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125 lines
4 KiB
Go
125 lines
4 KiB
Go
// Go support for Protocol Buffers - Google's data interchange format
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//
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// Copyright 2014 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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pb "github.com/golang/protobuf/proto/proto3_proto"
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tpb "github.com/golang/protobuf/proto/testdata"
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)
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func TestProto3ZeroValues(t *testing.T) {
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tests := []struct {
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desc string
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m proto.Message
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}{
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{"zero message", &pb.Message{}},
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{"empty bytes field", &pb.Message{Data: []byte{}}},
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}
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for _, test := range tests {
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b, err := proto.Marshal(test.m)
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if err != nil {
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t.Errorf("%s: proto.Marshal: %v", test.desc, err)
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continue
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}
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if len(b) > 0 {
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t.Errorf("%s: Encoding is non-empty: %q", test.desc, b)
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}
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}
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}
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func TestRoundTripProto3(t *testing.T) {
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m := &pb.Message{
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Name: "David", // (2 | 1<<3): 0x0a 0x05 "David"
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Hilarity: pb.Message_PUNS, // (0 | 2<<3): 0x10 0x01
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HeightInCm: 178, // (0 | 3<<3): 0x18 0xb2 0x01
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Data: []byte("roboto"), // (2 | 4<<3): 0x20 0x06 "roboto"
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ResultCount: 47, // (0 | 7<<3): 0x38 0x2f
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TrueScotsman: true, // (0 | 8<<3): 0x40 0x01
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Score: 8.1, // (5 | 9<<3): 0x4d <8.1>
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Key: []uint64{1, 0xdeadbeef},
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Nested: &pb.Nested{
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Bunny: "Monty",
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},
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}
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t.Logf(" m: %v", m)
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b, err := proto.Marshal(m)
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if err != nil {
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t.Fatalf("proto.Marshal: %v", err)
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}
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t.Logf(" b: %q", b)
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m2 := new(pb.Message)
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if err := proto.Unmarshal(b, m2); err != nil {
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t.Fatalf("proto.Unmarshal: %v", err)
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}
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t.Logf("m2: %v", m2)
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if !proto.Equal(m, m2) {
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t.Errorf("proto.Equal returned false:\n m: %v\nm2: %v", m, m2)
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}
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}
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func TestProto3SetDefaults(t *testing.T) {
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in := &pb.Message{
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Terrain: map[string]*pb.Nested{
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"meadow": new(pb.Nested),
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},
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Proto2Field: new(tpb.SubDefaults),
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Proto2Value: map[string]*tpb.SubDefaults{
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"badlands": new(tpb.SubDefaults),
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},
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}
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got := proto.Clone(in).(*pb.Message)
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proto.SetDefaults(got)
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// There are no defaults in proto3. Everything should be the zero value, but
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// we need to remember to set defaults for nested proto2 messages.
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want := &pb.Message{
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Terrain: map[string]*pb.Nested{
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"meadow": new(pb.Nested),
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},
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Proto2Field: &tpb.SubDefaults{N: proto.Int64(7)},
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Proto2Value: map[string]*tpb.SubDefaults{
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"badlands": &tpb.SubDefaults{N: proto.Int64(7)},
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},
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}
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if !proto.Equal(got, want) {
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t.Errorf("with in = %v\nproto.SetDefaults(in) =>\ngot %v\nwant %v", in, got, want)
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}
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}
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