snapshot of https://github.com/grpc/grpc-go.git (master, 2026-09-15; blobs > 131072B omitted)

encoding/proto/proto_test.go

@@ -0,0 +1,139 @@
+/*
+ *
+ * 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/mem"
+	pb "google.golang.org/grpc/test/codec_perf"
+)
+
+func marshalAndUnmarshal(t *testing.T, codec encoding.CodecV2, expectedBody []byte) {
+	p := &pb.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, &codecV2{}, []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 := &codecV2{}
+
+	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 := &codecV2{}
+	codec2 := &codecV2{}
+
+	expectedBody1 := []byte{1, 2, 3}
+	expectedBody2 := []byte{4, 5, 6}
+
+	proto1 := pb.Buffer{Body: expectedBody1}
+	proto2 := pb.Buffer{Body: expectedBody2}
+
+	var m1, m2 mem.BufferSlice
+	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)
+		}
+	}
+}