rpcreplay/rpcreplay_test.go - gocloud - Git at Google

 // Copyright 2017 Google Inc. All Rights Reserved.
 //
 // 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 rpcreplay

 import (
 	"bytes"
 	"io"
 	"testing"

 	"cloud.google.com/go/internal/testutil"
 	ipb "cloud.google.com/go/rpcreplay/proto/intstore"
 	rpb "cloud.google.com/go/rpcreplay/proto/rpcreplay"
 	"github.com/golang/protobuf/proto"
 	"golang.org/x/net/context"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 )

 func TestRecordIO(t *testing.T) {
 	buf := &bytes.Buffer{}
 	want := []byte{1, 2, 3}
 	if err := writeRecord(buf, want); err != nil {
 		t.Fatal(err)
 	}
 	got, err := readRecord(buf)
 	if err != nil {
 		t.Fatal(err)
 	}
 	if !bytes.Equal(got, want) {
 		t.Errorf("got %v, want %v", got, want)
 	}
 }

 func TestHeaderIO(t *testing.T) {
 	buf := &bytes.Buffer{}
 	want := []byte{1, 2, 3}
 	if err := writeHeader(buf, want); err != nil {
 		t.Fatal(err)
 	}
 	got, err := readHeader(buf)
 	if err != nil {
 		t.Fatal(err)
 	}
 	if !testutil.Equal(got, want) {
 		t.Errorf("got %v, want %v", got, want)
 	}

 	// readHeader errors
 	for _, contents := range []string{"", "badmagic", "gRPCReplay"} {
 		if _, err := readHeader(bytes.NewBufferString(contents)); err == nil {
 			t.Errorf("%q: got nil, want error", contents)
 		}
 	}
 }

 func TestEntryIO(t *testing.T) {
 	for i, want := range []*entry{
 		{
 			kind:     rpb.Entry_REQUEST,
 			method:   "method",
 			msg:      message{msg: &rpb.Entry{}},
 			refIndex: 7,
 		},
 		{
 			kind:     rpb.Entry_RESPONSE,
 			method:   "method",
 			msg:      message{err: status.Error(codes.NotFound, "not found")},
 			refIndex: 8,
 		},
 		{
 			kind:     rpb.Entry_RECV,
 			method:   "method",
 			msg:      message{err: io.EOF},
 			refIndex: 3,
 		},
 	} {
 		buf := &bytes.Buffer{}
 		if err := writeEntry(buf, want); err != nil {
 			t.Fatal(err)
 		}
 		got, err := readEntry(buf)
 		if err != nil {
 			t.Fatal(err)
 		}
 		if !got.equal(want) {
 			t.Errorf("#%d: got %v, want %v", i, got, want)
 		}
 	}
 }

 var initialState = []byte{1, 2, 3}

 func TestRecord(t *testing.T) {
 	srv := newIntStoreServer()
 	defer srv.stop()
 	buf := record(t, srv)

 	gotIstate, err := readHeader(buf)
 	if err != nil {
 		t.Fatal(err)
 	}
 	if !testutil.Equal(gotIstate, initialState) {
 		t.Fatalf("got %v, want %v", gotIstate, initialState)
 	}
 	item := &ipb.Item{Name: "a", Value: 1}
 	wantEntries := []*entry{
 		// Set
 		{
 			kind:   rpb.Entry_REQUEST,
 			method: "/intstore.IntStore/Set",
 			msg:    message{msg: item},
 		},
 		{
 			kind:     rpb.Entry_RESPONSE,
 			msg:      message{msg: &ipb.SetResponse{PrevValue: 0}},
 			refIndex: 1,
 		},
 		// Get
 		{
 			kind:   rpb.Entry_REQUEST,
 			method: "/intstore.IntStore/Get",
 			msg:    message{msg: &ipb.GetRequest{Name: "a"}},
 		},
 		{
 			kind:     rpb.Entry_RESPONSE,
 			msg:      message{msg: item},
 			refIndex: 3,
 		},
 		{
 			kind:   rpb.Entry_REQUEST,
 			method: "/intstore.IntStore/Get",
 			msg:    message{msg: &ipb.GetRequest{Name: "x"}},
 		},
 		{
 			kind:     rpb.Entry_RESPONSE,
 			msg:      message{err: status.Error(codes.NotFound, `"x"`)},
 			refIndex: 5,
 		},
 		// ListItems
 		{ // entry #7
 			kind:   rpb.Entry_CREATE_STREAM,
 			method: "/intstore.IntStore/ListItems",
 		},
 		{
 			kind:     rpb.Entry_SEND,
 			msg:      message{msg: &ipb.ListItemsRequest{}},
 			refIndex: 7,
 		},
 		{
 			kind:     rpb.Entry_RECV,
 			msg:      message{msg: item},
 			refIndex: 7,
 		},
 		{
 			kind:     rpb.Entry_RECV,
 			msg:      message{err: io.EOF},
 			refIndex: 7,
 		},
 		// SetStream
 		{ // entry #11
 			kind:   rpb.Entry_CREATE_STREAM,
 			method: "/intstore.IntStore/SetStream",
 		},
 		{
 			kind:     rpb.Entry_SEND,
 			msg:      message{msg: &ipb.Item{Name: "b", Value: 2}},
 			refIndex: 11,
 		},
 		{
 			kind:     rpb.Entry_SEND,
 			msg:      message{msg: &ipb.Item{Name: "c", Value: 3}},
 			refIndex: 11,
 		},
 		{
 			kind:     rpb.Entry_RECV,
 			msg:      message{msg: &ipb.Summary{Count: 2}},
 			refIndex: 11,
 		},

 		// StreamChat
 		{ // entry #15
 			kind:   rpb.Entry_CREATE_STREAM,
 			method: "/intstore.IntStore/StreamChat",
 		},
 		{
 			kind:     rpb.Entry_SEND,
 			msg:      message{msg: &ipb.Item{Name: "d", Value: 4}},
 			refIndex: 15,
 		},
 		{
 			kind:     rpb.Entry_RECV,
 			msg:      message{msg: &ipb.Item{Name: "d", Value: 4}},
 			refIndex: 15,
 		},
 		{
 			kind:     rpb.Entry_SEND,
 			msg:      message{msg: &ipb.Item{Name: "e", Value: 5}},
 			refIndex: 15,
 		},
 		{
 			kind:     rpb.Entry_RECV,
 			msg:      message{msg: &ipb.Item{Name: "e", Value: 5}},
 			refIndex: 15,
 		},
 		{
 			kind:     rpb.Entry_RECV,
 			msg:      message{err: io.EOF},
 			refIndex: 15,
 		},
 	}
 	for i, w := range wantEntries {
 		g, err := readEntry(buf)
 		if err != nil {
 			t.Fatalf("#%d: %v", i+1, err)
 		}
 		if !g.equal(w) {
 			t.Errorf("#%d:\ngot  %+v\nwant %+v", i+1, g, w)
 		}
 	}
 	g, err := readEntry(buf)
 	if err != nil {
 		t.Fatal(err)
 	}
 	if g != nil {
 		t.Errorf("\ngot  %+v\nwant nil", g)
 	}
 }

 func TestReplay(t *testing.T) {
 	srv := newIntStoreServer()
 	defer srv.stop()

 	buf := record(t, srv)
 	rep, err := NewReplayerReader(buf)
 	if err != nil {
 		t.Fatal(err)
 	}
 	if got, want := rep.Initial(), initialState; !testutil.Equal(got, want) {
 		t.Fatalf("got %v, want %v", got, want)
 	}
 	// Replay the test.
 	testService(t, srv.Addr, rep.DialOptions())
 }

 func record(t *testing.T, srv *intStoreServer) *bytes.Buffer {
 	buf := &bytes.Buffer{}
 	rec, err := NewRecorderWriter(buf, initialState)
 	if err != nil {
 		t.Fatal(err)
 	}
 	testService(t, srv.Addr, rec.DialOptions())
 	if err := rec.Close(); err != nil {
 		t.Fatal(err)
 	}
 	return buf
 }

 func testService(t *testing.T, addr string, opts []grpc.DialOption) {
 	conn, err := grpc.Dial(addr,
 		append([]grpc.DialOption{grpc.WithInsecure()}, opts...)...)
 	if err != nil {
 		t.Fatal(err)
 	}
 	defer conn.Close()
 	client := ipb.NewIntStoreClient(conn)
 	ctx := context.Background()
 	item := &ipb.Item{Name: "a", Value: 1}
 	res, err := client.Set(ctx, item)
 	if err != nil {
 		t.Fatal(err)
 	}
 	if res.PrevValue != 0 {
 		t.Errorf("got %d, want 0", res.PrevValue)
 	}
 	got, err := client.Get(ctx, &ipb.GetRequest{Name: "a"})
 	if err != nil {
 		t.Fatal(err)
 	}
 	if !proto.Equal(got, item) {
 		t.Errorf("got %v, want %v", got, item)
 	}
 	_, err = client.Get(ctx, &ipb.GetRequest{Name: "x"})
 	if err == nil {
 		t.Fatal("got nil, want error")
 	}
 	if _, ok := status.FromError(err); !ok {
 		t.Errorf("got error type %T, want a grpc/status.Status", err)
 	}

 	wantItems := []*ipb.Item{item}
 	lic, err := client.ListItems(ctx, &ipb.ListItemsRequest{})
 	if err != nil {
 		t.Fatal(err)
 	}
 	for i := 0; ; i++ {
 		item, err := lic.Recv()
 		if err == io.EOF {
 			break
 		}
 		if err != nil {
 			t.Fatal(err)
 		}
 		if i >= len(wantItems) || !proto.Equal(item, wantItems[i]) {
 			t.Fatalf("%d: bad item", i)
 		}
 	}

 	ssc, err := client.SetStream(ctx)
 	if err != nil {
 		t.Fatal(err)
 	}

 	must := func(err error) {
 		if err != nil {
 			t.Fatal(err)
 		}
 	}

 	for i, name := range []string{"b", "c"} {
 		must(ssc.Send(&ipb.Item{Name: name, Value: int32(i + 2)}))
 	}
 	summary, err := ssc.CloseAndRecv()
 	if err != nil {
 		t.Fatal(err)
 	}
 	if got, want := summary.Count, int32(2); got != want {
 		t.Fatalf("got %d, want %d", got, want)
 	}

 	chatc, err := client.StreamChat(ctx)
 	if err != nil {
 		t.Fatal(err)
 	}
 	for i, name := range []string{"d", "e"} {
 		item := &ipb.Item{Name: name, Value: int32(i + 4)}
 		must(chatc.Send(item))
 		got, err := chatc.Recv()
 		if err != nil {
 			t.Fatal(err)
 		}
 		if !proto.Equal(got, item) {
 			t.Errorf("got %v, want %v", got, item)
 		}
 	}
 	must(chatc.CloseSend())
 	if _, err := chatc.Recv(); err != io.EOF {
 		t.Fatalf("got %v, want EOF", err)
 	}
 }
	// Copyright 2017 Google Inc. All Rights Reserved.
	//
	// 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 rpcreplay

	import (
	"bytes"
	"io"
	"testing"

	"cloud.google.com/go/internal/testutil"
	ipb "cloud.google.com/go/rpcreplay/proto/intstore"
	rpb "cloud.google.com/go/rpcreplay/proto/rpcreplay"
	"github.com/golang/protobuf/proto"
	"golang.org/x/net/context"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"
	)

	func TestRecordIO(t *testing.T) {
	buf := &bytes.Buffer{}
	want := []byte{1, 2, 3}
	if err := writeRecord(buf, want); err != nil {
	t.Fatal(err)
	}
	got, err := readRecord(buf)
	if err != nil {
	t.Fatal(err)
	}
	if !bytes.Equal(got, want) {
	t.Errorf("got %v, want %v", got, want)
	}
	}

	func TestHeaderIO(t *testing.T) {
	buf := &bytes.Buffer{}
	want := []byte{1, 2, 3}
	if err := writeHeader(buf, want); err != nil {
	t.Fatal(err)
	}
	got, err := readHeader(buf)
	if err != nil {
	t.Fatal(err)
	}
	if !testutil.Equal(got, want) {
	t.Errorf("got %v, want %v", got, want)
	}

	// readHeader errors
	for _, contents := range []string{"", "badmagic", "gRPCReplay"} {
	if _, err := readHeader(bytes.NewBufferString(contents)); err == nil {
	t.Errorf("%q: got nil, want error", contents)
	}
	}
	}

	func TestEntryIO(t *testing.T) {
	for i, want := range []*entry{
	{
	kind: rpb.Entry_REQUEST,
	method: "method",
	msg: message{msg: &rpb.Entry{}},
	refIndex: 7,
	},
	{
	kind: rpb.Entry_RESPONSE,
	method: "method",
	msg: message{err: status.Error(codes.NotFound, "not found")},
	refIndex: 8,
	},
	{
	kind: rpb.Entry_RECV,
	method: "method",
	msg: message{err: io.EOF},
	refIndex: 3,
	},
	} {
	buf := &bytes.Buffer{}
	if err := writeEntry(buf, want); err != nil {
	t.Fatal(err)
	}
	got, err := readEntry(buf)
	if err != nil {
	t.Fatal(err)
	}
	if !got.equal(want) {
	t.Errorf("#%d: got %v, want %v", i, got, want)
	}
	}
	}

	var initialState = []byte{1, 2, 3}

	func TestRecord(t *testing.T) {
	srv := newIntStoreServer()
	defer srv.stop()
	buf := record(t, srv)

	gotIstate, err := readHeader(buf)
	if err != nil {
	t.Fatal(err)
	}
	if !testutil.Equal(gotIstate, initialState) {
	t.Fatalf("got %v, want %v", gotIstate, initialState)
	}
	item := &ipb.Item{Name: "a", Value: 1}
	wantEntries := []*entry{
	// Set
	{
	kind: rpb.Entry_REQUEST,
	method: "/intstore.IntStore/Set",
	msg: message{msg: item},
	},
	{
	kind: rpb.Entry_RESPONSE,
	msg: message{msg: &ipb.SetResponse{PrevValue: 0}},
	refIndex: 1,
	},
	// Get
	{
	kind: rpb.Entry_REQUEST,
	method: "/intstore.IntStore/Get",
	msg: message{msg: &ipb.GetRequest{Name: "a"}},
	},
	{
	kind: rpb.Entry_RESPONSE,
	msg: message{msg: item},
	refIndex: 3,
	},
	{
	kind: rpb.Entry_REQUEST,
	method: "/intstore.IntStore/Get",
	msg: message{msg: &ipb.GetRequest{Name: "x"}},
	},
	{
	kind: rpb.Entry_RESPONSE,
	msg: message{err: status.Error(codes.NotFound, `"x"`)},
	refIndex: 5,
	},
	// ListItems
	{ // entry #7
	kind: rpb.Entry_CREATE_STREAM,
	method: "/intstore.IntStore/ListItems",
	},
	{
	kind: rpb.Entry_SEND,
	msg: message{msg: &ipb.ListItemsRequest{}},
	refIndex: 7,
	},
	{
	kind: rpb.Entry_RECV,
	msg: message{msg: item},
	refIndex: 7,
	},
	{
	kind: rpb.Entry_RECV,
	msg: message{err: io.EOF},
	refIndex: 7,
	},
	// SetStream
	{ // entry #11
	kind: rpb.Entry_CREATE_STREAM,
	method: "/intstore.IntStore/SetStream",
	},
	{
	kind: rpb.Entry_SEND,
	msg: message{msg: &ipb.Item{Name: "b", Value: 2}},
	refIndex: 11,
	},
	{
	kind: rpb.Entry_SEND,
	msg: message{msg: &ipb.Item{Name: "c", Value: 3}},
	refIndex: 11,
	},
	{
	kind: rpb.Entry_RECV,
	msg: message{msg: &ipb.Summary{Count: 2}},
	refIndex: 11,
	},

	// StreamChat
	{ // entry #15
	kind: rpb.Entry_CREATE_STREAM,
	method: "/intstore.IntStore/StreamChat",
	},
	{
	kind: rpb.Entry_SEND,
	msg: message{msg: &ipb.Item{Name: "d", Value: 4}},
	refIndex: 15,
	},
	{
	kind: rpb.Entry_RECV,
	msg: message{msg: &ipb.Item{Name: "d", Value: 4}},
	refIndex: 15,
	},
	{
	kind: rpb.Entry_SEND,
	msg: message{msg: &ipb.Item{Name: "e", Value: 5}},
	refIndex: 15,
	},
	{
	kind: rpb.Entry_RECV,
	msg: message{msg: &ipb.Item{Name: "e", Value: 5}},
	refIndex: 15,
	},
	{
	kind: rpb.Entry_RECV,
	msg: message{err: io.EOF},
	refIndex: 15,
	},
	}
	for i, w := range wantEntries {
	g, err := readEntry(buf)
	if err != nil {
	t.Fatalf("#%d: %v", i+1, err)
	}
	if !g.equal(w) {
	t.Errorf("#%d:\ngot %+v\nwant %+v", i+1, g, w)
	}
	}
	g, err := readEntry(buf)
	if err != nil {
	t.Fatal(err)
	}
	if g != nil {
	t.Errorf("\ngot %+v\nwant nil", g)
	}
	}

	func TestReplay(t *testing.T) {
	srv := newIntStoreServer()
	defer srv.stop()

	buf := record(t, srv)
	rep, err := NewReplayerReader(buf)
	if err != nil {
	t.Fatal(err)
	}
	if got, want := rep.Initial(), initialState; !testutil.Equal(got, want) {
	t.Fatalf("got %v, want %v", got, want)
	}
	// Replay the test.
	testService(t, srv.Addr, rep.DialOptions())
	}

	func record(t testing.T, srv intStoreServer) *bytes.Buffer {
	buf := &bytes.Buffer{}
	rec, err := NewRecorderWriter(buf, initialState)
	if err != nil {
	t.Fatal(err)
	}
	testService(t, srv.Addr, rec.DialOptions())
	if err := rec.Close(); err != nil {
	t.Fatal(err)
	}
	return buf
	}

	func testService(t *testing.T, addr string, opts []grpc.DialOption) {
	conn, err := grpc.Dial(addr,
	append([]grpc.DialOption{grpc.WithInsecure()}, opts...)...)
	if err != nil {
	t.Fatal(err)
	}
	defer conn.Close()
	client := ipb.NewIntStoreClient(conn)
	ctx := context.Background()
	item := &ipb.Item{Name: "a", Value: 1}
	res, err := client.Set(ctx, item)
	if err != nil {
	t.Fatal(err)
	}
	if res.PrevValue != 0 {
	t.Errorf("got %d, want 0", res.PrevValue)
	}
	got, err := client.Get(ctx, &ipb.GetRequest{Name: "a"})
	if err != nil {
	t.Fatal(err)
	}
	if !proto.Equal(got, item) {
	t.Errorf("got %v, want %v", got, item)
	}
	_, err = client.Get(ctx, &ipb.GetRequest{Name: "x"})
	if err == nil {
	t.Fatal("got nil, want error")
	}
	if _, ok := status.FromError(err); !ok {
	t.Errorf("got error type %T, want a grpc/status.Status", err)
	}

	wantItems := []*ipb.Item{item}
	lic, err := client.ListItems(ctx, &ipb.ListItemsRequest{})
	if err != nil {
	t.Fatal(err)
	}
	for i := 0; ; i++ {
	item, err := lic.Recv()
	if err == io.EOF {
	break
	}
	if err != nil {
	t.Fatal(err)
	}
	if i >= len(wantItems) \|\| !proto.Equal(item, wantItems[i]) {
	t.Fatalf("%d: bad item", i)
	}
	}

	ssc, err := client.SetStream(ctx)
	if err != nil {
	t.Fatal(err)
	}

	must := func(err error) {
	if err != nil {
	t.Fatal(err)
	}
	}

	for i, name := range []string{"b", "c"} {
	must(ssc.Send(&ipb.Item{Name: name, Value: int32(i + 2)}))
	}
	summary, err := ssc.CloseAndRecv()
	if err != nil {
	t.Fatal(err)
	}
	if got, want := summary.Count, int32(2); got != want {
	t.Fatalf("got %d, want %d", got, want)
	}

	chatc, err := client.StreamChat(ctx)
	if err != nil {
	t.Fatal(err)
	}
	for i, name := range []string{"d", "e"} {
	item := &ipb.Item{Name: name, Value: int32(i + 4)}
	must(chatc.Send(item))
	got, err := chatc.Recv()
	if err != nil {
	t.Fatal(err)
	}
	if !proto.Equal(got, item) {
	t.Errorf("got %v, want %v", got, item)
	}
	}
	must(chatc.CloseSend())
	if _, err := chatc.Recv(); err != io.EOF {
	t.Fatalf("got %v, want EOF", err)
	}
	}