func TestMerge(t *testing.T) {
for _, m := range mergeTests {
got := proto.Clone(m.dst)
proto.Merge(got, m.src)
if !proto.Equal(got, m.want) {
t.Errorf("Merge(%v, %v)\n got %v\nwant %v\n", m.dst, m.src, got, m.want)
}
}
}
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)
}
}
}