/
encode_test.go
1922 lines (1916 loc) · 45.1 KB
/
encode_test.go
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// 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 protojson_test
import (
"bytes"
"math"
"testing"
"github.com/google/go-cmp/cmp"
"google.golang.org/protobuf/encoding/protojson"
"google.golang.org/protobuf/internal/encoding/pack"
"google.golang.org/protobuf/internal/flags"
pimpl "google.golang.org/protobuf/internal/impl"
"google.golang.org/protobuf/proto"
preg "google.golang.org/protobuf/reflect/protoregistry"
"google.golang.org/protobuf/encoding/testprotos/pb2"
"google.golang.org/protobuf/encoding/testprotos/pb3"
"google.golang.org/protobuf/types/known/anypb"
"google.golang.org/protobuf/types/known/durationpb"
"google.golang.org/protobuf/types/known/emptypb"
"google.golang.org/protobuf/types/known/fieldmaskpb"
"google.golang.org/protobuf/types/known/structpb"
"google.golang.org/protobuf/types/known/timestamppb"
"google.golang.org/protobuf/types/known/wrapperspb"
)
func TestMarshal(t *testing.T) {
tests := []struct {
desc string
mo protojson.MarshalOptions
input proto.Message
want string
wantErr bool // TODO: Verify error message substring.
skip bool
}{{
desc: "proto2 optional scalars not set",
input: &pb2.Scalars{},
want: "{}",
}, {
desc: "proto3 scalars not set",
input: &pb3.Scalars{},
want: "{}",
}, {
desc: "proto2 optional scalars set to zero values",
input: &pb2.Scalars{
OptBool: proto.Bool(false),
OptInt32: proto.Int32(0),
OptInt64: proto.Int64(0),
OptUint32: proto.Uint32(0),
OptUint64: proto.Uint64(0),
OptSint32: proto.Int32(0),
OptSint64: proto.Int64(0),
OptFixed32: proto.Uint32(0),
OptFixed64: proto.Uint64(0),
OptSfixed32: proto.Int32(0),
OptSfixed64: proto.Int64(0),
OptFloat: proto.Float32(0),
OptDouble: proto.Float64(0),
OptBytes: []byte{},
OptString: proto.String(""),
},
want: `{
"optBool": false,
"optInt32": 0,
"optInt64": "0",
"optUint32": 0,
"optUint64": "0",
"optSint32": 0,
"optSint64": "0",
"optFixed32": 0,
"optFixed64": "0",
"optSfixed32": 0,
"optSfixed64": "0",
"optFloat": 0,
"optDouble": 0,
"optBytes": "",
"optString": ""
}`,
}, {
desc: "proto2 optional scalars set to some values",
input: &pb2.Scalars{
OptBool: proto.Bool(true),
OptInt32: proto.Int32(0xff),
OptInt64: proto.Int64(0xdeadbeef),
OptUint32: proto.Uint32(47),
OptUint64: proto.Uint64(0xdeadbeef),
OptSint32: proto.Int32(-1001),
OptSint64: proto.Int64(-0xffff),
OptFixed64: proto.Uint64(64),
OptSfixed32: proto.Int32(-32),
OptFloat: proto.Float32(1.02),
OptDouble: proto.Float64(1.234),
OptBytes: []byte("谷歌"),
OptString: proto.String("谷歌"),
},
want: `{
"optBool": true,
"optInt32": 255,
"optInt64": "3735928559",
"optUint32": 47,
"optUint64": "3735928559",
"optSint32": -1001,
"optSint64": "-65535",
"optFixed64": "64",
"optSfixed32": -32,
"optFloat": 1.02,
"optDouble": 1.234,
"optBytes": "6LC35q2M",
"optString": "谷歌"
}`,
}, {
desc: "string",
input: &pb3.Scalars{
SString: "谷歌",
},
want: `{
"sString": "谷歌"
}`,
}, {
desc: "string with invalid UTF8",
input: &pb3.Scalars{
SString: "abc\xff",
},
wantErr: true,
}, {
desc: "float nan",
input: &pb3.Scalars{
SFloat: float32(math.NaN()),
},
want: `{
"sFloat": "NaN"
}`,
}, {
desc: "float positive infinity",
input: &pb3.Scalars{
SFloat: float32(math.Inf(1)),
},
want: `{
"sFloat": "Infinity"
}`,
}, {
desc: "float negative infinity",
input: &pb3.Scalars{
SFloat: float32(math.Inf(-1)),
},
want: `{
"sFloat": "-Infinity"
}`,
}, {
desc: "double nan",
input: &pb3.Scalars{
SDouble: math.NaN(),
},
want: `{
"sDouble": "NaN"
}`,
}, {
desc: "double positive infinity",
input: &pb3.Scalars{
SDouble: math.Inf(1),
},
want: `{
"sDouble": "Infinity"
}`,
}, {
desc: "double negative infinity",
input: &pb3.Scalars{
SDouble: math.Inf(-1),
},
want: `{
"sDouble": "-Infinity"
}`,
}, {
desc: "proto2 enum not set",
input: &pb2.Enums{},
want: "{}",
}, {
desc: "proto2 enum set to zero value",
input: &pb2.Enums{
OptEnum: pb2.Enum(0).Enum(),
OptNestedEnum: pb2.Enums_NestedEnum(0).Enum(),
},
want: `{
"optEnum": 0,
"optNestedEnum": 0
}`,
}, {
desc: "proto2 enum",
input: &pb2.Enums{
OptEnum: pb2.Enum_ONE.Enum(),
OptNestedEnum: pb2.Enums_UNO.Enum(),
},
want: `{
"optEnum": "ONE",
"optNestedEnum": "UNO"
}`,
}, {
desc: "proto2 enum set to numeric values",
input: &pb2.Enums{
OptEnum: pb2.Enum(2).Enum(),
OptNestedEnum: pb2.Enums_NestedEnum(2).Enum(),
},
want: `{
"optEnum": "TWO",
"optNestedEnum": "DOS"
}`,
}, {
desc: "proto2 enum set to unnamed numeric values",
input: &pb2.Enums{
OptEnum: pb2.Enum(101).Enum(),
OptNestedEnum: pb2.Enums_NestedEnum(-101).Enum(),
},
want: `{
"optEnum": 101,
"optNestedEnum": -101
}`,
}, {
desc: "proto3 enum not set",
input: &pb3.Enums{},
want: "{}",
}, {
desc: "proto3 enum set to zero value",
input: &pb3.Enums{
SEnum: pb3.Enum_ZERO,
SNestedEnum: pb3.Enums_CERO,
},
want: "{}",
}, {
desc: "proto3 enum",
input: &pb3.Enums{
SEnum: pb3.Enum_ONE,
SNestedEnum: pb3.Enums_UNO,
},
want: `{
"sEnum": "ONE",
"sNestedEnum": "UNO"
}`,
}, {
desc: "proto3 enum set to numeric values",
input: &pb3.Enums{
SEnum: 2,
SNestedEnum: 2,
},
want: `{
"sEnum": "TWO",
"sNestedEnum": "DOS"
}`,
}, {
desc: "proto3 enum set to unnamed numeric values",
input: &pb3.Enums{
SEnum: -47,
SNestedEnum: 47,
},
want: `{
"sEnum": -47,
"sNestedEnum": 47
}`,
}, {
desc: "proto2 nested message not set",
input: &pb2.Nests{},
want: "{}",
}, {
desc: "proto2 nested message set to empty",
input: &pb2.Nests{
OptNested: &pb2.Nested{},
Optgroup: &pb2.Nests_OptGroup{},
},
want: `{
"optNested": {},
"optgroup": {}
}`,
}, {
desc: "proto2 nested messages",
input: &pb2.Nests{
OptNested: &pb2.Nested{
OptString: proto.String("nested message"),
OptNested: &pb2.Nested{
OptString: proto.String("another nested message"),
},
},
},
want: `{
"optNested": {
"optString": "nested message",
"optNested": {
"optString": "another nested message"
}
}
}`,
}, {
desc: "proto2 groups",
input: &pb2.Nests{
Optgroup: &pb2.Nests_OptGroup{
OptString: proto.String("inside a group"),
OptNested: &pb2.Nested{
OptString: proto.String("nested message inside a group"),
},
Optnestedgroup: &pb2.Nests_OptGroup_OptNestedGroup{
OptFixed32: proto.Uint32(47),
},
},
},
want: `{
"optgroup": {
"optString": "inside a group",
"optNested": {
"optString": "nested message inside a group"
},
"optnestedgroup": {
"optFixed32": 47
}
}
}`,
}, {
desc: "proto3 nested message not set",
input: &pb3.Nests{},
want: "{}",
}, {
desc: "proto3 nested message set to empty",
input: &pb3.Nests{
SNested: &pb3.Nested{},
},
want: `{
"sNested": {}
}`,
}, {
desc: "proto3 nested message",
input: &pb3.Nests{
SNested: &pb3.Nested{
SString: "nested message",
SNested: &pb3.Nested{
SString: "another nested message",
},
},
},
want: `{
"sNested": {
"sString": "nested message",
"sNested": {
"sString": "another nested message"
}
}
}`,
}, {
desc: "oneof not set",
input: &pb3.Oneofs{},
want: "{}",
}, {
desc: "oneof set to empty string",
input: &pb3.Oneofs{
Union: &pb3.Oneofs_OneofString{},
},
want: `{
"oneofString": ""
}`,
}, {
desc: "oneof set to string",
input: &pb3.Oneofs{
Union: &pb3.Oneofs_OneofString{
OneofString: "hello",
},
},
want: `{
"oneofString": "hello"
}`,
}, {
desc: "oneof set to enum",
input: &pb3.Oneofs{
Union: &pb3.Oneofs_OneofEnum{
OneofEnum: pb3.Enum_ZERO,
},
},
want: `{
"oneofEnum": "ZERO"
}`,
}, {
desc: "oneof set to empty message",
input: &pb3.Oneofs{
Union: &pb3.Oneofs_OneofNested{
OneofNested: &pb3.Nested{},
},
},
want: `{
"oneofNested": {}
}`,
}, {
desc: "oneof set to message",
input: &pb3.Oneofs{
Union: &pb3.Oneofs_OneofNested{
OneofNested: &pb3.Nested{
SString: "nested message",
},
},
},
want: `{
"oneofNested": {
"sString": "nested message"
}
}`,
}, {
desc: "repeated fields not set",
input: &pb2.Repeats{},
want: "{}",
}, {
desc: "repeated fields set to empty slices",
input: &pb2.Repeats{
RptBool: []bool{},
RptInt32: []int32{},
RptInt64: []int64{},
RptUint32: []uint32{},
RptUint64: []uint64{},
RptFloat: []float32{},
RptDouble: []float64{},
RptBytes: [][]byte{},
},
want: "{}",
}, {
desc: "repeated fields set to some values",
input: &pb2.Repeats{
RptBool: []bool{true, false, true, true},
RptInt32: []int32{1, 6, 0, 0},
RptInt64: []int64{-64, 47},
RptUint32: []uint32{0xff, 0xffff},
RptUint64: []uint64{0xdeadbeef},
RptFloat: []float32{float32(math.NaN()), float32(math.Inf(1)), float32(math.Inf(-1)), 1.034},
RptDouble: []float64{math.NaN(), math.Inf(1), math.Inf(-1), 1.23e-308},
RptString: []string{"hello", "世界"},
RptBytes: [][]byte{
[]byte("hello"),
[]byte("\xe4\xb8\x96\xe7\x95\x8c"),
},
},
want: `{
"rptBool": [
true,
false,
true,
true
],
"rptInt32": [
1,
6,
0,
0
],
"rptInt64": [
"-64",
"47"
],
"rptUint32": [
255,
65535
],
"rptUint64": [
"3735928559"
],
"rptFloat": [
"NaN",
"Infinity",
"-Infinity",
1.034
],
"rptDouble": [
"NaN",
"Infinity",
"-Infinity",
1.23e-308
],
"rptString": [
"hello",
"世界"
],
"rptBytes": [
"aGVsbG8=",
"5LiW55WM"
]
}`,
}, {
desc: "repeated enums",
input: &pb2.Enums{
RptEnum: []pb2.Enum{pb2.Enum_ONE, 2, pb2.Enum_TEN, 42},
RptNestedEnum: []pb2.Enums_NestedEnum{2, 47, 10},
},
want: `{
"rptEnum": [
"ONE",
"TWO",
"TEN",
42
],
"rptNestedEnum": [
"DOS",
47,
"DIEZ"
]
}`,
}, {
desc: "repeated messages set to empty",
input: &pb2.Nests{
RptNested: []*pb2.Nested{},
Rptgroup: []*pb2.Nests_RptGroup{},
},
want: "{}",
}, {
desc: "repeated messages",
input: &pb2.Nests{
RptNested: []*pb2.Nested{
{
OptString: proto.String("repeat nested one"),
},
{
OptString: proto.String("repeat nested two"),
OptNested: &pb2.Nested{
OptString: proto.String("inside repeat nested two"),
},
},
{},
},
},
want: `{
"rptNested": [
{
"optString": "repeat nested one"
},
{
"optString": "repeat nested two",
"optNested": {
"optString": "inside repeat nested two"
}
},
{}
]
}`,
}, {
desc: "repeated messages contains nil value",
input: &pb2.Nests{
RptNested: []*pb2.Nested{nil, {}},
},
want: `{
"rptNested": [
{},
{}
]
}`,
}, {
desc: "repeated groups",
input: &pb2.Nests{
Rptgroup: []*pb2.Nests_RptGroup{
{
RptString: []string{"hello", "world"},
},
{},
nil,
},
},
want: `{
"rptgroup": [
{
"rptString": [
"hello",
"world"
]
},
{},
{}
]
}`,
}, {
desc: "map fields not set",
input: &pb3.Maps{},
want: "{}",
}, {
desc: "map fields set to empty",
input: &pb3.Maps{
Int32ToStr: map[int32]string{},
BoolToUint32: map[bool]uint32{},
Uint64ToEnum: map[uint64]pb3.Enum{},
StrToNested: map[string]*pb3.Nested{},
StrToOneofs: map[string]*pb3.Oneofs{},
},
want: "{}",
}, {
desc: "map fields 1",
input: &pb3.Maps{
BoolToUint32: map[bool]uint32{
true: 42,
false: 101,
},
},
want: `{
"boolToUint32": {
"false": 101,
"true": 42
}
}`,
}, {
desc: "map fields 2",
input: &pb3.Maps{
Int32ToStr: map[int32]string{
-101: "-101",
0xff: "0xff",
0: "zero",
},
},
want: `{
"int32ToStr": {
"-101": "-101",
"0": "zero",
"255": "0xff"
}
}`,
}, {
desc: "map fields 3",
input: &pb3.Maps{
Uint64ToEnum: map[uint64]pb3.Enum{
1: pb3.Enum_ONE,
2: pb3.Enum_TWO,
10: pb3.Enum_TEN,
47: 47,
},
},
want: `{
"uint64ToEnum": {
"1": "ONE",
"2": "TWO",
"10": "TEN",
"47": 47
}
}`,
}, {
desc: "map fields 4",
input: &pb3.Maps{
StrToNested: map[string]*pb3.Nested{
"nested": &pb3.Nested{
SString: "nested in a map",
},
},
},
want: `{
"strToNested": {
"nested": {
"sString": "nested in a map"
}
}
}`,
}, {
desc: "map fields 5",
input: &pb3.Maps{
StrToOneofs: map[string]*pb3.Oneofs{
"string": &pb3.Oneofs{
Union: &pb3.Oneofs_OneofString{
OneofString: "hello",
},
},
"nested": &pb3.Oneofs{
Union: &pb3.Oneofs_OneofNested{
OneofNested: &pb3.Nested{
SString: "nested oneof in map field value",
},
},
},
},
},
want: `{
"strToOneofs": {
"nested": {
"oneofNested": {
"sString": "nested oneof in map field value"
}
},
"string": {
"oneofString": "hello"
}
}
}`,
}, {
desc: "map field contains nil value",
input: &pb3.Maps{
StrToNested: map[string]*pb3.Nested{
"nil": nil,
},
},
want: `{
"strToNested": {
"nil": {}
}
}`,
}, {
desc: "required fields not set",
input: &pb2.Requireds{},
want: `{}`,
wantErr: true,
}, {
desc: "required fields partially set",
input: &pb2.Requireds{
ReqBool: proto.Bool(false),
ReqSfixed64: proto.Int64(0),
ReqDouble: proto.Float64(1.23),
ReqString: proto.String("hello"),
ReqEnum: pb2.Enum_ONE.Enum(),
},
want: `{
"reqBool": false,
"reqSfixed64": "0",
"reqDouble": 1.23,
"reqString": "hello",
"reqEnum": "ONE"
}`,
wantErr: true,
}, {
desc: "required fields not set with AllowPartial",
mo: protojson.MarshalOptions{AllowPartial: true},
input: &pb2.Requireds{
ReqBool: proto.Bool(false),
ReqSfixed64: proto.Int64(0),
ReqDouble: proto.Float64(1.23),
ReqString: proto.String("hello"),
ReqEnum: pb2.Enum_ONE.Enum(),
},
want: `{
"reqBool": false,
"reqSfixed64": "0",
"reqDouble": 1.23,
"reqString": "hello",
"reqEnum": "ONE"
}`,
}, {
desc: "required fields all set",
input: &pb2.Requireds{
ReqBool: proto.Bool(false),
ReqSfixed64: proto.Int64(0),
ReqDouble: proto.Float64(1.23),
ReqString: proto.String("hello"),
ReqEnum: pb2.Enum_ONE.Enum(),
ReqNested: &pb2.Nested{},
},
want: `{
"reqBool": false,
"reqSfixed64": "0",
"reqDouble": 1.23,
"reqString": "hello",
"reqEnum": "ONE",
"reqNested": {}
}`,
}, {
desc: "indirect required field",
input: &pb2.IndirectRequired{
OptNested: &pb2.NestedWithRequired{},
},
want: `{
"optNested": {}
}`,
wantErr: true,
}, {
desc: "indirect required field with AllowPartial",
mo: protojson.MarshalOptions{AllowPartial: true},
input: &pb2.IndirectRequired{
OptNested: &pb2.NestedWithRequired{},
},
want: `{
"optNested": {}
}`,
}, {
desc: "indirect required field in empty repeated",
input: &pb2.IndirectRequired{
RptNested: []*pb2.NestedWithRequired{},
},
want: `{}`,
}, {
desc: "indirect required field in repeated",
input: &pb2.IndirectRequired{
RptNested: []*pb2.NestedWithRequired{
&pb2.NestedWithRequired{},
},
},
want: `{
"rptNested": [
{}
]
}`,
wantErr: true,
}, {
desc: "indirect required field in repeated with AllowPartial",
mo: protojson.MarshalOptions{AllowPartial: true},
input: &pb2.IndirectRequired{
RptNested: []*pb2.NestedWithRequired{
&pb2.NestedWithRequired{},
},
},
want: `{
"rptNested": [
{}
]
}`,
}, {
desc: "indirect required field in empty map",
input: &pb2.IndirectRequired{
StrToNested: map[string]*pb2.NestedWithRequired{},
},
want: "{}",
}, {
desc: "indirect required field in map",
input: &pb2.IndirectRequired{
StrToNested: map[string]*pb2.NestedWithRequired{
"fail": &pb2.NestedWithRequired{},
},
},
want: `{
"strToNested": {
"fail": {}
}
}`,
wantErr: true,
}, {
desc: "indirect required field in map with AllowPartial",
mo: protojson.MarshalOptions{AllowPartial: true},
input: &pb2.IndirectRequired{
StrToNested: map[string]*pb2.NestedWithRequired{
"fail": &pb2.NestedWithRequired{},
},
},
want: `{
"strToNested": {
"fail": {}
}
}`,
}, {
desc: "indirect required field in oneof",
input: &pb2.IndirectRequired{
Union: &pb2.IndirectRequired_OneofNested{
OneofNested: &pb2.NestedWithRequired{},
},
},
want: `{
"oneofNested": {}
}`,
wantErr: true,
}, {
desc: "indirect required field in oneof with AllowPartial",
mo: protojson.MarshalOptions{AllowPartial: true},
input: &pb2.IndirectRequired{
Union: &pb2.IndirectRequired_OneofNested{
OneofNested: &pb2.NestedWithRequired{},
},
},
want: `{
"oneofNested": {}
}`,
}, {
desc: "unknown fields are ignored",
input: func() proto.Message {
m := &pb2.Scalars{
OptString: proto.String("no unknowns"),
}
m.ProtoReflect().SetUnknown(pack.Message{
pack.Tag{101, pack.BytesType}, pack.String("hello world"),
}.Marshal())
return m
}(),
want: `{
"optString": "no unknowns"
}`,
}, {
desc: "json_name",
input: &pb3.JSONNames{
SString: "json_name",
},
want: `{
"foo_bar": "json_name"
}`,
}, {
desc: "extensions of non-repeated fields",
input: func() proto.Message {
m := &pb2.Extensions{
OptString: proto.String("non-extension field"),
OptBool: proto.Bool(true),
OptInt32: proto.Int32(42),
}
proto.SetExtension(m, pb2.E_OptExtBool, true)
proto.SetExtension(m, pb2.E_OptExtString, "extension field")
proto.SetExtension(m, pb2.E_OptExtEnum, pb2.Enum_TEN)
proto.SetExtension(m, pb2.E_OptExtNested, &pb2.Nested{
OptString: proto.String("nested in an extension"),
OptNested: &pb2.Nested{
OptString: proto.String("another nested in an extension"),
},
})
return m
}(),
want: `{
"optString": "non-extension field",
"optBool": true,
"optInt32": 42,
"[pb2.opt_ext_bool]": true,
"[pb2.opt_ext_enum]": "TEN",
"[pb2.opt_ext_nested]": {
"optString": "nested in an extension",
"optNested": {
"optString": "another nested in an extension"
}
},
"[pb2.opt_ext_string]": "extension field"
}`,
}, {
desc: "extensions of repeated fields",
input: func() proto.Message {
m := &pb2.Extensions{}
proto.SetExtension(m, pb2.E_RptExtEnum, &[]pb2.Enum{pb2.Enum_TEN, 101, pb2.Enum_ONE})
proto.SetExtension(m, pb2.E_RptExtFixed32, &[]uint32{42, 47})
proto.SetExtension(m, pb2.E_RptExtNested, &[]*pb2.Nested{
&pb2.Nested{OptString: proto.String("one")},
&pb2.Nested{OptString: proto.String("two")},
&pb2.Nested{OptString: proto.String("three")},
})
return m
}(),
want: `{
"[pb2.rpt_ext_enum]": [
"TEN",
101,
"ONE"
],
"[pb2.rpt_ext_fixed32]": [
42,
47
],
"[pb2.rpt_ext_nested]": [
{
"optString": "one"
},
{
"optString": "two"
},
{
"optString": "three"
}
]
}`,
}, {
desc: "extensions of non-repeated fields in another message",
input: func() proto.Message {
m := &pb2.Extensions{}
proto.SetExtension(m, pb2.E_ExtensionsContainer_OptExtBool, true)
proto.SetExtension(m, pb2.E_ExtensionsContainer_OptExtString, "extension field")
proto.SetExtension(m, pb2.E_ExtensionsContainer_OptExtEnum, pb2.Enum_TEN)
proto.SetExtension(m, pb2.E_ExtensionsContainer_OptExtNested, &pb2.Nested{
OptString: proto.String("nested in an extension"),
OptNested: &pb2.Nested{
OptString: proto.String("another nested in an extension"),
},
})
return m
}(),
want: `{
"[pb2.ExtensionsContainer.opt_ext_bool]": true,
"[pb2.ExtensionsContainer.opt_ext_enum]": "TEN",
"[pb2.ExtensionsContainer.opt_ext_nested]": {
"optString": "nested in an extension",
"optNested": {
"optString": "another nested in an extension"
}
},
"[pb2.ExtensionsContainer.opt_ext_string]": "extension field"
}`,
}, {
desc: "extensions of repeated fields in another message",
input: func() proto.Message {
m := &pb2.Extensions{
OptString: proto.String("non-extension field"),
OptBool: proto.Bool(true),
OptInt32: proto.Int32(42),
}
proto.SetExtension(m, pb2.E_ExtensionsContainer_RptExtEnum, &[]pb2.Enum{pb2.Enum_TEN, 101, pb2.Enum_ONE})
proto.SetExtension(m, pb2.E_ExtensionsContainer_RptExtString, &[]string{"hello", "world"})
proto.SetExtension(m, pb2.E_ExtensionsContainer_RptExtNested, &[]*pb2.Nested{
&pb2.Nested{OptString: proto.String("one")},
&pb2.Nested{OptString: proto.String("two")},
&pb2.Nested{OptString: proto.String("three")},
})
return m
}(),
want: `{
"optString": "non-extension field",
"optBool": true,
"optInt32": 42,
"[pb2.ExtensionsContainer.rpt_ext_enum]": [
"TEN",
101,
"ONE"
],
"[pb2.ExtensionsContainer.rpt_ext_nested]": [
{
"optString": "one"
},
{
"optString": "two"