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// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// The protoreflect tag disables fast-path methods, including legacy ones.
//go:build !protoreflect
// +build !protoreflect
package proto_test
import (
"bytes"
"errors"
"fmt"
"testing"
"google.golang.org/protobuf/internal/impl"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/runtime/protoiface"
legacypb "google.golang.org/protobuf/internal/testprotos/legacy"
)
type selfMarshaler struct {
bytes []byte
err error
}
func (m selfMarshaler) Reset() {}
func (m selfMarshaler) ProtoMessage() {}
func (m selfMarshaler) String() string {
return fmt.Sprintf("selfMarshaler{bytes:%v, err:%v}", m.bytes, m.err)
}
func (m selfMarshaler) Marshal() ([]byte, error) {
return m.bytes, m.err
}
func (m *selfMarshaler) Unmarshal(b []byte) error {
m.bytes = b
return m.err
}
func TestLegacyMarshalMethod(t *testing.T) {
for _, test := range []selfMarshaler{
{bytes: []byte("marshal")},
{bytes: []byte("marshal"), err: errors.New("some error")},
} {
m := impl.Export{}.MessageOf(test).Interface()
b, err := proto.Marshal(m)
if err != test.err || !bytes.Equal(b, test.bytes) {
t.Errorf("proto.Marshal(%v) = %v, %v; want %v, %v", test, b, err, test.bytes, test.err)
}
if gotSize, wantSize := proto.Size(m), len(test.bytes); gotSize != wantSize {
t.Fatalf("proto.Size(%v) = %v, want %v", test, gotSize, wantSize)
}
prefix := []byte("prefix")
want := append(prefix, test.bytes...)
b, err = proto.MarshalOptions{}.MarshalAppend(prefix, m)
if err != test.err || !bytes.Equal(b, want) {
t.Errorf("MarshalAppend(%v, %v) = %v, %v; want %v, %v", prefix, test, b, err, test.bytes, test.err)
}
b, err = proto.MarshalOptions{
Deterministic: true,
}.MarshalAppend(nil, m)
if err != test.err || !bytes.Equal(b, test.bytes) {
t.Errorf("MarshalOptions{Deterministic:true}.MarshalAppend(nil, %v) = %v, %v; want %v, %v", test, b, err, test.bytes, test.err)
}
}
}
func TestLegacyUnmarshalMethod(t *testing.T) {
sm := &selfMarshaler{}
m := impl.Export{}.MessageOf(sm).Interface()
want := []byte("unmarshal")
if err := proto.Unmarshal(want, m); err != nil {
t.Fatalf("proto.Unmarshal(selfMarshaler{}) = %v, want nil", err)
}
if !bytes.Equal(sm.bytes, want) {
t.Fatalf("proto.Unmarshal(selfMarshaler{}): Marshal method not called")
}
}
type descPanicSelfMarshaler struct{}
const descPanicSelfMarshalerBytes = "bytes"
func (m *descPanicSelfMarshaler) Reset() {}
func (m *descPanicSelfMarshaler) ProtoMessage() {}
func (m *descPanicSelfMarshaler) Descriptor() ([]byte, []int) { panic("Descriptor method panics") }
func (m *descPanicSelfMarshaler) String() string { return "descPanicSelfMarshaler{}" }
func (m *descPanicSelfMarshaler) Marshal() ([]byte, error) {
return []byte(descPanicSelfMarshalerBytes), nil
}
func TestSelfMarshalerDescriptorPanics(t *testing.T) {
m := &descPanicSelfMarshaler{}
got, err := proto.Marshal(impl.Export{}.MessageOf(m).Interface())
want := []byte(descPanicSelfMarshalerBytes)
if err != nil || !bytes.Equal(got, want) {
t.Fatalf("proto.Marshal(%v) = %v, %v; want %v, nil", m, got, err, want)
}
}
type descSelfMarshaler struct {
someField int // some non-generated field
}
const descSelfMarshalerBytes = "bytes"
func (m *descSelfMarshaler) Reset() {}
func (m *descSelfMarshaler) ProtoMessage() {}
func (m *descSelfMarshaler) Descriptor() ([]byte, []int) {
return ((*legacypb.Legacy)(nil)).GetF1().Descriptor()
}
func (m *descSelfMarshaler) String() string {
return "descSelfMarshaler{}"
}
func (m *descSelfMarshaler) Marshal() ([]byte, error) {
return []byte(descSelfMarshalerBytes), nil
}
func TestSelfMarshalerWithDescriptor(t *testing.T) {
m := &descSelfMarshaler{}
got, err := proto.Marshal(impl.Export{}.MessageOf(m).Interface())
want := []byte(descSelfMarshalerBytes)
if err != nil || !bytes.Equal(got, want) {
t.Fatalf("proto.Marshal(%v) = %v, %v; want %v, nil", m, got, err, want)
}
}
func TestDecodeFastCheckInitialized(t *testing.T) {
for _, test := range testValidMessages {
if !test.checkFastInit {
continue
}
for _, message := range test.decodeTo {
t.Run(fmt.Sprintf("%s (%T)", test.desc, message), func(t *testing.T) {
m := message.ProtoReflect().New()
opts := proto.UnmarshalOptions{
AllowPartial: true,
}
out, err := opts.UnmarshalState(protoiface.UnmarshalInput{
Buf: test.wire,
Message: m,
})
if err != nil {
t.Fatalf("Unmarshal error: %v", err)
}
if got, want := (out.Flags&protoiface.UnmarshalInitialized != 0), !test.partial; got != want {
t.Errorf("out.Initialized = %v, want %v", got, want)
}
})
}
}
}
type selfMerger struct {
src protoiface.MessageV1
}
func (*selfMerger) Reset() {}
func (*selfMerger) ProtoMessage() {}
func (*selfMerger) String() string { return "selfMerger{}" }
func (m *selfMerger) Merge(src protoiface.MessageV1) {
m.src = src
}
func TestLegacyMergeMethod(t *testing.T) {
src := &selfMerger{}
dst := &selfMerger{}
proto.Merge(
impl.Export{}.MessageOf(dst).Interface(),
impl.Export{}.MessageOf(src).Interface(),
)
if got, want := dst.src, src; got != want {
t.Errorf("Merge(dst, src): want dst.src = src, got %v", got)
}
if got := src.src; got != nil {
t.Errorf("Merge(dst, src): want src.src = nil, got %v", got)
}
}
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