0x61, 0x74, 0x61, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x08,
-	0x6d, 0x65, 0x74, 0x61, 0x64, 0x61, 0x74, 0x61, 0x42, 0x26, 0x5a, 0x24, 0x67, 0x69, 0x74, 0x68,
-	0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x63, 0x6f, 0x6e, 0x74, 0x61, 0x69, 0x6e, 0x65, 0x72,
-	0x64, 0x2f, 0x74, 0x74, 0x72, 0x70, 0x63, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x61, 0x6c,
-	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x6d, 0x65, 0x74, 0x61, 0x64, 0x61, 0x74, 0x61, 0x22, 0x31, 0x0a, 0x0b, 0x45, 0x63, 0x68, 0x6f,
+	0x50, 0x61, 0x79, 0x6c, 0x6f, 0x61, 0x64, 0x12, 0x10, 0x0a, 0x03, 0x73, 0x65, 0x71, 0x18, 0x01,
+	0x20, 0x01, 0x28, 0x03, 0x52, 0x03, 0x73, 0x65, 0x71, 0x12, 0x10, 0x0a, 0x03, 0x6d, 0x73, 0x67,
+	0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x6d, 0x73, 0x67, 0x42, 0x26, 0x5a, 0x24, 0x67,
+	0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x63, 0x6f, 0x6e, 0x74, 0x61, 0x69,
+	0x6e, 0x65, 0x72, 0x64, 0x2f, 0x74, 0x74, 0x72, 0x70, 0x63, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72,
+	0x6e, 0x61, 0x6c, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -112,9 +170,10 @@ func file_github_com_containerd_ttrpc_test_proto_rawDescGZIP() []byte {
 	return file_github_com_containerd_ttrpc_test_proto_rawDescData
 }
 
-var file_github_com_containerd_ttrpc_test_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+var file_github_com_containerd_ttrpc_test_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
 var file_github_com_containerd_ttrpc_test_proto_goTypes = []interface{}{
 	(*TestPayload)(nil), // 0: ttrpc.TestPayload
+	(*EchoPayload)(nil), // 1: ttrpc.EchoPayload
 }
 var file_github_com_containerd_ttrpc_test_proto_depIdxs = []int32{
 	0, // [0:0] is the sub-list for method output_type
@@ -142,6 +201,18 @@ func file_github_com_containerd_ttrpc_test_proto_init() {
 				return nil
 			}
 		}
+		file_github_com_containerd_ttrpc_test_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*EchoPayload); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -149,7 +220,7 @@ func file_github_com_containerd_ttrpc_test_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_github_com_containerd_ttrpc_test_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   1,
+			NumMessages:   2,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

stream_test.go

@@ -0,0 +1,118 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package ttrpc
+
+import (
+	"context"
+	"io"
+	"testing"
+
+	"github.com/containerd/ttrpc/internal"
+)
+
+func TestStreamClient(t *testing.T) {
+	var (
+		ctx             = context.Background()
+		server          = mustServer(t)(NewServer())
+		addr, listener  = newTestListener(t)
+		client, cleanup = newTestClient(t, addr)
+		serviceName     = "streamService"
+	)
+
+	defer listener.Close()
+	defer cleanup()
+
+	desc := &ServiceDesc{
+		Methods: map[string]Method{
+			"Echo": func(ctx context.Context, unmarshal func(interface{}) error) (interface{}, error) {
+				var req internal.EchoPayload
+				if err := unmarshal(&req); err != nil {
+					return nil, err
+				}
+				req.Seq++
+				return &req, nil
+			},
+		},
+		Streams: map[string]Stream{
+			"EchoStream": {
+				Handler: func(ctx context.Context, ss StreamServer) (interface{}, error) {
+					for {
+						var req internal.EchoPayload
+						if err := ss.RecvMsg(&req); err != nil {
+							if err == io.EOF {
+								err = nil
+							}
+							return nil, err
+						}
+						req.Seq++
+						if err := ss.SendMsg(&req); err != nil {
+							return nil, err
+						}
+					}
+
+				},
+				StreamingClient: true,
+				StreamingServer: true,
+			},
+		},
+	}
+	server.RegisterService(serviceName, desc)
+
+	go server.Serve(ctx, listener)
+	defer server.Shutdown(ctx)
+
+	//func (c *Client) NewStream(ctx context.Context, desc *StreamDesc, service, method string) (ClientStream, error) {
+	var req, resp internal.EchoPayload
+	if err := client.Call(ctx, serviceName, "Echo", &req, &resp); err != nil {
+		t.Fatal(err)
+	}
+
+	stream, err := client.NewStream(ctx, &StreamDesc{true, true}, serviceName, "EchoStream", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for i := 1; i <= 100; i++ {
+		req := internal.EchoPayload{
+			Seq: int64(i),
+			Msg: "should be returned",
+		}
+		if err := stream.SendMsg(&req); err != nil {
+			t.Fatalf("%d: %v", i, err)
+		}
+		var resp internal.EchoPayload
+		if err := stream.RecvMsg(&resp); err != nil {
+			t.Fatalf("%d: %v", i, err)
+		}
+		if resp.Seq != int64(i)+1 {
+			t.Fatalf("%d: unexpected sequence value: %d, expected %d", i, resp.Seq, i+1)
+		}
+		if resp.Msg != req.Msg {
+			t.Fatalf("%d: unexpected message: %q, expected %q", i, resp.Msg, req.Msg)
+		}
+	}
+	if err := stream.CloseSend(); err != nil {
+		t.Fatal(err)
+	}
+
+	err = stream.RecvMsg(&resp)
+	if err == nil {
+		t.Fatal("expected io.EOF after close send")
+	}
+	if err != io.EOF {
+		t.Fatalf("expected io.EOF after close send, got %v", err)
+	}
+}

test.proto

@@ -9,3 +9,8 @@ message TestPayload {
 	int64 deadline = 2;
 	string metadata = 3;
 }
+
+message EchoPayload {
+	int64 seq = 1;
+	string msg = 2;
+}