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/*
*
* Copyright 2018 gRPC 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 proto
import (
"bytes"
"sync"
"testing"
"google.golang.org/grpc/encoding"
"google.golang.org/grpc/internal/grpctest"
"google.golang.org/grpc/test/codec_perf"
)
func marshalAndUnmarshal(t *testing.T, codec encoding.Codec, expectedBody []byte) {
p := &codec_perf.Buffer{}
p.Body = expectedBody
marshalledBytes, err := codec.Marshal(p)
if err != nil {
t.Errorf("codec.Marshal(_) returned an error")
}
if err := codec.Unmarshal(marshalledBytes, p); err != nil {
t.Errorf("codec.Unmarshal(_) returned an error")
}
if !bytes.Equal(p.GetBody(), expectedBody) {
t.Errorf("Unexpected body; got %v; want %v", p.GetBody(), expectedBody)
}
}
type s struct {
grpctest.Tester
}
func Test(t *testing.T) {
grpctest.RunSubTests(t, s{})
}
func (s) TestBasicProtoCodecMarshalAndUnmarshal(t *testing.T) {
marshalAndUnmarshal(t, codec{}, []byte{1, 2, 3})
}
// Try to catch possible race conditions around use of pools
func (s) TestConcurrentUsage(t *testing.T) {
const (
numGoRoutines = 100
numMarshUnmarsh = 1000
)
// small, arbitrary byte slices
protoBodies := [][]byte{
[]byte("one"),
[]byte("two"),
[]byte("three"),
[]byte("four"),
[]byte("five"),
}
var wg sync.WaitGroup
codec := codec{}
for i := 0; i < numGoRoutines; i++ {
wg.Add(1)
go func() {
defer wg.Done()
for k := 0; k < numMarshUnmarsh; k++ {
marshalAndUnmarshal(t, codec, protoBodies[k%len(protoBodies)])
}
}()
}
wg.Wait()
}
// TestStaggeredMarshalAndUnmarshalUsingSamePool tries to catch potential errors in which slices get
// stomped on during reuse of a proto.Buffer.
func (s) TestStaggeredMarshalAndUnmarshalUsingSamePool(t *testing.T) {
codec1 := codec{}
codec2 := codec{}
expectedBody1 := []byte{1, 2, 3}
expectedBody2 := []byte{4, 5, 6}
proto1 := codec_perf.Buffer{Body: expectedBody1}
proto2 := codec_perf.Buffer{Body: expectedBody2}
var m1, m2 []byte
var err error
if m1, err = codec1.Marshal(&proto1); err != nil {
t.Errorf("codec.Marshal(%s) failed", &proto1)
}
if m2, err = codec2.Marshal(&proto2); err != nil {
t.Errorf("codec.Marshal(%s) failed", &proto2)
}
if err = codec1.Unmarshal(m1, &proto1); err != nil {
t.Errorf("codec.Unmarshal(%v) failed", m1)
}
if err = codec2.Unmarshal(m2, &proto2); err != nil {
t.Errorf("codec.Unmarshal(%v) failed", m2)
}
b1 := proto1.GetBody()
b2 := proto2.GetBody()
for i, v := range b1 {
if expectedBody1[i] != v {
t.Errorf("expected %v at index %v but got %v", i, expectedBody1[i], v)
}
}
for i, v := range b2 {
if expectedBody2[i] != v {
t.Errorf("expected %v at index %v but got %v", i, expectedBody2[i], v)
}
}
}
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