protobuf-go/proto/extension_test.go
Joe Tsai 8e9d5f6e8a internal/protolegacy: add stub v1 proto package for testing purposes
The protolegacy package is a minimal version of the v1 proto package.
This allows us to use this stub version as the dependency for
internal/testprotos/legacy packages and avoid a dependency
on the real v1 proto package.

The implementation of most v1 functionality will panic if called.
This way, we know if we the v2 code depends on one of those
unimplemented functions.

Updates golang/protobuf#962

Change-Id: I20b4091706fd456e4b01ae0931cce30a872639b0
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/199297
Reviewed-by: Damien Neil <dneil@google.com>
2019-10-05 23:12:32 +00:00

69 lines
2.3 KiB
Go

// 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,
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.TypeDescriptor().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)
}
}
}