1// Copyright 2018 The Go Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style 3// license that can be found in the LICENSE file. 4 5package tag_test 6 7import ( 8 "reflect" 9 "testing" 10 11 "google.golang.org/protobuf/internal/encoding/tag" 12 fdesc "google.golang.org/protobuf/internal/filedesc" 13 "google.golang.org/protobuf/proto" 14 pdesc "google.golang.org/protobuf/reflect/protodesc" 15 pref "google.golang.org/protobuf/reflect/protoreflect" 16) 17 18func Test(t *testing.T) { 19 fd := new(fdesc.Field) 20 fd.L0.ParentFile = fdesc.SurrogateProto3 21 fd.L0.FullName = "foo_field" 22 fd.L1.Number = 1337 23 fd.L1.Cardinality = pref.Repeated 24 fd.L1.Kind = pref.BytesKind 25 fd.L1.Default = fdesc.DefaultValue(pref.ValueOf([]byte("hello, \xde\xad\xbe\xef\n")), nil) 26 27 // Marshal test. 28 gotTag := tag.Marshal(fd, "") 29 wantTag := `bytes,1337,rep,name=foo_field,json=fooField,proto3,def=hello, \336\255\276\357\n` 30 if gotTag != wantTag { 31 t.Errorf("Marshal() = `%v`, want `%v`", gotTag, wantTag) 32 } 33 34 // Unmarshal test. 35 gotFD := tag.Unmarshal(wantTag, reflect.TypeOf([]byte{}), nil) 36 wantFD := fd 37 if !proto.Equal(pdesc.ToFieldDescriptorProto(gotFD), pdesc.ToFieldDescriptorProto(wantFD)) { 38 t.Errorf("Umarshal() mismatch:\ngot %v\nwant %v", gotFD, wantFD) 39 } 40} 41