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vendor/github.com/golang/protobuf/proto/proto3_test.go

@@ -0,0 +1,135 @@
+// 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 (
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+	pb "github.com/golang/protobuf/proto/proto3_proto"
+	tpb "github.com/golang/protobuf/proto/testdata"
+)
+
+func TestProto3ZeroValues(t *testing.T) {
+	tests := []struct {
+		desc string
+		m    proto.Message
+	}{
+		{"zero message", &pb.Message{}},
+		{"empty bytes field", &pb.Message{Data: []byte{}}},
+	}
+	for _, test := range tests {
+		b, err := proto.Marshal(test.m)
+		if err != nil {
+			t.Errorf("%s: proto.Marshal: %v", test.desc, err)
+			continue
+		}
+		if len(b) > 0 {
+			t.Errorf("%s: Encoding is non-empty: %q", test.desc, b)
+		}
+	}
+}
+
+func TestRoundTripProto3(t *testing.T) {
+	m := &pb.Message{
+		Name:         "David",          // (2 | 1<<3): 0x0a 0x05 "David"
+		Hilarity:     pb.Message_PUNS,  // (0 | 2<<3): 0x10 0x01
+		HeightInCm:   178,              // (0 | 3<<3): 0x18 0xb2 0x01
+		Data:         []byte("roboto"), // (2 | 4<<3): 0x20 0x06 "roboto"
+		ResultCount:  47,               // (0 | 7<<3): 0x38 0x2f
+		TrueScotsman: true,             // (0 | 8<<3): 0x40 0x01
+		Score:        8.1,              // (5 | 9<<3): 0x4d <8.1>
+
+		Key: []uint64{1, 0xdeadbeef},
+		Nested: &pb.Nested{
+			Bunny: "Monty",
+		},
+	}
+	t.Logf(" m: %v", m)
+
+	b, err := proto.Marshal(m)
+	if err != nil {
+		t.Fatalf("proto.Marshal: %v", err)
+	}
+	t.Logf(" b: %q", b)
+
+	m2 := new(pb.Message)
+	if err := proto.Unmarshal(b, m2); err != nil {
+		t.Fatalf("proto.Unmarshal: %v", err)
+	}
+	t.Logf("m2: %v", m2)
+
+	if !proto.Equal(m, m2) {
+		t.Errorf("proto.Equal returned false:\n m: %v\nm2: %v", m, m2)
+	}
+}
+
+func TestGettersForBasicTypesExist(t *testing.T) {
+	var m pb.Message
+	if got := m.GetNested().GetBunny(); got != "" {
+		t.Errorf("m.GetNested().GetBunny() = %q, want empty string", got)
+	}
+	if got := m.GetNested().GetCute(); got {
+		t.Errorf("m.GetNested().GetCute() = %t, want false", got)
+	}
+}
+
+func TestProto3SetDefaults(t *testing.T) {
+	in := &pb.Message{
+		Terrain: map[string]*pb.Nested{
+			"meadow": new(pb.Nested),
+		},
+		Proto2Field: new(tpb.SubDefaults),
+		Proto2Value: map[string]*tpb.SubDefaults{
+			"badlands": new(tpb.SubDefaults),
+		},
+	}
+
+	got := proto.Clone(in).(*pb.Message)
+	proto.SetDefaults(got)
+
+	// There are no defaults in proto3.  Everything should be the zero value, but
+	// we need to remember to set defaults for nested proto2 messages.
+	want := &pb.Message{
+		Terrain: map[string]*pb.Nested{
+			"meadow": new(pb.Nested),
+		},
+		Proto2Field: &tpb.SubDefaults{N: proto.Int64(7)},
+		Proto2Value: map[string]*tpb.SubDefaults{
+			"badlands": &tpb.SubDefaults{N: proto.Int64(7)},
+		},
+	}
+
+	if !proto.Equal(got, want) {
+		t.Errorf("with in = %v\nproto.SetDefaults(in) =>\ngot %v\nwant %v", in, got, want)
+	}
+}