blob: ce3a14266740f8e85e24483a12bb186c9f14d95e [file] [log] [blame]
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style.
// license that can be found in the LICENSE file.
package proto_test
import (
"fmt"
"testing"
"github.com/google/go-cmp/cmp"
"google.golang.org/protobuf/proto"
pref "google.golang.org/protobuf/reflect/protoreflect"
"google.golang.org/protobuf/runtime/protoimpl"
legacy1pb "google.golang.org/protobuf/internal/testprotos/legacy/proto2.v0.0.0-20160225-2fc053c5"
testpb "google.golang.org/protobuf/internal/testprotos/test"
)
func TestExtensionFuncs(t *testing.T) {
for _, test := range []struct {
message proto.Message
ext pref.ExtensionType
wantDefault interface{}
value interface{}
}{
{
message: &testpb.TestAllExtensions{},
ext: testpb.E_OptionalInt32Extension,
wantDefault: int32(0),
value: int32(1),
},
{
message: &testpb.TestAllExtensions{},
ext: testpb.E_RepeatedStringExtension,
// TODO: Represent repeated extension fields as []T.
// https://github.com/golang/protobuf/issues/901
wantDefault: (*[]string)(nil),
value: &[]string{"a", "b", "c"},
},
{
message: protoimpl.X.MessageOf(&legacy1pb.Message{}).Interface(),
ext: legacy1pb.E_Message_ExtensionOptionalBool,
wantDefault: false,
value: true,
},
} {
desc := fmt.Sprintf("Extension %v, value %v", test.ext.Descriptor().FullName(), test.value)
if proto.HasExtension(test.message, test.ext) {
t.Errorf("%v:\nbefore setting extension HasExtension(...) = true, want false", desc)
}
got := proto.GetExtension(test.message, test.ext)
if d := cmp.Diff(test.wantDefault, got); d != "" {
t.Errorf("%v:\nbefore setting extension GetExtension(...) returns unexpected value (-want,+got):\n%v", desc, d)
}
proto.SetExtension(test.message, test.ext, test.value)
if !proto.HasExtension(test.message, test.ext) {
t.Errorf("%v:\nafter setting extension HasExtension(...) = false, want true", desc)
}
got = proto.GetExtension(test.message, test.ext)
if d := cmp.Diff(test.value, got); d != "" {
t.Errorf("%v:\nafter setting extension GetExtension(...) returns unexpected value (-want,+got):\n%v", desc, d)
}
proto.ClearExtension(test.message, test.ext)
if proto.HasExtension(test.message, test.ext) {
t.Errorf("%v:\nafter clearing extension HasExtension(...) = true, want false", desc)
}
}
}