xref: /aosp_15_r20/external/golang-protobuf/internal/msgfmt/format_test.go (revision 1c12ee1efe575feb122dbf939ff15148a3b3e8f2)
1*1c12ee1eSDan Willemsen// Copyright 2020 The Go Authors. All rights reserved.
2*1c12ee1eSDan Willemsen// Use of this source code is governed by a BSD-style
3*1c12ee1eSDan Willemsen// license that can be found in the LICENSE file.
4*1c12ee1eSDan Willemsen
5*1c12ee1eSDan Willemsenpackage msgfmt_test
6*1c12ee1eSDan Willemsen
7*1c12ee1eSDan Willemsenimport (
8*1c12ee1eSDan Willemsen	"math"
9*1c12ee1eSDan Willemsen	"sync"
10*1c12ee1eSDan Willemsen	"testing"
11*1c12ee1eSDan Willemsen
12*1c12ee1eSDan Willemsen	"github.com/google/go-cmp/cmp"
13*1c12ee1eSDan Willemsen
14*1c12ee1eSDan Willemsen	"google.golang.org/protobuf/internal/detrand"
15*1c12ee1eSDan Willemsen	"google.golang.org/protobuf/internal/msgfmt"
16*1c12ee1eSDan Willemsen	"google.golang.org/protobuf/proto"
17*1c12ee1eSDan Willemsen	"google.golang.org/protobuf/testing/protocmp"
18*1c12ee1eSDan Willemsen	"google.golang.org/protobuf/testing/protopack"
19*1c12ee1eSDan Willemsen
20*1c12ee1eSDan Willemsen	testpb "google.golang.org/protobuf/internal/testprotos/test"
21*1c12ee1eSDan Willemsen	textpb "google.golang.org/protobuf/internal/testprotos/textpb2"
22*1c12ee1eSDan Willemsen	dynpb "google.golang.org/protobuf/types/dynamicpb"
23*1c12ee1eSDan Willemsen	anypb "google.golang.org/protobuf/types/known/anypb"
24*1c12ee1eSDan Willemsen	durpb "google.golang.org/protobuf/types/known/durationpb"
25*1c12ee1eSDan Willemsen	tspb "google.golang.org/protobuf/types/known/timestamppb"
26*1c12ee1eSDan Willemsen	wpb "google.golang.org/protobuf/types/known/wrapperspb"
27*1c12ee1eSDan Willemsen)
28*1c12ee1eSDan Willemsen
29*1c12ee1eSDan Willemsenfunc init() {
30*1c12ee1eSDan Willemsen	detrand.Disable()
31*1c12ee1eSDan Willemsen}
32*1c12ee1eSDan Willemsen
33*1c12ee1eSDan Willemsenfunc TestFormat(t *testing.T) {
34*1c12ee1eSDan Willemsen	optMsg := &testpb.TestAllTypes{
35*1c12ee1eSDan Willemsen		OptionalBool:          proto.Bool(false),
36*1c12ee1eSDan Willemsen		OptionalInt32:         proto.Int32(-32),
37*1c12ee1eSDan Willemsen		OptionalInt64:         proto.Int64(-64),
38*1c12ee1eSDan Willemsen		OptionalUint32:        proto.Uint32(32),
39*1c12ee1eSDan Willemsen		OptionalUint64:        proto.Uint64(64),
40*1c12ee1eSDan Willemsen		OptionalFloat:         proto.Float32(32.32),
41*1c12ee1eSDan Willemsen		OptionalDouble:        proto.Float64(64.64),
42*1c12ee1eSDan Willemsen		OptionalString:        proto.String("string"),
43*1c12ee1eSDan Willemsen		OptionalBytes:         []byte("bytes"),
44*1c12ee1eSDan Willemsen		OptionalNestedEnum:    testpb.TestAllTypes_NEG.Enum(),
45*1c12ee1eSDan Willemsen		OptionalNestedMessage: &testpb.TestAllTypes_NestedMessage{A: proto.Int32(5)},
46*1c12ee1eSDan Willemsen	}
47*1c12ee1eSDan Willemsen	repMsg := &testpb.TestAllTypes{
48*1c12ee1eSDan Willemsen		RepeatedBool:   []bool{false, true},
49*1c12ee1eSDan Willemsen		RepeatedInt32:  []int32{32, -32},
50*1c12ee1eSDan Willemsen		RepeatedInt64:  []int64{64, -64},
51*1c12ee1eSDan Willemsen		RepeatedUint32: []uint32{0, 32},
52*1c12ee1eSDan Willemsen		RepeatedUint64: []uint64{0, 64},
53*1c12ee1eSDan Willemsen		RepeatedFloat:  []float32{0, 32.32},
54*1c12ee1eSDan Willemsen		RepeatedDouble: []float64{0, 64.64},
55*1c12ee1eSDan Willemsen		RepeatedString: []string{"s1", "s2"},
56*1c12ee1eSDan Willemsen		RepeatedBytes:  [][]byte{{1}, {2}},
57*1c12ee1eSDan Willemsen		RepeatedNestedEnum: []testpb.TestAllTypes_NestedEnum{
58*1c12ee1eSDan Willemsen			testpb.TestAllTypes_FOO,
59*1c12ee1eSDan Willemsen			testpb.TestAllTypes_BAR,
60*1c12ee1eSDan Willemsen		},
61*1c12ee1eSDan Willemsen		RepeatedNestedMessage: []*testpb.TestAllTypes_NestedMessage{
62*1c12ee1eSDan Willemsen			{A: proto.Int32(5)},
63*1c12ee1eSDan Willemsen			{A: proto.Int32(-5)},
64*1c12ee1eSDan Willemsen		},
65*1c12ee1eSDan Willemsen	}
66*1c12ee1eSDan Willemsen	mapMsg := &testpb.TestAllTypes{
67*1c12ee1eSDan Willemsen		MapBoolBool:     map[bool]bool{true: false},
68*1c12ee1eSDan Willemsen		MapInt32Int32:   map[int32]int32{-32: 32},
69*1c12ee1eSDan Willemsen		MapInt64Int64:   map[int64]int64{-64: 64},
70*1c12ee1eSDan Willemsen		MapUint32Uint32: map[uint32]uint32{0: 32},
71*1c12ee1eSDan Willemsen		MapUint64Uint64: map[uint64]uint64{0: 64},
72*1c12ee1eSDan Willemsen		MapInt32Float:   map[int32]float32{32: 32.32},
73*1c12ee1eSDan Willemsen		MapInt32Double:  map[int32]float64{64: 64.64},
74*1c12ee1eSDan Willemsen		MapStringString: map[string]string{"k": "v"},
75*1c12ee1eSDan Willemsen		MapStringBytes:  map[string][]byte{"k": []byte("v")},
76*1c12ee1eSDan Willemsen		MapStringNestedEnum: map[string]testpb.TestAllTypes_NestedEnum{
77*1c12ee1eSDan Willemsen			"k": testpb.TestAllTypes_FOO,
78*1c12ee1eSDan Willemsen		},
79*1c12ee1eSDan Willemsen		MapStringNestedMessage: map[string]*testpb.TestAllTypes_NestedMessage{
80*1c12ee1eSDan Willemsen			"k": {A: proto.Int32(5)},
81*1c12ee1eSDan Willemsen		},
82*1c12ee1eSDan Willemsen	}
83*1c12ee1eSDan Willemsen
84*1c12ee1eSDan Willemsen	tests := []struct {
85*1c12ee1eSDan Willemsen		in   proto.Message
86*1c12ee1eSDan Willemsen		want string
87*1c12ee1eSDan Willemsen	}{{
88*1c12ee1eSDan Willemsen		in:   optMsg,
89*1c12ee1eSDan Willemsen		want: `{optional_int32:-32, optional_int64:-64, optional_uint32:32, optional_uint64:64, optional_float:32.32, optional_double:64.64, optional_bool:false, optional_string:"string", optional_bytes:"bytes", optional_nested_message:{a:5}, optional_nested_enum:NEG}`,
90*1c12ee1eSDan Willemsen	}, {
91*1c12ee1eSDan Willemsen		in:   repMsg,
92*1c12ee1eSDan Willemsen		want: `{repeated_int32:[32, -32], repeated_int64:[64, -64], repeated_uint32:[0, 32], repeated_uint64:[0, 64], repeated_float:[0, 32.32], repeated_double:[0, 64.64], repeated_bool:[false, true], repeated_string:["s1", "s2"], repeated_bytes:["\x01", "\x02"], repeated_nested_message:[{a:5}, {a:-5}], repeated_nested_enum:[FOO, BAR]}`,
93*1c12ee1eSDan Willemsen	}, {
94*1c12ee1eSDan Willemsen		in:   mapMsg,
95*1c12ee1eSDan Willemsen		want: `{map_int32_int32:{-32:32}, map_int64_int64:{-64:64}, map_uint32_uint32:{0:32}, map_uint64_uint64:{0:64}, map_int32_float:{32:32.32}, map_int32_double:{64:64.64}, map_bool_bool:{true:false}, map_string_string:{"k":"v"}, map_string_bytes:{"k":"v"}, map_string_nested_message:{"k":{a:5}}, map_string_nested_enum:{"k":FOO}}`,
96*1c12ee1eSDan Willemsen	}, {
97*1c12ee1eSDan Willemsen		in: func() proto.Message {
98*1c12ee1eSDan Willemsen			m := &testpb.TestAllExtensions{}
99*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_OptionalBool, bool(false))
100*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_OptionalInt32, int32(-32))
101*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_OptionalInt64, int64(-64))
102*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_OptionalUint32, uint32(32))
103*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_OptionalUint64, uint64(64))
104*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_OptionalFloat, float32(32.32))
105*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_OptionalDouble, float64(64.64))
106*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_OptionalString, string("string"))
107*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_OptionalBytes, []byte("bytes"))
108*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_OptionalNestedEnum, testpb.TestAllTypes_NEG)
109*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_OptionalNestedMessage, &testpb.TestAllExtensions_NestedMessage{A: proto.Int32(5)})
110*1c12ee1eSDan Willemsen			return m
111*1c12ee1eSDan Willemsen		}(),
112*1c12ee1eSDan Willemsen		want: `{[goproto.proto.test.optional_bool]:false, [goproto.proto.test.optional_bytes]:"bytes", [goproto.proto.test.optional_double]:64.64, [goproto.proto.test.optional_float]:32.32, [goproto.proto.test.optional_int32]:-32, [goproto.proto.test.optional_int64]:-64, [goproto.proto.test.optional_nested_enum]:NEG, [goproto.proto.test.optional_nested_message]:{a:5}, [goproto.proto.test.optional_string]:"string", [goproto.proto.test.optional_uint32]:32, [goproto.proto.test.optional_uint64]:64}`,
113*1c12ee1eSDan Willemsen	}, {
114*1c12ee1eSDan Willemsen		in: func() proto.Message {
115*1c12ee1eSDan Willemsen			m := &testpb.TestAllExtensions{}
116*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_RepeatedBool, []bool{false, true})
117*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_RepeatedInt32, []int32{32, -32})
118*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_RepeatedInt64, []int64{64, -64})
119*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_RepeatedUint32, []uint32{0, 32})
120*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_RepeatedUint64, []uint64{0, 64})
121*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_RepeatedFloat, []float32{0, 32.32})
122*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_RepeatedDouble, []float64{0, 64.64})
123*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_RepeatedString, []string{"s1", "s2"})
124*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_RepeatedBytes, [][]byte{{1}, {2}})
125*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_RepeatedNestedEnum, []testpb.TestAllTypes_NestedEnum{
126*1c12ee1eSDan Willemsen				testpb.TestAllTypes_FOO,
127*1c12ee1eSDan Willemsen				testpb.TestAllTypes_BAR,
128*1c12ee1eSDan Willemsen			})
129*1c12ee1eSDan Willemsen			proto.SetExtension(m, testpb.E_RepeatedNestedMessage, []*testpb.TestAllExtensions_NestedMessage{
130*1c12ee1eSDan Willemsen				{A: proto.Int32(5)},
131*1c12ee1eSDan Willemsen				{A: proto.Int32(-5)},
132*1c12ee1eSDan Willemsen			})
133*1c12ee1eSDan Willemsen			return m
134*1c12ee1eSDan Willemsen		}(),
135*1c12ee1eSDan Willemsen		want: `{[goproto.proto.test.repeated_bool]:[false, true], [goproto.proto.test.repeated_bytes]:["\x01", "\x02"], [goproto.proto.test.repeated_double]:[0, 64.64], [goproto.proto.test.repeated_float]:[0, 32.32], [goproto.proto.test.repeated_int32]:[32, -32], [goproto.proto.test.repeated_int64]:[64, -64], [goproto.proto.test.repeated_nested_enum]:[FOO, BAR], [goproto.proto.test.repeated_nested_message]:[{a:5}, {a:-5}], [goproto.proto.test.repeated_string]:["s1", "s2"], [goproto.proto.test.repeated_uint32]:[0, 32], [goproto.proto.test.repeated_uint64]:[0, 64]}`,
136*1c12ee1eSDan Willemsen	}, {
137*1c12ee1eSDan Willemsen		in: func() proto.Message {
138*1c12ee1eSDan Willemsen			m := &testpb.TestAllTypes{}
139*1c12ee1eSDan Willemsen			m.ProtoReflect().SetUnknown(protopack.Message{
140*1c12ee1eSDan Willemsen				protopack.Tag{Number: 50000, Type: protopack.VarintType}, protopack.Uvarint(100),
141*1c12ee1eSDan Willemsen				protopack.Tag{Number: 50001, Type: protopack.Fixed32Type}, protopack.Uint32(200),
142*1c12ee1eSDan Willemsen				protopack.Tag{Number: 50002, Type: protopack.Fixed64Type}, protopack.Uint64(300),
143*1c12ee1eSDan Willemsen				protopack.Tag{Number: 50003, Type: protopack.BytesType}, protopack.String("hello"),
144*1c12ee1eSDan Willemsen				protopack.Message{
145*1c12ee1eSDan Willemsen					protopack.Tag{Number: 50004, Type: protopack.StartGroupType},
146*1c12ee1eSDan Willemsen					protopack.Tag{Number: 1, Type: protopack.VarintType}, protopack.Uvarint(100),
147*1c12ee1eSDan Willemsen					protopack.Tag{Number: 1, Type: protopack.Fixed32Type}, protopack.Uint32(200),
148*1c12ee1eSDan Willemsen					protopack.Tag{Number: 1, Type: protopack.Fixed64Type}, protopack.Uint64(300),
149*1c12ee1eSDan Willemsen					protopack.Tag{Number: 1, Type: protopack.BytesType}, protopack.String("hello"),
150*1c12ee1eSDan Willemsen					protopack.Message{
151*1c12ee1eSDan Willemsen						protopack.Tag{Number: 1, Type: protopack.StartGroupType},
152*1c12ee1eSDan Willemsen						protopack.Tag{Number: 1, Type: protopack.VarintType}, protopack.Uvarint(100),
153*1c12ee1eSDan Willemsen						protopack.Tag{Number: 1, Type: protopack.Fixed32Type}, protopack.Uint32(200),
154*1c12ee1eSDan Willemsen						protopack.Tag{Number: 1, Type: protopack.Fixed64Type}, protopack.Uint64(300),
155*1c12ee1eSDan Willemsen						protopack.Tag{Number: 1, Type: protopack.BytesType}, protopack.String("hello"),
156*1c12ee1eSDan Willemsen						protopack.Tag{Number: 1, Type: protopack.EndGroupType},
157*1c12ee1eSDan Willemsen					},
158*1c12ee1eSDan Willemsen					protopack.Tag{Number: 50004, Type: protopack.EndGroupType},
159*1c12ee1eSDan Willemsen				},
160*1c12ee1eSDan Willemsen			}.Marshal())
161*1c12ee1eSDan Willemsen			return m
162*1c12ee1eSDan Willemsen		}(),
163*1c12ee1eSDan Willemsen		want: `{50000:100, 50001:0x000000c8, 50002:0x000000000000012c, 50003:"hello", 50004:{1:[100, 0x000000c8, 0x000000000000012c, "hello", {1:[100, 0x000000c8, 0x000000000000012c, "hello"]}]}}`,
164*1c12ee1eSDan Willemsen	}, {
165*1c12ee1eSDan Willemsen		in: &textpb.KnownTypes{
166*1c12ee1eSDan Willemsen			OptAny: &anypb.Any{
167*1c12ee1eSDan Willemsen				TypeUrl: "google.golang.org/goproto.proto.test.TestAllTypes",
168*1c12ee1eSDan Willemsen				Value: func() []byte {
169*1c12ee1eSDan Willemsen					b1, _ := proto.MarshalOptions{Deterministic: true}.Marshal(optMsg)
170*1c12ee1eSDan Willemsen					b2, _ := proto.MarshalOptions{Deterministic: true}.Marshal(repMsg)
171*1c12ee1eSDan Willemsen					b3, _ := proto.MarshalOptions{Deterministic: true}.Marshal(mapMsg)
172*1c12ee1eSDan Willemsen					return append(append(append([]byte(nil), b1...), b2...), b3...)
173*1c12ee1eSDan Willemsen				}(),
174*1c12ee1eSDan Willemsen			},
175*1c12ee1eSDan Willemsen		},
176*1c12ee1eSDan Willemsen		want: `{opt_any:{[google.golang.org/goproto.proto.test.TestAllTypes]:{optional_int32:-32, optional_int64:-64, optional_uint32:32, optional_uint64:64, optional_float:32.32, optional_double:64.64, optional_bool:false, optional_string:"string", optional_bytes:"bytes", optional_nested_message:{a:5}, optional_nested_enum:NEG, repeated_int32:[32, -32], repeated_int64:[64, -64], repeated_uint32:[0, 32], repeated_uint64:[0, 64], repeated_float:[0, 32.32], repeated_double:[0, 64.64], repeated_bool:[false, true], repeated_string:["s1", "s2"], repeated_bytes:["\x01", "\x02"], repeated_nested_message:[{a:5}, {a:-5}], repeated_nested_enum:[FOO, BAR], map_int32_int32:{-32:32}, map_int64_int64:{-64:64}, map_uint32_uint32:{0:32}, map_uint64_uint64:{0:64}, map_int32_float:{32:32.32}, map_int32_double:{64:64.64}, map_bool_bool:{true:false}, map_string_string:{"k":"v"}, map_string_bytes:{"k":"v"}, map_string_nested_message:{"k":{a:5}}, map_string_nested_enum:{"k":FOO}}}}`,
177*1c12ee1eSDan Willemsen	}, {
178*1c12ee1eSDan Willemsen		in: &textpb.KnownTypes{
179*1c12ee1eSDan Willemsen			OptTimestamp: &tspb.Timestamp{Seconds: math.MinInt64, Nanos: math.MaxInt32},
180*1c12ee1eSDan Willemsen		},
181*1c12ee1eSDan Willemsen		want: `{opt_timestamp:{seconds:-9223372036854775808, nanos:2147483647}}`,
182*1c12ee1eSDan Willemsen	}, {
183*1c12ee1eSDan Willemsen		in: &textpb.KnownTypes{
184*1c12ee1eSDan Willemsen			OptTimestamp: &tspb.Timestamp{Seconds: 1257894123, Nanos: 456789},
185*1c12ee1eSDan Willemsen		},
186*1c12ee1eSDan Willemsen		want: `{opt_timestamp:2009-11-10T23:02:03.000456789Z}`,
187*1c12ee1eSDan Willemsen	}, {
188*1c12ee1eSDan Willemsen		in: &textpb.KnownTypes{
189*1c12ee1eSDan Willemsen			OptDuration: &durpb.Duration{Seconds: math.MinInt64, Nanos: math.MaxInt32},
190*1c12ee1eSDan Willemsen		},
191*1c12ee1eSDan Willemsen		want: `{opt_duration:{seconds:-9223372036854775808, nanos:2147483647}}`,
192*1c12ee1eSDan Willemsen	}, {
193*1c12ee1eSDan Willemsen		in: &textpb.KnownTypes{
194*1c12ee1eSDan Willemsen			OptDuration: &durpb.Duration{Seconds: +1257894123, Nanos: +456789},
195*1c12ee1eSDan Willemsen		},
196*1c12ee1eSDan Willemsen		want: `{opt_duration:1257894123.000456789s}`,
197*1c12ee1eSDan Willemsen	}, {
198*1c12ee1eSDan Willemsen		in: &textpb.KnownTypes{
199*1c12ee1eSDan Willemsen			OptDuration: &durpb.Duration{Seconds: -1257894123, Nanos: -456789},
200*1c12ee1eSDan Willemsen		},
201*1c12ee1eSDan Willemsen		want: `{opt_duration:-1257894123.000456789s}`,
202*1c12ee1eSDan Willemsen	}, {
203*1c12ee1eSDan Willemsen		in: &textpb.KnownTypes{
204*1c12ee1eSDan Willemsen			OptDuration: &durpb.Duration{Seconds: 0, Nanos: -1},
205*1c12ee1eSDan Willemsen		},
206*1c12ee1eSDan Willemsen		want: `{opt_duration:-0.000000001s}`,
207*1c12ee1eSDan Willemsen	}, {
208*1c12ee1eSDan Willemsen		in: &textpb.KnownTypes{
209*1c12ee1eSDan Willemsen			OptBool:   &wpb.BoolValue{},
210*1c12ee1eSDan Willemsen			OptInt32:  &wpb.Int32Value{},
211*1c12ee1eSDan Willemsen			OptInt64:  &wpb.Int64Value{},
212*1c12ee1eSDan Willemsen			OptUint32: &wpb.UInt32Value{},
213*1c12ee1eSDan Willemsen			OptUint64: &wpb.UInt64Value{},
214*1c12ee1eSDan Willemsen			OptFloat:  &wpb.FloatValue{},
215*1c12ee1eSDan Willemsen			OptDouble: &wpb.DoubleValue{},
216*1c12ee1eSDan Willemsen			OptString: &wpb.StringValue{},
217*1c12ee1eSDan Willemsen			OptBytes:  &wpb.BytesValue{},
218*1c12ee1eSDan Willemsen		},
219*1c12ee1eSDan Willemsen		want: `{opt_bool:false, opt_int32:0, opt_int64:0, opt_uint32:0, opt_uint64:0, opt_float:0, opt_double:0, opt_string:"", opt_bytes:""}`,
220*1c12ee1eSDan Willemsen	}}
221*1c12ee1eSDan Willemsen	for _, tt := range tests {
222*1c12ee1eSDan Willemsen		t.Run("Generated", func(t *testing.T) {
223*1c12ee1eSDan Willemsen			got := msgfmt.Format(tt.in)
224*1c12ee1eSDan Willemsen			if diff := cmp.Diff(tt.want, got); diff != "" {
225*1c12ee1eSDan Willemsen				t.Errorf("Format() mismatch (-want +got):\n%v", diff)
226*1c12ee1eSDan Willemsen			}
227*1c12ee1eSDan Willemsen		})
228*1c12ee1eSDan Willemsen		t.Run("dynamicpb.Message", func(t *testing.T) {
229*1c12ee1eSDan Willemsen			m := dynpb.NewMessage(tt.in.ProtoReflect().Descriptor())
230*1c12ee1eSDan Willemsen			proto.Merge(m, tt.in)
231*1c12ee1eSDan Willemsen			got := msgfmt.Format(m)
232*1c12ee1eSDan Willemsen			if diff := cmp.Diff(tt.want, got); diff != "" {
233*1c12ee1eSDan Willemsen				t.Errorf("Format() mismatch (-want +got):\n%v", diff)
234*1c12ee1eSDan Willemsen			}
235*1c12ee1eSDan Willemsen		})
236*1c12ee1eSDan Willemsen		t.Run("protocmp.Message", func(t *testing.T) {
237*1c12ee1eSDan Willemsen			// This is a roundabout way to obtain a protocmp.Message since there
238*1c12ee1eSDan Willemsen			// is no exported API in protocmp to directly transform a message.
239*1c12ee1eSDan Willemsen			var m proto.Message
240*1c12ee1eSDan Willemsen			var once sync.Once
241*1c12ee1eSDan Willemsen			cmp.Equal(tt.in, tt.in, protocmp.Transform(), cmp.FilterPath(func(p cmp.Path) bool {
242*1c12ee1eSDan Willemsen				if v, _ := p.Index(1).Values(); v.IsValid() {
243*1c12ee1eSDan Willemsen					once.Do(func() { m = v.Interface().(protocmp.Message) })
244*1c12ee1eSDan Willemsen				}
245*1c12ee1eSDan Willemsen				return false
246*1c12ee1eSDan Willemsen			}, cmp.Ignore()))
247*1c12ee1eSDan Willemsen
248*1c12ee1eSDan Willemsen			got := msgfmt.Format(m)
249*1c12ee1eSDan Willemsen			if diff := cmp.Diff(tt.want, got); diff != "" {
250*1c12ee1eSDan Willemsen				t.Errorf("Format() mismatch (-want +got):\n%v", diff)
251*1c12ee1eSDan Willemsen			}
252*1c12ee1eSDan Willemsen		})
253*1c12ee1eSDan Willemsen	}
254*1c12ee1eSDan Willemsen}
255