func TestAmbiguousAny(t *testing.T) {
	pb := &types.Any{}
	err := proto.UnmarshalText(`
	type_url: "ttt/proto3_proto.Nested"
	value: "\n\x05Monty"
	`, pb)
	t.Logf("result: %v (error: %v)", expandedMarshaler.Text(pb), err)
	if err != nil {
		t.Errorf("failed to parse ambiguous Any message: %v", err)
	}
}

func TestUnmarshalGolden(t *testing.T) {
	for _, tt := range goldenMessages {
		want := tt.m
		got := proto.Clone(tt.m)
		got.Reset()
		if err := proto.UnmarshalText(tt.t, got); err != nil {
			t.Errorf("failed to unmarshal\n%s\nerror: %v", tt.t, err)
		}
		if !anyEqual(got, want) {
			t.Errorf("message:\n%s\ngot:\n%s\nwant:\n%s", tt.t, got, want)
		}
		got.Reset()
		if err := proto.UnmarshalText(tt.c, got); err != nil {
			t.Errorf("failed to unmarshal\n%s\nerror: %v", tt.c, err)
		}
		if !anyEqual(got, want) {
			t.Errorf("message:\n%s\ngot:\n%s\nwant:\n%s", tt.c, got, want)
		}
	}
}

func TestUnmarshalAnyMixAndMatch(t *testing.T) {
	pb := &types.Any{}
	err := proto.UnmarshalText(`
	value: "\n\x05Monty"
  [type.googleapis.com/a/path/proto3_proto.Nested]: <
    bunny: "Rabbit of Caerbannog"
  >
	`, pb)
	want := `line 5: Any message unpacked multiple times, or "value" already set`
	if err.Error() != want {
		t.Errorf("incorrect error.\nHave: %v\nWant: %v", err.Error(), want)
	}
}

func TestMoreDefaultsAProtoCompactText(t *testing.T) {
	seed := time.Now().UnixNano()
	popr := math_rand.New(math_rand.NewSource(seed))
	p := NewPopulatedMoreDefaultsA(popr, true)
	data := github_com_maditya_protobuf_proto.CompactTextString(p)
	msg := &MoreDefaultsA{}
	if err := github_com_maditya_protobuf_proto.UnmarshalText(data, msg); err != nil {
		t.Fatalf("seed = %d, err = %v", seed, err)
	}
	if !p.Equal(msg) {
		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
	}
}

func TestIndexQueriesProtoText(t *testing.T) {
	seed := time.Now().UnixNano()
	popr := math_rand.New(math_rand.NewSource(seed))
	p := NewPopulatedIndexQueries(popr, true)
	data := github_com_maditya_protobuf_proto.MarshalTextString(p)
	msg := &IndexQueries{}
	if err := github_com_maditya_protobuf_proto.UnmarshalText(data, msg); err != nil {
		t.Fatalf("seed = %d, err = %v", seed, err)
	}
	if !p.Equal(msg) {
		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
	}
}

func TestUnmarshalOverwriteAny(t *testing.T) {
	pb := &types.Any{}
	err := proto.UnmarshalText(`
  [type.googleapis.com/a/path/proto3_proto.Nested]: <
    bunny: "Monty"
  >
  [type.googleapis.com/a/path/proto3_proto.Nested]: <
    bunny: "Rabbit of Caerbannog"
  >
	`, pb)
	want := `line 7: Any message unpacked multiple times, or "type_url" already set`
	if err.Error() != want {
		t.Errorf("incorrect error.\nHave: %v\nWant: %v", err.Error(), want)
	}
}

func TestWilsonProtoCompactText(t *testing.T) {
	seed := time.Now().UnixNano()
	popr := math_rand.New(math_rand.NewSource(seed))
	p := NewPopulatedWilson(popr, true)
	data := github_com_maditya_protobuf_proto.CompactTextString(p)
	msg := &Wilson{}
	if err := github_com_maditya_protobuf_proto.UnmarshalText(data, msg); err != nil {
		t.Fatalf("seed = %d, err = %v", seed, err)
	}
	if err := p.VerboseEqual(msg); err != nil {
		t.Fatalf("seed = %d, %#v !VerboseProto %#v, since %v", seed, msg, p, err)
	}
	if !p.Equal(msg) {
		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
	}
}

func TestCertificateAndKeyIDProtoText(t *testing.T) {
	t.Skip()
	seed := time.Now().UnixNano()
	popr := math_rand.New(math_rand.NewSource(seed))
	p := NewPopulatedCertificateAndKeyID(popr, true)
	data := github_com_maditya_protobuf_proto.MarshalTextString(p)
	msg := &CertificateAndKeyID{}
	if err := github_com_maditya_protobuf_proto.UnmarshalText(data, msg); err != nil {
		t.Fatalf("seed = %d, err = %v", seed, err)
	}
	if err := p.VerboseEqual(msg); err != nil {
		t.Fatalf("seed = %d, %#v !VerboseProto %#v, since %v", seed, msg, p, err)
	}
	if !p.Equal(msg) {
		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
	}
}

func TestStringEscaping(t *testing.T) {
	testCases := []struct {
		in  *pb.Strings
		out string
	}{
		{
			// Test data from C++ test (TextFormatTest.StringEscape).
			// Single divergence: we don't escape apostrophes.
			&pb.Strings{StringField: proto.String("\"A string with ' characters \n and \r newlines and \t tabs and \001 slashes \\ and  multiple   spaces")},
			"string_field: \"\\\"A string with ' characters \\n and \\r newlines and \\t tabs and \\001 slashes \\\\ and  multiple   spaces\"\n",
		},
		{
			// Test data from the same C++ test.
			&pb.Strings{StringField: proto.String("\350\260\267\346\255\214")},
			"string_field: \"\\350\\260\\267\\346\\255\\214\"\n",
		},
		{
			// Some UTF-8.
			&pb.Strings{StringField: proto.String("\x00\x01\xff\x81")},
			`string_field: "\000\001\377\201"` + "\n",
		},
	}

	for i, tc := range testCases {
		var buf bytes.Buffer
		if err := proto.MarshalText(&buf, tc.in); err != nil {
			t.Errorf("proto.MarsalText: %v", err)
			continue
		}
		s := buf.String()
		if s != tc.out {
			t.Errorf("#%d: Got:\n%s\nExpected:\n%s\n", i, s, tc.out)
			continue
		}

		// Check round-trip.
		pb := new(pb.Strings)
		if err := proto.UnmarshalText(s, pb); err != nil {
			t.Errorf("#%d: UnmarshalText: %v", i, err)
			continue
		}
		if !proto.Equal(pb, tc.in) {
			t.Errorf("#%d: Round-trip failed:\nstart: %v\n  end: %v", i, tc.in, pb)
		}
	}
}