reflection/serverreflection_test.go - third_party/grpc/grpc-go - Git at Google

 /*
  *
  * Copyright 2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
  * copyright notice, this list of conditions and the following disclaimer
  * in the documentation and/or other materials provided with the
  * distribution.
  *     * Neither the name of Google Inc. nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */

 package reflection

 import (
 	"fmt"
 	"net"
 	"reflect"
 	"sort"
 	"testing"

 	"github.com/golang/protobuf/proto"
 	dpb "github.com/golang/protobuf/protoc-gen-go/descriptor"
 	"golang.org/x/net/context"
 	"google.golang.org/grpc"
 	rpb "google.golang.org/grpc/reflection/grpc_reflection_v1alpha"
 	pb "google.golang.org/grpc/reflection/grpc_testing"
 )

 var (
 	s = &serverReflectionServer{}
 	// fileDescriptor of each test proto file.
 	fdTest      *dpb.FileDescriptorProto
 	fdProto2    *dpb.FileDescriptorProto
 	fdProto2Ext *dpb.FileDescriptorProto
 	// fileDescriptor marshalled.
 	fdTestByte      []byte
 	fdProto2Byte    []byte
 	fdProto2ExtByte []byte
 )

 func loadFileDesc(filename string) (*dpb.FileDescriptorProto, []byte) {
 	enc := proto.FileDescriptor(filename)
 	if enc == nil {
 		panic(fmt.Sprintf("failed to find fd for file: %v", filename))
 	}
 	fd, err := s.decodeFileDesc(enc)
 	if err != nil {
 		panic(fmt.Sprintf("failed to decode enc: %v", err))
 	}
 	b, err := proto.Marshal(fd)
 	if err != nil {
 		panic(fmt.Sprintf("failed to marshal fd: %v", err))
 	}
 	return fd, b
 }

 func init() {
 	fdTest, fdTestByte = loadFileDesc("test.proto")
 	fdProto2, fdProto2Byte = loadFileDesc("proto2.proto")
 	fdProto2Ext, fdProto2ExtByte = loadFileDesc("proto2_ext.proto")
 }

 func TestFileDescForType(t *testing.T) {
 	for _, test := range []struct {
 		st     reflect.Type
 		wantFd *dpb.FileDescriptorProto
 	}{
 		{reflect.TypeOf(pb.SearchResponse_Result{}), fdTest},
 		{reflect.TypeOf(pb.ToBeExtened{}), fdProto2},
 	} {
 		fd, err := s.fileDescForType(test.st)
 		if err != nil || !reflect.DeepEqual(fd, test.wantFd) {
 			t.Errorf("fileDescForType(%q) = %q, %v, want %q, <nil>", test.st, fd, err, test.wantFd)
 		}
 	}
 }

 func TestTypeForName(t *testing.T) {
 	for _, test := range []struct {
 		name string
 		want reflect.Type
 	}{
 		{"grpc.testing.SearchResponse", reflect.TypeOf(pb.SearchResponse{})},
 	} {
 		r, err := s.typeForName(test.name)
 		if err != nil || r != test.want {
 			t.Errorf("typeForName(%q) = %q, %v, want %q, <nil>", test.name, r, err, test.want)
 		}
 	}
 }

 func TestTypeForNameNotFound(t *testing.T) {
 	for _, test := range []string{
 		"grpc.testing.not_exiting",
 	} {
 		_, err := s.typeForName(test)
 		if err == nil {
 			t.Errorf("typeForName(%q) = _, %v, want _, <non-nil>", test, err)
 		}
 	}
 }

 func TestFileDescContainingExtension(t *testing.T) {
 	for _, test := range []struct {
 		st     reflect.Type
 		extNum int32
 		want   *dpb.FileDescriptorProto
 	}{
 		{reflect.TypeOf(pb.ToBeExtened{}), 17, fdProto2Ext},
 	} {
 		fd, err := s.fileDescContainingExtension(test.st, test.extNum)
 		if err != nil || !reflect.DeepEqual(fd, test.want) {
 			t.Errorf("fileDescContainingExtension(%q) = %q, %v, want %q, <nil>", test.st, fd, err, test.want)
 		}
 	}
 }

 // intArray is used to sort []int32
 type intArray []int32

 func (s intArray) Len() int           { return len(s) }
 func (s intArray) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
 func (s intArray) Less(i, j int) bool { return s[i] < s[j] }

 func TestAllExtensionNumbersForType(t *testing.T) {
 	for _, test := range []struct {
 		st   reflect.Type
 		want []int32
 	}{
 		{reflect.TypeOf(pb.ToBeExtened{}), []int32{13, 17}},
 	} {
 		r, err := s.allExtensionNumbersForType(test.st)
 		sort.Sort(intArray(r))
 		if err != nil || !reflect.DeepEqual(r, test.want) {
 			t.Errorf("allExtensionNumbersForType(%q) = %v, %v, want %v, <nil>", test.st, r, err, test.want)
 		}
 	}
 }

 // Do end2end tests.

 type server struct{}

 func (s *server) Search(ctx context.Context, in *pb.SearchRequest) (*pb.SearchResponse, error) {
 	return &pb.SearchResponse{}, nil
 }

 func (s *server) StreamingSearch(stream pb.SearchService_StreamingSearchServer) error {
 	return nil
 }

 func TestReflectionEnd2end(t *testing.T) {
 	// Start server.
 	lis, err := net.Listen("tcp", "localhost:0")
 	if err != nil {
 		t.Fatalf("failed to listen: %v", err)
 	}
 	s := grpc.NewServer()
 	pb.RegisterSearchServiceServer(s, &server{})
 	// Register reflection service on s.
 	Register(s)
 	go s.Serve(lis)

 	// Create client.
 	conn, err := grpc.Dial(lis.Addr().String(), grpc.WithInsecure())
 	if err != nil {
 		t.Fatalf("cannot connect to server: %v", err)
 	}
 	defer conn.Close()

 	c := rpb.NewServerReflectionClient(conn)
 	stream, err := c.ServerReflectionInfo(context.Background())
 	if err != nil {
 		t.Fatalf("cannot get ServerReflectionInfo: %v", err)
 	}

 	testFileByFilename(t, stream)
 	testFileByFilenameError(t, stream)
 	testFileContainingSymbol(t, stream)
 	testFileContainingSymbolError(t, stream)
 	testFileContainingExtension(t, stream)
 	testFileContainingExtensionError(t, stream)
 	testAllExtensionNumbersOfType(t, stream)
 	testAllExtensionNumbersOfTypeError(t, stream)
 	testListServices(t, stream)

 	s.Stop()
 }

 func testFileByFilename(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
 	for _, test := range []struct {
 		filename string
 		want     []byte
 	}{
 		{"test.proto", fdTestByte},
 		{"proto2.proto", fdProto2Byte},
 		{"proto2_ext.proto", fdProto2ExtByte},
 	} {
 		if err := stream.Send(&rpb.ServerReflectionRequest{
 			MessageRequest: &rpb.ServerReflectionRequest_FileByFilename{
 				FileByFilename: test.filename,
 			},
 		}); err != nil {
 			t.Fatalf("failed to send request: %v", err)
 		}
 		r, err := stream.Recv()
 		if err != nil {
 			// io.EOF is not ok.
 			t.Fatalf("failed to recv response: %v", err)
 		}

 		switch r.MessageResponse.(type) {
 		case *rpb.ServerReflectionResponse_FileDescriptorResponse:
 			if !reflect.DeepEqual(r.GetFileDescriptorResponse().FileDescriptorProto[0], test.want) {
 				t.Errorf("FileByFilename(%v)\nreceived: %q,\nwant: %q", test.filename, r.GetFileDescriptorResponse().FileDescriptorProto[0], test.want)
 			}
 		default:
 			t.Errorf("FileByFilename(%v) = %v, want type <ServerReflectionResponse_FileDescriptorResponse>", test.filename, r.MessageResponse)
 		}
 	}
 }

 func testFileByFilenameError(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
 	for _, test := range []string{
 		"test.poto",
 		"proo2.proto",
 		"proto2_et.proto",
 	} {
 		if err := stream.Send(&rpb.ServerReflectionRequest{
 			MessageRequest: &rpb.ServerReflectionRequest_FileByFilename{
 				FileByFilename: test,
 			},
 		}); err != nil {
 			t.Fatalf("failed to send request: %v", err)
 		}
 		r, err := stream.Recv()
 		if err != nil {
 			// io.EOF is not ok.
 			t.Fatalf("failed to recv response: %v", err)
 		}

 		switch r.MessageResponse.(type) {
 		case *rpb.ServerReflectionResponse_ErrorResponse:
 		default:
 			t.Errorf("FileByFilename(%v) = %v, want type <ServerReflectionResponse_ErrorResponse>", test, r.MessageResponse)
 		}
 	}
 }

 func testFileContainingSymbol(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
 	for _, test := range []struct {
 		symbol string
 		want   []byte
 	}{
 		{"grpc.testing.SearchService", fdTestByte},
 		{"grpc.testing.SearchService.Search", fdTestByte},
 		{"grpc.testing.SearchService.StreamingSearch", fdTestByte},
 		{"grpc.testing.SearchResponse", fdTestByte},
 		{"grpc.testing.ToBeExtened", fdProto2Byte},
 	} {
 		if err := stream.Send(&rpb.ServerReflectionRequest{
 			MessageRequest: &rpb.ServerReflectionRequest_FileContainingSymbol{
 				FileContainingSymbol: test.symbol,
 			},
 		}); err != nil {
 			t.Fatalf("failed to send request: %v", err)
 		}
 		r, err := stream.Recv()
 		if err != nil {
 			// io.EOF is not ok.
 			t.Fatalf("failed to recv response: %v", err)
 		}

 		switch r.MessageResponse.(type) {
 		case *rpb.ServerReflectionResponse_FileDescriptorResponse:
 			if !reflect.DeepEqual(r.GetFileDescriptorResponse().FileDescriptorProto[0], test.want) {
 				t.Errorf("FileContainingSymbol(%v)\nreceived: %q,\nwant: %q", test.symbol, r.GetFileDescriptorResponse().FileDescriptorProto[0], test.want)
 			}
 		default:
 			t.Errorf("FileContainingSymbol(%v) = %v, want type <ServerReflectionResponse_FileDescriptorResponse>", test.symbol, r.MessageResponse)
 		}
 	}
 }

 func testFileContainingSymbolError(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
 	for _, test := range []string{
 		"grpc.testing.SerchService",
 		"grpc.testing.SearchService.SearchE",
 		"grpc.tesing.SearchResponse",
 		"gpc.testing.ToBeExtened",
 	} {
 		if err := stream.Send(&rpb.ServerReflectionRequest{
 			MessageRequest: &rpb.ServerReflectionRequest_FileContainingSymbol{
 				FileContainingSymbol: test,
 			},
 		}); err != nil {
 			t.Fatalf("failed to send request: %v", err)
 		}
 		r, err := stream.Recv()
 		if err != nil {
 			// io.EOF is not ok.
 			t.Fatalf("failed to recv response: %v", err)
 		}

 		switch r.MessageResponse.(type) {
 		case *rpb.ServerReflectionResponse_ErrorResponse:
 		default:
 			t.Errorf("FileContainingSymbol(%v) = %v, want type <ServerReflectionResponse_ErrorResponse>", test, r.MessageResponse)
 		}
 	}
 }

 func testFileContainingExtension(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
 	for _, test := range []struct {
 		typeName string
 		extNum   int32
 		want     []byte
 	}{
 		{"grpc.testing.ToBeExtened", 17, fdProto2ExtByte},
 	} {
 		if err := stream.Send(&rpb.ServerReflectionRequest{
 			MessageRequest: &rpb.ServerReflectionRequest_FileContainingExtension{
 				FileContainingExtension: &rpb.ExtensionRequest{
 					ContainingType:  test.typeName,
 					ExtensionNumber: test.extNum,
 				},
 			},
 		}); err != nil {
 			t.Fatalf("failed to send request: %v", err)
 		}
 		r, err := stream.Recv()
 		if err != nil {
 			// io.EOF is not ok.
 			t.Fatalf("failed to recv response: %v", err)
 		}

 		switch r.MessageResponse.(type) {
 		case *rpb.ServerReflectionResponse_FileDescriptorResponse:
 			if !reflect.DeepEqual(r.GetFileDescriptorResponse().FileDescriptorProto[0], test.want) {
 				t.Errorf("FileContainingExtension(%v, %v)\nreceived: %q,\nwant: %q", test.typeName, test.extNum, r.GetFileDescriptorResponse().FileDescriptorProto[0], test.want)
 			}
 		default:
 			t.Errorf("FileContainingExtension(%v, %v) = %v, want type <ServerReflectionResponse_FileDescriptorResponse>", test.typeName, test.extNum, r.MessageResponse)
 		}
 	}
 }

 func testFileContainingExtensionError(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
 	for _, test := range []struct {
 		typeName string
 		extNum   int32
 	}{
 		{"grpc.testing.ToBExtened", 17},
 		{"grpc.testing.ToBeExtened", 15},
 	} {
 		if err := stream.Send(&rpb.ServerReflectionRequest{
 			MessageRequest: &rpb.ServerReflectionRequest_FileContainingExtension{
 				FileContainingExtension: &rpb.ExtensionRequest{
 					ContainingType:  test.typeName,
 					ExtensionNumber: test.extNum,
 				},
 			},
 		}); err != nil {
 			t.Fatalf("failed to send request: %v", err)
 		}
 		r, err := stream.Recv()
 		if err != nil {
 			// io.EOF is not ok.
 			t.Fatalf("failed to recv response: %v", err)
 		}

 		switch r.MessageResponse.(type) {
 		case *rpb.ServerReflectionResponse_ErrorResponse:
 		default:
 			t.Errorf("FileContainingExtension(%v, %v) = %v, want type <ServerReflectionResponse_FileDescriptorResponse>", test.typeName, test.extNum, r.MessageResponse)
 		}
 	}
 }

 func testAllExtensionNumbersOfType(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
 	for _, test := range []struct {
 		typeName string
 		want     []int32
 	}{
 		{"grpc.testing.ToBeExtened", []int32{13, 17}},
 	} {
 		if err := stream.Send(&rpb.ServerReflectionRequest{
 			MessageRequest: &rpb.ServerReflectionRequest_AllExtensionNumbersOfType{
 				AllExtensionNumbersOfType: test.typeName,
 			},
 		}); err != nil {
 			t.Fatalf("failed to send request: %v", err)
 		}
 		r, err := stream.Recv()
 		if err != nil {
 			// io.EOF is not ok.
 			t.Fatalf("failed to recv response: %v", err)
 		}

 		switch r.MessageResponse.(type) {
 		case *rpb.ServerReflectionResponse_AllExtensionNumbersResponse:
 			extNum := r.GetAllExtensionNumbersResponse().ExtensionNumber
 			sort.Sort(intArray(extNum))
 			if r.GetAllExtensionNumbersResponse().BaseTypeName != test.typeName ||
 				!reflect.DeepEqual(extNum, test.want) {
 				t.Errorf("AllExtensionNumbersOfType(%v)\nreceived: %v,\nwant: {%q %v}", r.GetAllExtensionNumbersResponse(), test.typeName, test.typeName, test.want)
 			}
 		default:
 			t.Errorf("AllExtensionNumbersOfType(%v) = %v, want type <ServerReflectionResponse_AllExtensionNumbersResponse>", test.typeName, r.MessageResponse)
 		}
 	}
 }

 func testAllExtensionNumbersOfTypeError(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
 	for _, test := range []string{
 		"grpc.testing.ToBeExtenedE",
 	} {
 		if err := stream.Send(&rpb.ServerReflectionRequest{
 			MessageRequest: &rpb.ServerReflectionRequest_AllExtensionNumbersOfType{
 				AllExtensionNumbersOfType: test,
 			},
 		}); err != nil {
 			t.Fatalf("failed to send request: %v", err)
 		}
 		r, err := stream.Recv()
 		if err != nil {
 			// io.EOF is not ok.
 			t.Fatalf("failed to recv response: %v", err)
 		}

 		switch r.MessageResponse.(type) {
 		case *rpb.ServerReflectionResponse_ErrorResponse:
 		default:
 			t.Errorf("AllExtensionNumbersOfType(%v) = %v, want type <ServerReflectionResponse_ErrorResponse>", test, r.MessageResponse)
 		}
 	}
 }

 func testListServices(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
 	if err := stream.Send(&rpb.ServerReflectionRequest{
 		MessageRequest: &rpb.ServerReflectionRequest_ListServices{},
 	}); err != nil {
 		t.Fatalf("failed to send request: %v", err)
 	}
 	r, err := stream.Recv()
 	if err != nil {
 		// io.EOF is not ok.
 		t.Fatalf("failed to recv response: %v", err)
 	}

 	switch r.MessageResponse.(type) {
 	case *rpb.ServerReflectionResponse_ListServicesResponse:
 		services := r.GetListServicesResponse().Service
 		want := []string{"grpc.testing.SearchService", "grpc.reflection.v1alpha.ServerReflection"}
 		// Compare service names in response with want.
 		if len(services) != len(want) {
 			t.Errorf("= %v, want service names: %v", services, want)
 		}
 		m := make(map[string]int)
 		for _, e := range services {
 			m[e.Name]++
 		}
 		for _, e := range want {
 			if m[e] > 0 {
 				m[e]--
 				continue
 			}
 			t.Errorf("ListService\nreceived: %v,\nwant: %q", services, want)
 		}
 	default:
 		t.Errorf("ListServices = %v, want type <ServerReflectionResponse_ListServicesResponse>", r.MessageResponse)
 	}
 }
	/*
	*
	* Copyright 2016, Google Inc.
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are
	* met:
	*
	* * Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* * Redistributions in binary form must reproduce the above
	* copyright notice, this list of conditions and the following disclaimer
	* in the documentation and/or other materials provided with the
	* distribution.
	* * Neither the name of Google Inc. nor the names of its
	* contributors may be used to endorse or promote products derived from
	* this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*
	*/

	package reflection

	import (
	"fmt"
	"net"
	"reflect"
	"sort"
	"testing"

	"github.com/golang/protobuf/proto"
	dpb "github.com/golang/protobuf/protoc-gen-go/descriptor"
	"golang.org/x/net/context"
	"google.golang.org/grpc"
	rpb "google.golang.org/grpc/reflection/grpc_reflection_v1alpha"
	pb "google.golang.org/grpc/reflection/grpc_testing"
	)

	var (
	s = &serverReflectionServer{}
	// fileDescriptor of each test proto file.
	fdTest *dpb.FileDescriptorProto
	fdProto2 *dpb.FileDescriptorProto
	fdProto2Ext *dpb.FileDescriptorProto
	// fileDescriptor marshalled.
	fdTestByte []byte
	fdProto2Byte []byte
	fdProto2ExtByte []byte
	)

	func loadFileDesc(filename string) (*dpb.FileDescriptorProto, []byte) {
	enc := proto.FileDescriptor(filename)
	if enc == nil {
	panic(fmt.Sprintf("failed to find fd for file: %v", filename))
	}
	fd, err := s.decodeFileDesc(enc)
	if err != nil {
	panic(fmt.Sprintf("failed to decode enc: %v", err))
	}
	b, err := proto.Marshal(fd)
	if err != nil {
	panic(fmt.Sprintf("failed to marshal fd: %v", err))
	}
	return fd, b
	}

	func init() {
	fdTest, fdTestByte = loadFileDesc("test.proto")
	fdProto2, fdProto2Byte = loadFileDesc("proto2.proto")
	fdProto2Ext, fdProto2ExtByte = loadFileDesc("proto2_ext.proto")
	}

	func TestFileDescForType(t *testing.T) {
	for _, test := range []struct {
	st reflect.Type
	wantFd *dpb.FileDescriptorProto
	}{
	{reflect.TypeOf(pb.SearchResponse_Result{}), fdTest},
	{reflect.TypeOf(pb.ToBeExtened{}), fdProto2},
	} {
	fd, err := s.fileDescForType(test.st)
	if err != nil \|\| !reflect.DeepEqual(fd, test.wantFd) {
	t.Errorf("fileDescForType(%q) = %q, %v, want %q, <nil>", test.st, fd, err, test.wantFd)
	}
	}
	}

	func TestTypeForName(t *testing.T) {
	for _, test := range []struct {
	name string
	want reflect.Type
	}{
	{"grpc.testing.SearchResponse", reflect.TypeOf(pb.SearchResponse{})},
	} {
	r, err := s.typeForName(test.name)
	if err != nil \|\| r != test.want {
	t.Errorf("typeForName(%q) = %q, %v, want %q, <nil>", test.name, r, err, test.want)
	}
	}
	}

	func TestTypeForNameNotFound(t *testing.T) {
	for _, test := range []string{
	"grpc.testing.not_exiting",
	} {
	_, err := s.typeForName(test)
	if err == nil {
	t.Errorf("typeForName(%q) = _, %v, want _, <non-nil>", test, err)
	}
	}
	}

	func TestFileDescContainingExtension(t *testing.T) {
	for _, test := range []struct {
	st reflect.Type
	extNum int32
	want *dpb.FileDescriptorProto
	}{
	{reflect.TypeOf(pb.ToBeExtened{}), 17, fdProto2Ext},
	} {
	fd, err := s.fileDescContainingExtension(test.st, test.extNum)
	if err != nil \|\| !reflect.DeepEqual(fd, test.want) {
	t.Errorf("fileDescContainingExtension(%q) = %q, %v, want %q, <nil>", test.st, fd, err, test.want)
	}
	}
	}

	// intArray is used to sort []int32
	type intArray []int32

	func (s intArray) Len() int { return len(s) }
	func (s intArray) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
	func (s intArray) Less(i, j int) bool { return s[i] < s[j] }

	func TestAllExtensionNumbersForType(t *testing.T) {
	for _, test := range []struct {
	st reflect.Type
	want []int32
	}{
	{reflect.TypeOf(pb.ToBeExtened{}), []int32{13, 17}},
	} {
	r, err := s.allExtensionNumbersForType(test.st)
	sort.Sort(intArray(r))
	if err != nil \|\| !reflect.DeepEqual(r, test.want) {
	t.Errorf("allExtensionNumbersForType(%q) = %v, %v, want %v, <nil>", test.st, r, err, test.want)
	}
	}
	}

	// Do end2end tests.

	type server struct{}

	func (s server) Search(ctx context.Context, in pb.SearchRequest) (*pb.SearchResponse, error) {
	return &pb.SearchResponse{}, nil
	}

	func (s *server) StreamingSearch(stream pb.SearchService_StreamingSearchServer) error {
	return nil
	}

	func TestReflectionEnd2end(t *testing.T) {
	// Start server.
	lis, err := net.Listen("tcp", "localhost:0")
	if err != nil {
	t.Fatalf("failed to listen: %v", err)
	}
	s := grpc.NewServer()
	pb.RegisterSearchServiceServer(s, &server{})
	// Register reflection service on s.
	Register(s)
	go s.Serve(lis)

	// Create client.
	conn, err := grpc.Dial(lis.Addr().String(), grpc.WithInsecure())
	if err != nil {
	t.Fatalf("cannot connect to server: %v", err)
	}
	defer conn.Close()

	c := rpb.NewServerReflectionClient(conn)
	stream, err := c.ServerReflectionInfo(context.Background())
	if err != nil {
	t.Fatalf("cannot get ServerReflectionInfo: %v", err)
	}

	testFileByFilename(t, stream)
	testFileByFilenameError(t, stream)
	testFileContainingSymbol(t, stream)
	testFileContainingSymbolError(t, stream)
	testFileContainingExtension(t, stream)
	testFileContainingExtensionError(t, stream)
	testAllExtensionNumbersOfType(t, stream)
	testAllExtensionNumbersOfTypeError(t, stream)
	testListServices(t, stream)

	s.Stop()
	}

	func testFileByFilename(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
	for _, test := range []struct {
	filename string
	want []byte
	}{
	{"test.proto", fdTestByte},
	{"proto2.proto", fdProto2Byte},
	{"proto2_ext.proto", fdProto2ExtByte},
	} {
	if err := stream.Send(&rpb.ServerReflectionRequest{
	MessageRequest: &rpb.ServerReflectionRequest_FileByFilename{
	FileByFilename: test.filename,
	},
	}); err != nil {
	t.Fatalf("failed to send request: %v", err)
	}
	r, err := stream.Recv()
	if err != nil {
	// io.EOF is not ok.
	t.Fatalf("failed to recv response: %v", err)
	}

	switch r.MessageResponse.(type) {
	case *rpb.ServerReflectionResponse_FileDescriptorResponse:
	if !reflect.DeepEqual(r.GetFileDescriptorResponse().FileDescriptorProto[0], test.want) {
	t.Errorf("FileByFilename(%v)\nreceived: %q,\nwant: %q", test.filename, r.GetFileDescriptorResponse().FileDescriptorProto[0], test.want)
	}
	default:
	t.Errorf("FileByFilename(%v) = %v, want type <ServerReflectionResponse_FileDescriptorResponse>", test.filename, r.MessageResponse)
	}
	}
	}

	func testFileByFilenameError(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
	for _, test := range []string{
	"test.poto",
	"proo2.proto",
	"proto2_et.proto",
	} {
	if err := stream.Send(&rpb.ServerReflectionRequest{
	MessageRequest: &rpb.ServerReflectionRequest_FileByFilename{
	FileByFilename: test,
	},
	}); err != nil {
	t.Fatalf("failed to send request: %v", err)
	}
	r, err := stream.Recv()
	if err != nil {
	// io.EOF is not ok.
	t.Fatalf("failed to recv response: %v", err)
	}

	switch r.MessageResponse.(type) {
	case *rpb.ServerReflectionResponse_ErrorResponse:
	default:
	t.Errorf("FileByFilename(%v) = %v, want type <ServerReflectionResponse_ErrorResponse>", test, r.MessageResponse)
	}
	}
	}

	func testFileContainingSymbol(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
	for _, test := range []struct {
	symbol string
	want []byte
	}{
	{"grpc.testing.SearchService", fdTestByte},
	{"grpc.testing.SearchService.Search", fdTestByte},
	{"grpc.testing.SearchService.StreamingSearch", fdTestByte},
	{"grpc.testing.SearchResponse", fdTestByte},
	{"grpc.testing.ToBeExtened", fdProto2Byte},
	} {
	if err := stream.Send(&rpb.ServerReflectionRequest{
	MessageRequest: &rpb.ServerReflectionRequest_FileContainingSymbol{
	FileContainingSymbol: test.symbol,
	},
	}); err != nil {
	t.Fatalf("failed to send request: %v", err)
	}
	r, err := stream.Recv()
	if err != nil {
	// io.EOF is not ok.
	t.Fatalf("failed to recv response: %v", err)
	}

	switch r.MessageResponse.(type) {
	case *rpb.ServerReflectionResponse_FileDescriptorResponse:
	if !reflect.DeepEqual(r.GetFileDescriptorResponse().FileDescriptorProto[0], test.want) {
	t.Errorf("FileContainingSymbol(%v)\nreceived: %q,\nwant: %q", test.symbol, r.GetFileDescriptorResponse().FileDescriptorProto[0], test.want)
	}
	default:
	t.Errorf("FileContainingSymbol(%v) = %v, want type <ServerReflectionResponse_FileDescriptorResponse>", test.symbol, r.MessageResponse)
	}
	}
	}

	func testFileContainingSymbolError(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
	for _, test := range []string{
	"grpc.testing.SerchService",
	"grpc.testing.SearchService.SearchE",
	"grpc.tesing.SearchResponse",
	"gpc.testing.ToBeExtened",
	} {
	if err := stream.Send(&rpb.ServerReflectionRequest{
	MessageRequest: &rpb.ServerReflectionRequest_FileContainingSymbol{
	FileContainingSymbol: test,
	},
	}); err != nil {
	t.Fatalf("failed to send request: %v", err)
	}
	r, err := stream.Recv()
	if err != nil {
	// io.EOF is not ok.
	t.Fatalf("failed to recv response: %v", err)
	}

	switch r.MessageResponse.(type) {
	case *rpb.ServerReflectionResponse_ErrorResponse:
	default:
	t.Errorf("FileContainingSymbol(%v) = %v, want type <ServerReflectionResponse_ErrorResponse>", test, r.MessageResponse)
	}
	}
	}

	func testFileContainingExtension(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
	for _, test := range []struct {
	typeName string
	extNum int32
	want []byte
	}{
	{"grpc.testing.ToBeExtened", 17, fdProto2ExtByte},
	} {
	if err := stream.Send(&rpb.ServerReflectionRequest{
	MessageRequest: &rpb.ServerReflectionRequest_FileContainingExtension{
	FileContainingExtension: &rpb.ExtensionRequest{
	ContainingType: test.typeName,
	ExtensionNumber: test.extNum,
	},
	},
	}); err != nil {
	t.Fatalf("failed to send request: %v", err)
	}
	r, err := stream.Recv()
	if err != nil {
	// io.EOF is not ok.
	t.Fatalf("failed to recv response: %v", err)
	}

	switch r.MessageResponse.(type) {
	case *rpb.ServerReflectionResponse_FileDescriptorResponse:
	if !reflect.DeepEqual(r.GetFileDescriptorResponse().FileDescriptorProto[0], test.want) {
	t.Errorf("FileContainingExtension(%v, %v)\nreceived: %q,\nwant: %q", test.typeName, test.extNum, r.GetFileDescriptorResponse().FileDescriptorProto[0], test.want)
	}
	default:
	t.Errorf("FileContainingExtension(%v, %v) = %v, want type <ServerReflectionResponse_FileDescriptorResponse>", test.typeName, test.extNum, r.MessageResponse)
	}
	}
	}

	func testFileContainingExtensionError(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
	for _, test := range []struct {
	typeName string
	extNum int32
	}{
	{"grpc.testing.ToBExtened", 17},
	{"grpc.testing.ToBeExtened", 15},
	} {
	if err := stream.Send(&rpb.ServerReflectionRequest{
	MessageRequest: &rpb.ServerReflectionRequest_FileContainingExtension{
	FileContainingExtension: &rpb.ExtensionRequest{
	ContainingType: test.typeName,
	ExtensionNumber: test.extNum,
	},
	},
	}); err != nil {
	t.Fatalf("failed to send request: %v", err)
	}
	r, err := stream.Recv()
	if err != nil {
	// io.EOF is not ok.
	t.Fatalf("failed to recv response: %v", err)
	}

	switch r.MessageResponse.(type) {
	case *rpb.ServerReflectionResponse_ErrorResponse:
	default:
	t.Errorf("FileContainingExtension(%v, %v) = %v, want type <ServerReflectionResponse_FileDescriptorResponse>", test.typeName, test.extNum, r.MessageResponse)
	}
	}
	}

	func testAllExtensionNumbersOfType(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
	for _, test := range []struct {
	typeName string
	want []int32
	}{
	{"grpc.testing.ToBeExtened", []int32{13, 17}},
	} {
	if err := stream.Send(&rpb.ServerReflectionRequest{
	MessageRequest: &rpb.ServerReflectionRequest_AllExtensionNumbersOfType{
	AllExtensionNumbersOfType: test.typeName,
	},
	}); err != nil {
	t.Fatalf("failed to send request: %v", err)
	}
	r, err := stream.Recv()
	if err != nil {
	// io.EOF is not ok.
	t.Fatalf("failed to recv response: %v", err)
	}

	switch r.MessageResponse.(type) {
	case *rpb.ServerReflectionResponse_AllExtensionNumbersResponse:
	extNum := r.GetAllExtensionNumbersResponse().ExtensionNumber
	sort.Sort(intArray(extNum))
	if r.GetAllExtensionNumbersResponse().BaseTypeName != test.typeName \|\|
	!reflect.DeepEqual(extNum, test.want) {
	t.Errorf("AllExtensionNumbersOfType(%v)\nreceived: %v,\nwant: {%q %v}", r.GetAllExtensionNumbersResponse(), test.typeName, test.typeName, test.want)
	}
	default:
	t.Errorf("AllExtensionNumbersOfType(%v) = %v, want type <ServerReflectionResponse_AllExtensionNumbersResponse>", test.typeName, r.MessageResponse)
	}
	}
	}

	func testAllExtensionNumbersOfTypeError(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
	for _, test := range []string{
	"grpc.testing.ToBeExtenedE",
	} {
	if err := stream.Send(&rpb.ServerReflectionRequest{
	MessageRequest: &rpb.ServerReflectionRequest_AllExtensionNumbersOfType{
	AllExtensionNumbersOfType: test,
	},
	}); err != nil {
	t.Fatalf("failed to send request: %v", err)
	}
	r, err := stream.Recv()
	if err != nil {
	// io.EOF is not ok.
	t.Fatalf("failed to recv response: %v", err)
	}

	switch r.MessageResponse.(type) {
	case *rpb.ServerReflectionResponse_ErrorResponse:
	default:
	t.Errorf("AllExtensionNumbersOfType(%v) = %v, want type <ServerReflectionResponse_ErrorResponse>", test, r.MessageResponse)
	}
	}
	}

	func testListServices(t *testing.T, stream rpb.ServerReflection_ServerReflectionInfoClient) {
	if err := stream.Send(&rpb.ServerReflectionRequest{
	MessageRequest: &rpb.ServerReflectionRequest_ListServices{},
	}); err != nil {
	t.Fatalf("failed to send request: %v", err)
	}
	r, err := stream.Recv()
	if err != nil {
	// io.EOF is not ok.
	t.Fatalf("failed to recv response: %v", err)
	}

	switch r.MessageResponse.(type) {
	case *rpb.ServerReflectionResponse_ListServicesResponse:
	services := r.GetListServicesResponse().Service
	want := []string{"grpc.testing.SearchService", "grpc.reflection.v1alpha.ServerReflection"}
	// Compare service names in response with want.
	if len(services) != len(want) {
	t.Errorf("= %v, want service names: %v", services, want)
	}
	m := make(map[string]int)
	for _, e := range services {
	m[e.Name]++
	}
	for _, e := range want {
	if m[e] > 0 {
	m[e]--
	continue
	}
	t.Errorf("ListService\nreceived: %v,\nwant: %q", services, want)
	}
	default:
	t.Errorf("ListServices = %v, want type <ServerReflectionResponse_ListServicesResponse>", r.MessageResponse)
	}
	}