207 lines
6.6 KiB
Go
207 lines
6.6 KiB
Go
// Go support for Protocol Buffers - Google's data interchange format
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//
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// Copyright 2010 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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// Test that we can use protocol buffers that use extensions.
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package testdata
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import (
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"bytes"
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"regexp"
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"testing"
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"github.com/golang/protobuf/proto"
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base "github.com/golang/protobuf/protoc-gen-go/testdata/extension_base"
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user "github.com/golang/protobuf/protoc-gen-go/testdata/extension_user"
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)
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func TestSingleFieldExtension(t *testing.T) {
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bm := &base.BaseMessage{
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Height: proto.Int32(178),
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}
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// Use extension within scope of another type.
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vol := proto.Uint32(11)
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err := proto.SetExtension(bm, user.E_LoudMessage_Volume, vol)
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if err != nil {
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t.Fatal("Failed setting extension:", err)
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}
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buf, err := proto.Marshal(bm)
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if err != nil {
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t.Fatal("Failed encoding message with extension:", err)
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}
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bm_new := new(base.BaseMessage)
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if err := proto.Unmarshal(buf, bm_new); err != nil {
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t.Fatal("Failed decoding message with extension:", err)
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}
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if !proto.HasExtension(bm_new, user.E_LoudMessage_Volume) {
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t.Fatal("Decoded message didn't contain extension.")
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}
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vol_out, err := proto.GetExtension(bm_new, user.E_LoudMessage_Volume)
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if err != nil {
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t.Fatal("Failed getting extension:", err)
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}
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if v := vol_out.(*uint32); *v != *vol {
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t.Errorf("vol_out = %v, expected %v", *v, *vol)
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}
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proto.ClearExtension(bm_new, user.E_LoudMessage_Volume)
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if proto.HasExtension(bm_new, user.E_LoudMessage_Volume) {
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t.Fatal("Failed clearing extension.")
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}
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}
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func TestMessageExtension(t *testing.T) {
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bm := &base.BaseMessage{
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Height: proto.Int32(179),
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}
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// Use extension that is itself a message.
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um := &user.UserMessage{
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Name: proto.String("Dave"),
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Rank: proto.String("Major"),
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}
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err := proto.SetExtension(bm, user.E_LoginMessage_UserMessage, um)
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if err != nil {
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t.Fatal("Failed setting extension:", err)
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}
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buf, err := proto.Marshal(bm)
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if err != nil {
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t.Fatal("Failed encoding message with extension:", err)
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}
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bm_new := new(base.BaseMessage)
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if err := proto.Unmarshal(buf, bm_new); err != nil {
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t.Fatal("Failed decoding message with extension:", err)
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}
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if !proto.HasExtension(bm_new, user.E_LoginMessage_UserMessage) {
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t.Fatal("Decoded message didn't contain extension.")
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}
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um_out, err := proto.GetExtension(bm_new, user.E_LoginMessage_UserMessage)
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if err != nil {
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t.Fatal("Failed getting extension:", err)
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}
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if n := um_out.(*user.UserMessage).Name; *n != *um.Name {
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t.Errorf("um_out.Name = %q, expected %q", *n, *um.Name)
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}
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if r := um_out.(*user.UserMessage).Rank; *r != *um.Rank {
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t.Errorf("um_out.Rank = %q, expected %q", *r, *um.Rank)
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}
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proto.ClearExtension(bm_new, user.E_LoginMessage_UserMessage)
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if proto.HasExtension(bm_new, user.E_LoginMessage_UserMessage) {
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t.Fatal("Failed clearing extension.")
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}
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}
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func TestTopLevelExtension(t *testing.T) {
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bm := &base.BaseMessage{
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Height: proto.Int32(179),
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}
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width := proto.Int32(17)
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err := proto.SetExtension(bm, user.E_Width, width)
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if err != nil {
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t.Fatal("Failed setting extension:", err)
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}
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buf, err := proto.Marshal(bm)
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if err != nil {
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t.Fatal("Failed encoding message with extension:", err)
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}
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bm_new := new(base.BaseMessage)
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if err := proto.Unmarshal(buf, bm_new); err != nil {
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t.Fatal("Failed decoding message with extension:", err)
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}
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if !proto.HasExtension(bm_new, user.E_Width) {
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t.Fatal("Decoded message didn't contain extension.")
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}
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width_out, err := proto.GetExtension(bm_new, user.E_Width)
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if err != nil {
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t.Fatal("Failed getting extension:", err)
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}
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if w := width_out.(*int32); *w != *width {
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t.Errorf("width_out = %v, expected %v", *w, *width)
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}
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proto.ClearExtension(bm_new, user.E_Width)
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if proto.HasExtension(bm_new, user.E_Width) {
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t.Fatal("Failed clearing extension.")
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}
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}
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func TestMessageSetWireFormat(t *testing.T) {
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osm := new(base.OldStyleMessage)
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osp := &user.OldStyleParcel{
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Name: proto.String("Dave"),
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Height: proto.Int32(178),
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}
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err := proto.SetExtension(osm, user.E_OldStyleParcel_MessageSetExtension, osp)
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if err != nil {
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t.Fatal("Failed setting extension:", err)
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}
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buf, err := proto.Marshal(osm)
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if err != nil {
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t.Fatal("Failed encoding message:", err)
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}
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// Data generated from Python implementation.
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expected := []byte{
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11, 16, 209, 15, 26, 9, 10, 4, 68, 97, 118, 101, 16, 178, 1, 12,
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}
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if !bytes.Equal(expected, buf) {
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t.Errorf("Encoding mismatch.\nwant %+v\n got %+v", expected, buf)
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}
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// Check that it is restored correctly.
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osm = new(base.OldStyleMessage)
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if err := proto.Unmarshal(buf, osm); err != nil {
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t.Fatal("Failed decoding message:", err)
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}
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osp_out, err := proto.GetExtension(osm, user.E_OldStyleParcel_MessageSetExtension)
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if err != nil {
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t.Fatal("Failed getting extension:", err)
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}
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osp = osp_out.(*user.OldStyleParcel)
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if *osp.Name != "Dave" || *osp.Height != 178 {
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t.Errorf("Retrieved extension from decoded message is not correct: %+v", osp)
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}
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}
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func main() {
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// simpler than rigging up gotest
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testing.Main(regexp.MatchString, []testing.InternalTest{
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{"TestSingleFieldExtension", TestSingleFieldExtension},
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{"TestMessageExtension", TestMessageExtension},
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{"TestTopLevelExtension", TestTopLevelExtension},
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},
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[]testing.InternalBenchmark{},
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[]testing.InternalExample{})
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}
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