300 lines
7.8 KiB
Go
300 lines
7.8 KiB
Go
// Go support for Protocol Buffers - Google's data interchange format
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//
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// Copyright 2011 The Go Authors. All rights reserved.
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// https://github.com/golang/protobuf
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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package proto_test
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import (
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"testing"
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"github.com/golang/protobuf/proto"
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proto3pb "github.com/golang/protobuf/proto/proto3_proto"
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pb "github.com/golang/protobuf/proto/testdata"
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)
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var cloneTestMessage = &pb.MyMessage{
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Count: proto.Int32(42),
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Name: proto.String("Dave"),
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Pet: []string{"bunny", "kitty", "horsey"},
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Inner: &pb.InnerMessage{
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Host: proto.String("niles"),
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Port: proto.Int32(9099),
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Connected: proto.Bool(true),
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},
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Others: []*pb.OtherMessage{
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{
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Value: []byte("some bytes"),
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},
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},
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Somegroup: &pb.MyMessage_SomeGroup{
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GroupField: proto.Int32(6),
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},
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RepBytes: [][]byte{[]byte("sham"), []byte("wow")},
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}
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func init() {
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ext := &pb.Ext{
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Data: proto.String("extension"),
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}
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if err := proto.SetExtension(cloneTestMessage, pb.E_Ext_More, ext); err != nil {
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panic("SetExtension: " + err.Error())
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}
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}
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func TestClone(t *testing.T) {
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m := proto.Clone(cloneTestMessage).(*pb.MyMessage)
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if !proto.Equal(m, cloneTestMessage) {
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t.Errorf("Clone(%v) = %v", cloneTestMessage, m)
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}
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// Verify it was a deep copy.
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*m.Inner.Port++
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if proto.Equal(m, cloneTestMessage) {
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t.Error("Mutating clone changed the original")
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}
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// Byte fields and repeated fields should be copied.
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if &m.Pet[0] == &cloneTestMessage.Pet[0] {
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t.Error("Pet: repeated field not copied")
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}
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if &m.Others[0] == &cloneTestMessage.Others[0] {
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t.Error("Others: repeated field not copied")
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}
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if &m.Others[0].Value[0] == &cloneTestMessage.Others[0].Value[0] {
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t.Error("Others[0].Value: bytes field not copied")
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}
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if &m.RepBytes[0] == &cloneTestMessage.RepBytes[0] {
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t.Error("RepBytes: repeated field not copied")
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}
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if &m.RepBytes[0][0] == &cloneTestMessage.RepBytes[0][0] {
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t.Error("RepBytes[0]: bytes field not copied")
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}
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}
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func TestCloneNil(t *testing.T) {
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var m *pb.MyMessage
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if c := proto.Clone(m); !proto.Equal(m, c) {
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t.Errorf("Clone(%v) = %v", m, c)
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}
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}
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var mergeTests = []struct {
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src, dst, want proto.Message
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}{
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{
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src: &pb.MyMessage{
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Count: proto.Int32(42),
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},
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dst: &pb.MyMessage{
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Name: proto.String("Dave"),
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},
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want: &pb.MyMessage{
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Count: proto.Int32(42),
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Name: proto.String("Dave"),
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},
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},
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{
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src: &pb.MyMessage{
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Inner: &pb.InnerMessage{
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Host: proto.String("hey"),
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Connected: proto.Bool(true),
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},
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Pet: []string{"horsey"},
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Others: []*pb.OtherMessage{
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{
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Value: []byte("some bytes"),
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},
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},
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},
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dst: &pb.MyMessage{
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Inner: &pb.InnerMessage{
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Host: proto.String("niles"),
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Port: proto.Int32(9099),
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},
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Pet: []string{"bunny", "kitty"},
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Others: []*pb.OtherMessage{
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{
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Key: proto.Int64(31415926535),
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},
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{
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// Explicitly test a src=nil field
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Inner: nil,
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},
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},
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},
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want: &pb.MyMessage{
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Inner: &pb.InnerMessage{
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Host: proto.String("hey"),
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Connected: proto.Bool(true),
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Port: proto.Int32(9099),
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},
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Pet: []string{"bunny", "kitty", "horsey"},
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Others: []*pb.OtherMessage{
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{
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Key: proto.Int64(31415926535),
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},
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{},
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{
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Value: []byte("some bytes"),
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},
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},
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},
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},
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{
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src: &pb.MyMessage{
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RepBytes: [][]byte{[]byte("wow")},
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},
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dst: &pb.MyMessage{
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Somegroup: &pb.MyMessage_SomeGroup{
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GroupField: proto.Int32(6),
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},
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RepBytes: [][]byte{[]byte("sham")},
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},
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want: &pb.MyMessage{
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Somegroup: &pb.MyMessage_SomeGroup{
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GroupField: proto.Int32(6),
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},
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RepBytes: [][]byte{[]byte("sham"), []byte("wow")},
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},
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},
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// Check that a scalar bytes field replaces rather than appends.
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{
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src: &pb.OtherMessage{Value: []byte("foo")},
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dst: &pb.OtherMessage{Value: []byte("bar")},
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want: &pb.OtherMessage{Value: []byte("foo")},
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},
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{
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src: &pb.MessageWithMap{
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NameMapping: map[int32]string{6: "Nigel"},
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MsgMapping: map[int64]*pb.FloatingPoint{
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0x4001: &pb.FloatingPoint{F: proto.Float64(2.0)},
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0x4002: &pb.FloatingPoint{
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F: proto.Float64(2.0),
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},
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},
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ByteMapping: map[bool][]byte{true: []byte("wowsa")},
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},
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dst: &pb.MessageWithMap{
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NameMapping: map[int32]string{
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6: "Bruce", // should be overwritten
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7: "Andrew",
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},
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MsgMapping: map[int64]*pb.FloatingPoint{
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0x4002: &pb.FloatingPoint{
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F: proto.Float64(3.0),
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Exact: proto.Bool(true),
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}, // the entire message should be overwritten
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},
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},
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want: &pb.MessageWithMap{
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NameMapping: map[int32]string{
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6: "Nigel",
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7: "Andrew",
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},
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MsgMapping: map[int64]*pb.FloatingPoint{
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0x4001: &pb.FloatingPoint{F: proto.Float64(2.0)},
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0x4002: &pb.FloatingPoint{
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F: proto.Float64(2.0),
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},
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},
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ByteMapping: map[bool][]byte{true: []byte("wowsa")},
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},
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},
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// proto3 shouldn't merge zero values,
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// in the same way that proto2 shouldn't merge nils.
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{
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src: &proto3pb.Message{
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Name: "Aaron",
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Data: []byte(""), // zero value, but not nil
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},
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dst: &proto3pb.Message{
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HeightInCm: 176,
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Data: []byte("texas!"),
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},
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want: &proto3pb.Message{
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Name: "Aaron",
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HeightInCm: 176,
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Data: []byte("texas!"),
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},
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},
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// Oneof fields should merge by assignment.
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{
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src: &pb.Communique{
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Union: &pb.Communique_Number{41},
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},
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dst: &pb.Communique{
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Union: &pb.Communique_Name{"Bobby Tables"},
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},
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want: &pb.Communique{
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Union: &pb.Communique_Number{41},
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},
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},
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// Oneof nil is the same as not set.
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{
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src: &pb.Communique{},
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dst: &pb.Communique{
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Union: &pb.Communique_Name{"Bobby Tables"},
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},
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want: &pb.Communique{
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Union: &pb.Communique_Name{"Bobby Tables"},
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},
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},
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{
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src: &proto3pb.Message{
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Terrain: map[string]*proto3pb.Nested{
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"kay_a": &proto3pb.Nested{Cute: true}, // replace
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"kay_b": &proto3pb.Nested{Bunny: "rabbit"}, // insert
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},
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},
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dst: &proto3pb.Message{
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Terrain: map[string]*proto3pb.Nested{
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"kay_a": &proto3pb.Nested{Bunny: "lost"}, // replaced
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"kay_c": &proto3pb.Nested{Bunny: "bunny"}, // keep
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},
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},
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want: &proto3pb.Message{
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Terrain: map[string]*proto3pb.Nested{
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"kay_a": &proto3pb.Nested{Cute: true},
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"kay_b": &proto3pb.Nested{Bunny: "rabbit"},
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"kay_c": &proto3pb.Nested{Bunny: "bunny"},
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},
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},
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},
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}
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func TestMerge(t *testing.T) {
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for _, m := range mergeTests {
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got := proto.Clone(m.dst)
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proto.Merge(got, m.src)
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if !proto.Equal(got, m.want) {
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t.Errorf("Merge(%v, %v)\n got %v\nwant %v\n", m.dst, m.src, got, m.want)
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}
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}
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}
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