// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2014 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// 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 proto_test
import (
"bytes"
"fmt"
"reflect"
"sort"
"testing"
"github.com/golang/protobuf/proto"
pb "github.com/golang/protobuf/proto/testdata"
"golang.org/x/sync/errgroup"
)
func TestGetExtensionsWithMissingExtensions(t *testing.T) {
msg := &pb.MyMessage{}
ext1 := &pb.Ext{}
if err := proto.SetExtension(msg, pb.E_Ext_More, ext1); err != nil {
t.Fatalf("Could not set ext1: %s", err)
}
exts, err := proto.GetExtensions(msg, []*proto.ExtensionDesc{
pb.E_Ext_More,
pb.E_Ext_Text,
})
if err != nil {
t.Fatalf("GetExtensions() failed: %s", err)
}
if exts[0] != ext1 {
t.Errorf("ext1 not in returned extensions: %T %v", exts[0], exts[0])
}
if exts[1] != nil {
t.Errorf("ext2 in returned extensions: %T %v", exts[1], exts[1])
}
}
func TestExtensionDescsWithMissingExtensions(t *testing.T) {
msg := &pb.MyMessage{Count: proto.Int32(0)}
extdesc1 := pb.E_Ext_More
if descs, err := proto.ExtensionDescs(msg); len(descs) != 0 || err != nil {
t.Errorf("proto.ExtensionDescs: got %d descs, error %v; want 0, nil", len(descs), err)
}
ext1 := &pb.Ext{}
if err := proto.SetExtension(msg, extdesc1, ext1); err != nil {
t.Fatalf("Could not set ext1: %s", err)
}
extdesc2 := &proto.ExtensionDesc{
ExtendedType: (*pb.MyMessage)(nil),
ExtensionType: (*bool)(nil),
Field: 123456789,
Name: "a.b",
Tag: "varint,123456789,opt",
}
ext2 := proto.Bool(false)
if err := proto.SetExtension(msg, extdesc2, ext2); err != nil {
t.Fatalf("Could not set ext2: %s", err)
}
b, err := proto.Marshal(msg)
if err != nil {
t.Fatalf("Could not marshal msg: %v", err)
}
if err := proto.Unmarshal(b, msg); err != nil {
t.Fatalf("Could not unmarshal into msg: %v", err)
}
descs, err := proto.ExtensionDescs(msg)
if err != nil {
t.Fatalf("proto.ExtensionDescs: got error %v", err)
}
sortExtDescs(descs)
wantDescs := []*proto.ExtensionDesc{extdesc1, &proto.ExtensionDesc{Field: extdesc2.Field}}
if !reflect.DeepEqual(descs, wantDescs) {
t.Errorf("proto.ExtensionDescs(msg) sorted extension ids: got %+v, want %+v", descs, wantDescs)
}
}
type ExtensionDescSlice []*proto.ExtensionDesc
func (s ExtensionDescSlice) Len() int { return len(s) }
func (s ExtensionDescSlice) Less(i, j int) bool { return s[i].Field < s[j].Field }
func (s ExtensionDescSlice) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
func sortExtDescs(s []*proto.ExtensionDesc) {
sort.Sort(ExtensionDescSlice(s))
}
func TestGetExtensionStability(t *testing.T) {
check := func(m *pb.MyMessage) bool {
ext1, err := proto.GetExtension(m, pb.E_Ext_More)
if err != nil {
t.Fatalf("GetExtension() failed: %s", err)
}
ext2, err := proto.GetExtension(m, pb.E_Ext_More)
if err != nil {
t.Fatalf("GetExtension() failed: %s", err)
}
return ext1 == ext2
}
msg := &pb.MyMessage{Count: proto.Int32(4)}
ext0 := &pb.Ext{}
if err := proto.SetExtension(msg, pb.E_Ext_More, ext0); err != nil {
t.Fatalf("Could not set ext1: %s", ext0)
}
if !check(msg) {
t.Errorf("GetExtension() not stable before marshaling")
}
bb, err := proto.Marshal(msg)
if err != nil {
t.Fatalf("Marshal() failed: %s", err)
}
msg1 := &pb.MyMessage{}
err = proto.Unmarshal(bb, msg1)
if err != nil {
t.Fatalf("Unmarshal() failed: %s", err)
}
if !check(msg1) {
t.Errorf("GetExtension() not stable after unmarshaling")
}
}
func TestGetExtensionDefaults(t *testing.T) {
var setFloat64 float64 = 1
var setFloat32 float32 = 2
var setInt32 int32 = 3
var setInt64 int64 = 4
var setUint32 uint32 = 5
var setUint64 uint64 = 6
var setBool = true
var setBool2 = false
var setString = "Goodnight string"
var setBytes = []byte("Goodnight bytes")
var setEnum = pb.DefaultsMessage_TWO
type testcase struct {
ext *proto.ExtensionDesc // Extension we are testing.
want interface{} // Expected value of extension, or nil (meaning that GetExtension will fail).
def interface{} // Expected value of extension after ClearExtension().
}
tests := []testcase{
{pb.E_NoDefaultDouble, setFloat64, nil},
{pb.E_NoDefaultFloat, setFloat32, nil},
{pb.E_NoDefaultInt32, setInt32, nil},
{pb.E_NoDefaultInt64, setInt64, nil},
{pb.E_NoDefaultUint32, setUint32, nil},
{pb.E_NoDefaultUint64, setUint64, nil},
{pb.E_NoDefaultSint32, setInt32, nil},
{pb.E_NoDefaultSint64, setInt64, nil},
{pb.E_NoDefaultFixed32, setUint32, nil},
{pb.E_NoDefaultFixed64, setUint64, nil},
{pb.E_NoDefaultSfixed32, setInt32, nil},
{pb.E_NoDefaultSfixed64, setInt64, nil},
{pb.E_NoDefaultBool, setBool, nil},
{pb.E_NoDefaultBool, setBool2, nil},
{pb.E_NoDefaultString, setString, nil},
{pb.E_NoDefaultBytes, setBytes, nil},
{pb.E_NoDefaultEnum, setEnum, nil},
{pb.E_DefaultDouble, setFloat64, float64(3.1415)},
{pb.E_DefaultFloat, setFloat32, float32(3.14)},
{pb.E_DefaultInt32, setInt32, int32(42)},
{pb.E_DefaultInt64, setInt64, int64(43)},
{pb.E_DefaultUint32, setUint32, uint32(44)},
{pb.E_DefaultUint64, setUint64, uint64(45)},
{pb.E_DefaultSint32, setInt32, int32(46)},
{pb.E_DefaultSint64, setInt64, int64(47)},
{pb.E_DefaultFixed32, setUint32, uint32(48)},
{pb.E_DefaultFixed64, setUint64, uint64(49)},
{pb.E_DefaultSfixed32, setInt32, int32(50)},
{pb.E_DefaultSfixed64, setInt64, int64(51)},
{pb.E_DefaultBool, setBool, true},
{pb.E_DefaultBool, setBool2, true},
{pb.E_DefaultString, setString, "Hello, string"},
{pb.E_DefaultBytes, setBytes, []byte("Hello, bytes")},
{pb.E_DefaultEnum, setEnum, pb.DefaultsMessage_ONE},
}
checkVal := func(test testcase, msg *pb.DefaultsMessage, valWant interface{}) error {
val, err := proto.GetExtension(msg, test.ext)
if err != nil {
if valWant != nil {
return fmt.Errorf("GetExtension(): %s", err)
}
if want := proto.ErrMissingExtension; err != want {
return fmt.Errorf("Unexpected error: got %v, want %v", err, want)
}
return nil
}
// All proto2 extension values are either a pointer to a value or a slice of values.
ty := reflect.TypeOf(val)
tyWant := reflect.TypeOf(test.ext.ExtensionType)
if got, want := ty, tyWant; got != want {
return fmt.Errorf("unexpected reflect.TypeOf(): got %v want %v", got, want)
}
tye := ty.Elem()
tyeWant := tyWant.Elem()
if got, want := tye, tyeWant; got != want {
return fmt.Errorf("unexpected reflect.TypeOf().Elem(): got %v want %v", got, want)
}
// Check the name of the type of the value.
// If it is an enum it will be type int32 with the name of the enum.
if got, want := tye.Name(), tye.Name(); got != want {
return fmt.Errorf("unexpected reflect.TypeOf().Elem().Name(): got %v want %v", got, want)
}
// Check that value is what we expect.
// If we have a pointer in val, get the value it points to.
valExp := val
if ty.Kind() == reflect.Ptr {
valExp = reflect.ValueOf(val).Elem().Interface()
}
if got, want := valExp, valWant; !reflect.DeepEqual(got, want) {
return fmt.Errorf("unexpected reflect.DeepEqual(): got %v want %v", got, want)
}
return nil
}
setTo := func(test testcase) interface{} {
setTo := reflect.ValueOf(test.want)
if typ := reflect.TypeOf(test.ext.ExtensionType); typ.Kind() == reflect.Ptr {
setTo = reflect.New(typ).Elem()
setTo.Set(reflect.New(setTo.Type().Elem()))
setTo.Elem().Set(reflect.ValueOf(test.want))
}
return setTo.Interface()
}
for _, test := range tests {
msg := &pb.DefaultsMessage{}
name := test.ext.Name
// Check the initial value.
if err := checkVal(test, msg, test.def); err != nil {
t.Errorf("%s: %v", name, err)
}
// Set the per-type value and check value.
name = fmt.Sprintf("%s (set to %T %v)", name, test.want, test.want)
if err := proto.SetExtension(msg, test.ext, setTo(test)); err != nil {
t.Errorf("%s: SetExtension(): %v", name, err)
continue
}
if err := checkVal(test, msg, test.want); err != nil {
t.Errorf("%s: %v", name, err)
continue
}
// Set and check the value.
name += " (cleared)"
proto.ClearExtension(msg, test.ext)
if err := checkVal(test, msg, test.def); err != nil {
t.Errorf("%s: %v", name, err)
}
}
}
func TestExtensionsRoundTrip(t *testing.T) {
msg := &pb.MyMessage{}
ext1 := &pb.Ext{
Data: proto.String("hi"),
}
ext2 := &pb.Ext{
Data: proto.String("there"),
}
exists := proto.HasExtension(msg, pb.E_Ext_More)
if exists {
t.Error("Extension More present unexpectedly")
}
if err := proto.SetExtension(msg, pb.E_Ext_More, ext1); err != nil {
t.Error(err)
}
if err := proto.SetExtension(msg, pb.E_Ext_More, ext2); err != nil {
t.Error(err)
}
e, err := proto.GetExtension(msg, pb.E_Ext_More)
if err != nil {
t.Error(err)
}
x, ok := e.(*pb.Ext)
if !ok {
t.Errorf("e has type %T, expected testdata.Ext", e)
} else if *x.Data != "there" {
t.Errorf("SetExtension failed to overwrite, got %+v, not 'there'", x)
}
proto.ClearExtension(msg, pb.E_Ext_More)
if _, err = proto.GetExtension(msg, pb.E_Ext_More); err != proto.ErrMissingExtension {
t.Errorf("got %v, expected ErrMissingExtension", e)
}
if _, err := proto.GetExtension(msg, pb.E_X215); err == nil {
t.Error("expected bad extension error, got nil")
}
if err := proto.SetExtension(msg, pb.E_X215, 12); err == nil {
t.Error("expected extension err")
}
if err := proto.SetExtension(msg, pb.E_Ext_More, 12); err == nil {
t.Error("expected some sort of type mismatch error, got nil")
}
}
func TestNilExtension(t *testing.T) {
msg := &pb.MyMessage{
Count: proto.Int32(1),
}
if err := proto.SetExtension(msg, pb.E_Ext_Text, proto.String("hello")); err != nil {
t.Fatal(err)
}
if err := proto.SetExtension(msg, pb.E_Ext_More, (*pb.Ext)(nil)); err == nil {
t.Error("expected SetExtension to fail due to a nil extension")
} else if want := "proto: SetExtension called with nil value of type *testdata.Ext"; err.Error() != want {
t.Errorf("expected error %v, got %v", want, err)
}
// Note: if the behavior of Marshal is ever changed to ignore nil extensions, update
// this test to verify that E_Ext_Text is properly propagated through marshal->unmarshal.
}
func TestMarshalUnmarshalRepeatedExtension(t *testing.T) {
// Add a repeated extension to the result.
tests := []struct {
name string
ext []*pb.ComplexExtension
}{
{
"two fields",
[]*pb.ComplexExtension{
{First: proto.Int32(7)},
{Second: proto.Int32(11)},
},
},
{
"repeated field",
[]*pb.ComplexExtension{
{Third: []int32{1000}},
{Third: []int32{2000}},
},
},
{
"two fields and repeated field",
[]*pb.ComplexExtension{
{Third: []int32{1000}},
{First: proto.Int32(9)},
{Second: proto.Int32(21)},
{Third: []int32{2000}},
},
},
}
for _, test := range tests {
// Marshal message with a repeated extension.
msg1 := new(pb.OtherMessage)
err := proto.SetExtension(msg1, pb.E_RComplex, test.ext)
if err != nil {
t.Fatalf("[%s] Error setting extension: %v", test.name, err)
}
b, err := proto.Marshal(msg1)
if err != nil {
t.Fatalf("[%s] Error marshaling message: %v", test.name, err)
}
// Unmarshal and read the merged proto.
msg2 := new(pb.OtherMessage)
err = proto.Unmarshal(b, msg2)
if err != nil {
t.Fatalf("[%s] Error unmarshaling message: %v", test.name, err)
}
e, err := proto.GetExtension(msg2, pb.E_RComplex)
if err != nil {
t.Fatalf("[%s] Error getting extension: %v", test.name, err)
}
ext := e.([]*pb.ComplexExtension)
if ext == nil {
t.Fatalf("[%s] Invalid extension", test.name)
}
if !reflect.DeepEqual(ext, test.ext) {
t.Errorf("[%s] Wrong value for ComplexExtension: got: %v want: %v\n", test.name, ext, test.ext)
}
}
}
func TestUnmarshalRepeatingNonRepeatedExtension(t *testing.T) {
// We may see multiple instances of the same extension in the wire
// format. For example, the proto compiler may encode custom options in
// this way. Here, we verify that we merge the extensions together.
tests := []struct {
name string
ext []*pb.ComplexExtension
}{
{
"two fields",
[]*pb.ComplexExtension{
{First: proto.Int32(7)},
{Second: proto.Int32(11)},
},
},
{
"repeated field",
[]*pb.ComplexExtension{
{Third: []int32{1000}},
{Third: []int32{2000}},
},
},
{
"two fields and repeated field",
[]*pb.ComplexExtension{
{Third: []int32{1000}},
{First: proto.Int32(9)},
{Second: proto.Int32(21)},
{Third: []int32{2000}},
},
},
}
for _, test := range tests {
var buf bytes.Buffer
var want pb.ComplexExtension
// Generate a serialized representation of a repeated extension
// by catenating bytes together.
for i, e := range test.ext {
// Merge to create the wanted proto.
proto.Merge(&want, e)
// serialize the message
msg := new(pb.OtherMessage)
err := proto.SetExtension(msg, pb.E_Complex, e)
if err != nil {
t.Fatalf("[%s] Error setting extension %d: %v", test.name, i, err)
}
b, err := proto.Marshal(msg)
if err != nil {
t.Fatalf("[%s] Error marshaling message %d: %v", test.name, i, err)
}
buf.Write(b)
}
// Unmarshal and read the merged proto.
msg2 := new(pb.OtherMessage)
err := proto.Unmarshal(buf.Bytes(), msg2)
if err != nil {
t.Fatalf("[%s] Error unmarshaling message: %v", test.name, err)
}
e, err := proto.GetExtension(msg2, pb.E_Complex)
if err != nil {
t.Fatalf("[%s] Error getting extension: %v", test.name, err)
}
ext := e.(*pb.ComplexExtension)
if ext == nil {
t.Fatalf("[%s] Invalid extension", test.name)
}
if !reflect.DeepEqual(*ext, want) {
t.Errorf("[%s] Wrong value for ComplexExtension: got: %s want: %s\n", test.name, ext, want)
}
}
}
func TestClearAllExtensions(t *testing.T) {
// unregistered extension
desc := &proto.ExtensionDesc{
ExtendedType: (*pb.MyMessage)(nil),
ExtensionType: (*bool)(nil),
Field: 101010100,
Name: "emptyextension",
Tag: "varint,0,opt",
}
m := &pb.MyMessage{}
if proto.HasExtension(m, desc) {
t.Errorf("proto.HasExtension(%s): got true, want false", proto.MarshalTextString(m))
}
if err := proto.SetExtension(m, desc, proto.Bool(true)); err != nil {
t.Errorf("proto.SetExtension(m, desc, true): got error %q, want nil", err)
}
if !proto.HasExtension(m, desc) {
t.Errorf("proto.HasExtension(%s): got false, want true", proto.MarshalTextString(m))
}
proto.ClearAllExtensions(m)
if proto.HasExtension(m, desc) {
t.Errorf("proto.HasExtension(%s): got true, want false", proto.MarshalTextString(m))
}
}
func TestMarshalRace(t *testing.T) {
// unregistered extension
desc := &proto.ExtensionDesc{
ExtendedType: (*pb.MyMessage)(nil),
ExtensionType: (*bool)(nil),
Field: 101010100,
Name: "emptyextension",
Tag: "varint,0,opt",
}
m := &pb.MyMessage{Count: proto.Int32(4)}
if err := proto.SetExtension(m, desc, proto.Bool(true)); err != nil {
t.Errorf("proto.SetExtension(m, desc, true): got error %q, want nil", err)
}
var g errgroup.Group
for n := 3; n > 0; n-- {
g.Go(func() error {
_, err := proto.Marshal(m)
return err
})
}
if err := g.Wait(); err != nil {
t.Fatal(err)
}
}