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diagnose_test.go
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// Copyright (c) Faye Amacker. All rights reserved.
// Licensed under the MIT License. See LICENSE in the project root for license information.
package cbor
import (
"bytes"
"fmt"
"io"
"reflect"
"strings"
"testing"
)
func TestDiagnosticNotationExamples(t *testing.T) {
// https://www.rfc-editor.org/rfc/rfc8949.html#name-examples-of-encoded-cbor-da
testCases := []struct {
cbor []byte
diag string
}{
{
hexDecode("00"),
`0`,
},
{
hexDecode("01"),
`1`,
},
{
hexDecode("0a"),
`10`,
},
{
hexDecode("17"),
`23`,
},
{
hexDecode("1818"),
`24`,
},
{
hexDecode("1819"),
`25`,
},
{
hexDecode("1864"),
`100`,
},
{
hexDecode("1903e8"),
`1000`,
},
{
hexDecode("1a000f4240"),
`1000000`,
},
{
hexDecode("1b000000e8d4a51000"),
`1000000000000`,
},
{
hexDecode("1bffffffffffffffff"),
`18446744073709551615`,
},
{
hexDecode("c249010000000000000000"),
`18446744073709551616`,
},
{
hexDecode("3bffffffffffffffff"),
`-18446744073709551616`,
},
{
hexDecode("c349010000000000000000"),
`-18446744073709551617`,
},
{
hexDecode("20"),
`-1`,
},
{
hexDecode("29"),
`-10`,
},
{
hexDecode("3863"),
`-100`,
},
{
hexDecode("3903e7"),
`-1000`,
},
{
hexDecode("f90000"),
`0.0`,
},
{
hexDecode("f98000"),
`-0.0`,
},
{
hexDecode("f93c00"),
`1.0`,
},
{
hexDecode("fb3ff199999999999a"),
`1.1`,
},
{
hexDecode("f93e00"),
`1.5`,
},
{
hexDecode("f97bff"),
`65504.0`,
},
{
hexDecode("fa47c35000"),
`100000.0`,
},
{
hexDecode("fa7f7fffff"),
`3.4028234663852886e+38`,
},
{
hexDecode("fb7e37e43c8800759c"),
`1.0e+300`,
},
{
hexDecode("f90001"),
`5.960464477539063e-8`,
},
{
hexDecode("f90400"),
`0.00006103515625`,
},
{
hexDecode("f9c400"),
`-4.0`,
},
{
hexDecode("fbc010666666666666"),
`-4.1`,
},
{
hexDecode("f97c00"),
`Infinity`,
},
{
hexDecode("f97e00"),
`NaN`,
},
{
hexDecode("f9fc00"),
`-Infinity`,
},
{
hexDecode("fa7f800000"),
`Infinity`,
},
{
hexDecode("fa7fc00000"),
`NaN`,
},
{
hexDecode("faff800000"),
`-Infinity`,
},
{
hexDecode("fb7ff0000000000000"),
`Infinity`,
},
{
hexDecode("fb7ff8000000000000"),
`NaN`,
},
{
hexDecode("fbfff0000000000000"),
`-Infinity`,
},
{
hexDecode("f4"),
`false`,
},
{
hexDecode("f5"),
`true`,
},
{
hexDecode("f6"),
`null`,
},
{
hexDecode("f7"),
`undefined`,
},
{
hexDecode("f0"),
`simple(16)`,
},
{
hexDecode("f8ff"),
`simple(255)`,
},
{
hexDecode("c074323031332d30332d32315432303a30343a30305a"),
`0("2013-03-21T20:04:00Z")`,
},
{
hexDecode("c11a514b67b0"),
`1(1363896240)`,
},
{
hexDecode("c1fb41d452d9ec200000"),
`1(1363896240.5)`,
},
{
hexDecode("d74401020304"),
`23(h'01020304')`,
},
{
hexDecode("d818456449455446"),
`24(h'6449455446')`,
},
{
hexDecode("d82076687474703a2f2f7777772e6578616d706c652e636f6d"),
`32("http://www.example.com")`,
},
{
hexDecode("40"),
`h''`,
},
{
hexDecode("4401020304"),
`h'01020304'`,
},
{
hexDecode("60"),
`""`,
},
{
hexDecode("6161"),
`"a"`,
},
{
hexDecode("6449455446"),
`"IETF"`,
},
{
hexDecode("62225c"),
`"\"\\"`,
},
{
hexDecode("62c3bc"),
`"\u00fc"`,
},
{
hexDecode("63e6b0b4"),
`"\u6c34"`,
},
{
hexDecode("64f0908591"),
`"\ud800\udd51"`,
},
{
hexDecode("80"),
`[]`,
},
{
hexDecode("83010203"),
`[1, 2, 3]`,
},
{
hexDecode("8301820203820405"),
`[1, [2, 3], [4, 5]]`,
},
{
hexDecode("98190102030405060708090a0b0c0d0e0f101112131415161718181819"),
`[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25]`,
},
{
hexDecode("a0"),
`{}`,
},
{
hexDecode("a201020304"),
`{1: 2, 3: 4}`,
},
{
hexDecode("a26161016162820203"),
`{"a": 1, "b": [2, 3]}`,
},
{
hexDecode("826161a161626163"),
`["a", {"b": "c"}]`,
},
{
hexDecode("a56161614161626142616361436164614461656145"),
`{"a": "A", "b": "B", "c": "C", "d": "D", "e": "E"}`,
},
{
hexDecode("5f42010243030405ff"),
`(_ h'0102', h'030405')`,
},
{
hexDecode("7f657374726561646d696e67ff"),
`(_ "strea", "ming")`,
},
{
hexDecode("9fff"),
`[_ ]`,
},
{
hexDecode("9f018202039f0405ffff"),
`[_ 1, [2, 3], [_ 4, 5]]`,
},
{
hexDecode("9f01820203820405ff"),
`[_ 1, [2, 3], [4, 5]]`,
},
{
hexDecode("83018202039f0405ff"),
`[1, [2, 3], [_ 4, 5]]`,
},
{
hexDecode("83019f0203ff820405"),
`[1, [_ 2, 3], [4, 5]]`,
},
{
hexDecode("9f0102030405060708090a0b0c0d0e0f101112131415161718181819ff"),
`[_ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25]`,
},
{
hexDecode("bf61610161629f0203ffff"),
`{_ "a": 1, "b": [_ 2, 3]}`,
},
{
hexDecode("826161bf61626163ff"),
`["a", {_ "b": "c"}]`,
},
{
hexDecode("bf6346756ef563416d7421ff"),
`{_ "Fun": true, "Amt": -2}`,
},
}
for i, tc := range testCases {
t.Run(fmt.Sprintf("Diagnostic %d", i), func(t *testing.T) {
str, err := Diagnose(tc.cbor)
if err != nil {
t.Errorf("Diagnostic(0x%x) returned error %q", tc.cbor, err)
} else if str != tc.diag {
t.Errorf("Diagnostic(0x%x) returned `%s`, want `%s`", tc.cbor, str, tc.diag)
}
str, rest, err := DiagnoseFirst(tc.cbor)
if err != nil {
t.Errorf("Diagnostic(0x%x) returned error %q", tc.cbor, err)
} else if str != tc.diag {
t.Errorf("Diagnostic(0x%x) returned `%s`, want `%s`", tc.cbor, str, tc.diag)
}
if rest == nil {
t.Errorf("Diagnostic(0x%x) returned nil rest", tc.cbor)
} else if len(rest) != 0 {
t.Errorf("Diagnostic(0x%x) returned non-empty rest '%x'", tc.cbor, rest)
}
})
}
}
func TestDiagnoseByteString(t *testing.T) {
testCases := []struct {
title string
cbor []byte
diag string
opts *DiagOptions
}{
{
"base16",
hexDecode("4412345678"),
`h'12345678'`,
&DiagOptions{
ByteStringEncoding: ByteStringBase16Encoding,
},
},
{
"base32",
hexDecode("4412345678"),
`b32'CI2FM6A'`,
&DiagOptions{
ByteStringEncoding: ByteStringBase32Encoding,
},
},
{
"base32hex",
hexDecode("4412345678"),
`h32'28Q5CU0'`,
&DiagOptions{
ByteStringEncoding: ByteStringBase32HexEncoding,
},
},
{
"base64",
hexDecode("4412345678"),
`b64'EjRWeA'`,
&DiagOptions{
ByteStringEncoding: ByteStringBase64Encoding,
},
},
{
"without ByteStringHexWhitespace option",
hexDecode("4b48656c6c6f20776f726c64"),
`h'48656c6c6f20776f726c64'`,
&DiagOptions{
ByteStringHexWhitespace: false,
},
},
{
"with ByteStringHexWhitespace option",
hexDecode("4b48656c6c6f20776f726c64"),
`h'48 65 6c 6c 6f 20 77 6f 72 6c 64'`,
&DiagOptions{
ByteStringHexWhitespace: true,
},
},
{
"without ByteStringText option",
hexDecode("4b68656c6c6f20776f726c64"),
`h'68656c6c6f20776f726c64'`,
&DiagOptions{
ByteStringText: false,
},
},
{
"with ByteStringText option",
hexDecode("4b68656c6c6f20776f726c64"),
`'hello world'`,
&DiagOptions{
ByteStringText: true,
},
},
{
"without ByteStringText option and with ByteStringHexWhitespace option",
hexDecode("4b68656c6c6f20776f726c64"),
`h'68 65 6c 6c 6f 20 77 6f 72 6c 64'`,
&DiagOptions{
ByteStringText: false,
ByteStringHexWhitespace: true,
},
},
{
"without ByteStringEmbeddedCBOR",
hexDecode("4101"),
`h'01'`,
&DiagOptions{
ByteStringEmbeddedCBOR: false,
},
},
{
"with ByteStringEmbeddedCBOR",
hexDecode("4101"),
`<<1>>`,
&DiagOptions{
ByteStringEmbeddedCBOR: true,
},
},
{
"multi CBOR items without ByteStringEmbeddedCBOR",
hexDecode("420102"),
`h'0102'`,
&DiagOptions{
ByteStringEmbeddedCBOR: false,
},
},
{
"multi CBOR items with ByteStringEmbeddedCBOR",
hexDecode("420102"),
`<<1, 2>>`,
&DiagOptions{
ByteStringEmbeddedCBOR: true,
},
},
{
"multi CBOR items with ByteStringEmbeddedCBOR",
hexDecode("4563666F6FF6"),
`h'63666f6ff6'`,
&DiagOptions{
ByteStringEmbeddedCBOR: false,
},
},
{
"multi CBOR items with ByteStringEmbeddedCBOR",
hexDecode("4563666F6FF6"),
`<<"foo", null>>`,
&DiagOptions{
ByteStringEmbeddedCBOR: true,
},
},
{
"indefinite length byte string with no chunks",
hexDecode("5fff"),
`''_`,
&DiagOptions{},
},
{
"indefinite length byte string with a empty byte string",
hexDecode("5f40ff"),
`(_ h'')`, // RFC 8949, Section 8.1 says `(_ '')` but it looks wrong and conflicts with Appendix A.
&DiagOptions{},
},
{
"indefinite length byte string with two empty byte string",
hexDecode("5f4040ff"),
`(_ h'', h'')`,
&DiagOptions{},
},
}
for _, tc := range testCases {
t.Run(tc.title, func(t *testing.T) {
dm, err := tc.opts.DiagMode()
if err != nil {
t.Errorf("DiagMode() for 0x%x returned error %q", tc.cbor, err)
}
str, err := dm.Diagnose(tc.cbor)
if err != nil {
t.Errorf("Diagnose(0x%x) returned error %q", tc.cbor, err)
} else if str != tc.diag {
t.Errorf("Diagnose(0x%x) returned `%s`, want %s", tc.cbor, str, tc.diag)
}
})
}
}
func TestDiagnoseTextString(t *testing.T) {
testCases := []struct {
title string
cbor []byte
diag string
opts *DiagOptions
}{
{
"\t",
hexDecode("6109"),
`"\t"`,
&DiagOptions{},
},
{
"\r",
hexDecode("610d"),
`"\r"`,
&DiagOptions{},
},
{
"other ascii",
hexDecode("611b"),
`"\u001b"`,
&DiagOptions{},
},
{
"valid UTF-8 text in byte string",
hexDecode("4d68656c6c6f2c20e4bda0e5a5bd"),
`'hello, \u4f60\u597d'`,
&DiagOptions{
ByteStringText: true,
},
},
{
"valid UTF-8 text in text string",
hexDecode("6d68656c6c6f2c20e4bda0e5a5bd"),
`"hello, \u4f60\u597d"`, // "hello, 你好"
&DiagOptions{
ByteStringText: true,
},
},
{
"invalid UTF-8 text in byte string",
hexDecode("4d68656c6c6fffeee4bda0e5a5bd"),
`h'68656c6c6fffeee4bda0e5a5bd'`,
&DiagOptions{
ByteStringText: true,
},
},
// {
// "invalid UTF-8 text in text string",
// hexDecode("6d68656c6c6fffeee4bda0e5a5bd"),
// `"hello\u00ff\u00ee\u4f60\u597d"`,
// &DiagOptions{
// ByteStringText: true,
// },
// },
{
"valid grapheme cluster text in byte string",
hexDecode("583448656c6c6f2c2027e29da4efb88fe2808df09f94a5270ae4bda0e5a5bdefbc8c22f09fa791e2808df09fa49de2808df09fa79122"),
`'Hello, \'\u2764\ufe0f\u200d\ud83d\udd25\'\n\u4f60\u597d\uff0c"\ud83e\uddd1\u200d\ud83e\udd1d\u200d\ud83e\uddd1"'`,
&DiagOptions{
ByteStringText: true,
},
},
{
"valid grapheme cluster text in text string",
hexDecode("783448656c6c6f2c2027e29da4efb88fe2808df09f94a5270ae4bda0e5a5bdefbc8c22f09fa791e2808df09fa49de2808df09fa79122"),
`"Hello, '\u2764\ufe0f\u200d\ud83d\udd25'\n\u4f60\u597d\uff0c\"\ud83e\uddd1\u200d\ud83e\udd1d\u200d\ud83e\uddd1\""`, // "Hello, '❤️🔥'\n你好，\"🧑🤝🧑\""
&DiagOptions{
ByteStringText: true,
},
},
{
"invalid grapheme cluster text in byte string",
hexDecode("583448656c6c6feeff27e29da4efb88fe2808df09f94a5270de4bda0e5a5bdefbc8c22f09fa791e2808df09fa49de2808df09fa79122"),
`h'48656c6c6feeff27e29da4efb88fe2808df09f94a5270de4bda0e5a5bdefbc8c22f09fa791e2808df09fa49de2808df09fa79122'`,
&DiagOptions{
ByteStringText: true,
},
},
// {
// "invalid grapheme cluster text in text string",
// hexDecode("783448656c6c6feeff27e29da4efb88fe2808df09f94a5270de4bda0e5a5bdefbc8c22f09fa791e2808df09fa49de2808df09fa79122"),
// `"Hello\u00ee\u00ff'\u2764\ufe0f\u200d\ud83d\udd25'\r\u4f60\u597d\uff0c\"\ud83e\uddd1\u200d\ud83e\udd1d\u200d\ud83e\uddd1\""`,
// &DiagOptions{
// ByteStringText: true,
// },
// },
{
"indefinite length text string with no chunks",
hexDecode("7fff"),
`""_`,
&DiagOptions{},
},
{
"indefinite length text string with a empty text string",
hexDecode("7f60ff"),
`(_ "")`,
&DiagOptions{},
},
{
"indefinite length text string with two empty text string",
hexDecode("7f6060ff"),
`(_ "", "")`,
&DiagOptions{},
},
}
for _, tc := range testCases {
t.Run(tc.title, func(t *testing.T) {
dm, err := tc.opts.DiagMode()
if err != nil {
t.Errorf("DiagMode() for 0x%x returned error %q", tc.cbor, err)
}
str, err := dm.Diagnose(tc.cbor)
if err != nil {
t.Errorf("Diagnose(0x%x) returned error %q", tc.cbor, err)
} else if str != tc.diag {
t.Errorf("Diagnose(0x%x) returned `%s`, want %s", tc.cbor, str, tc.diag)
}
})
}
}
func TestDiagnoseInvalidTextString(t *testing.T) {
testCases := []struct {
title string
cbor []byte
wantErrorMsg string
opts *DiagOptions
}{
{
"invalid UTF-8 text in text string",
hexDecode("6d68656c6c6fffeee4bda0e5a5bd"),
"invalid UTF-8 string",
&DiagOptions{
ByteStringText: true,
},
},
{
"invalid grapheme cluster text in text string",
hexDecode("783448656c6c6feeff27e29da4efb88fe2808df09f94a5270de4bda0e5a5bdefbc8c22f09fa791e2808df09fa49de2808df09fa79122"),
"invalid UTF-8 string",
&DiagOptions{
ByteStringText: true,
},
},
{
"invalid indefinite length text string",
hexDecode("7f6040ff"),
`wrong element type`,
&DiagOptions{
ByteStringText: true,
},
},
}
for _, tc := range testCases {
t.Run(tc.title, func(t *testing.T) {
dm, err := tc.opts.DiagMode()
if err != nil {
t.Errorf("DiagMode() for 0x%x returned error %q", tc.cbor, err)
}
_, err = dm.Diagnose(tc.cbor)
if err == nil {
t.Errorf("Diagnose(0x%x) didn't return error", tc.cbor)
} else if !strings.Contains(err.Error(), tc.wantErrorMsg) {
t.Errorf("Diagnose(0x%x) returned error %q", tc.cbor, err)
}
})
}
}
func TestDiagnoseFloatingPointNumber(t *testing.T) {
testCases := []struct {
title string
cbor []byte
diag string
opts *DiagOptions
}{
{
"float16 without FloatPrecisionIndicator option",
hexDecode("f93e00"),
`1.5`,
&DiagOptions{
FloatPrecisionIndicator: false,
},
},
{
"float16 with FloatPrecisionIndicator option",
hexDecode("f93e00"),
`1.5_1`,
&DiagOptions{
FloatPrecisionIndicator: true,
},
},
{
"float32 without FloatPrecisionIndicator option",
hexDecode("fa47c35000"),
`100000.0`,
&DiagOptions{
FloatPrecisionIndicator: false,
},
},
{
"float32 with FloatPrecisionIndicator option",
hexDecode("fa47c35000"),
`100000.0_2`,
&DiagOptions{
FloatPrecisionIndicator: true,
},
},
{
"float64 without FloatPrecisionIndicator option",
hexDecode("fbc010666666666666"),
`-4.1`,
&DiagOptions{
FloatPrecisionIndicator: false,
},
},
{
"float64 with FloatPrecisionIndicator option",
hexDecode("fbc010666666666666"),
`-4.1_3`,
&DiagOptions{
FloatPrecisionIndicator: true,
},
},
{
"with FloatPrecisionIndicator option",
hexDecode("c1fb41d452d9ec200000"),
`1(1363896240.5_3)`,
&DiagOptions{
FloatPrecisionIndicator: true,
},
},
}
for _, tc := range testCases {
t.Run(tc.title, func(t *testing.T) {
dm, err := tc.opts.DiagMode()
if err != nil {
t.Errorf("DiagMode() for 0x%x returned error %q", tc.cbor, err)
}
str, err := dm.Diagnose(tc.cbor)
if err != nil {
t.Errorf("Diagnose(0x%x) returned error %q", tc.cbor, err)
} else if str != tc.diag {
t.Errorf("Diagnose(0x%x) returned `%s`, want %s", tc.cbor, str, tc.diag)
}
})
}
}
func TestDiagnoseFirst(t *testing.T) {
testCases := []struct {
title string
cbor []byte
diag string
wantRest []byte
wantErrorMsg string
}{
{
"with no trailing data",
hexDecode("f93e00"),
`1.5`,
[]byte{},
"",
},
{
"with CBOR Sequences",
hexDecode("f93e0064494554464401020304"),
`1.5`,
hexDecode("64494554464401020304"),
"",
},
{
"with invalid CBOR trailing data",
hexDecode("f93e00ff494554464401020304"),
`1.5`,
hexDecode("ff494554464401020304"),
"",
},
{
"with invalid CBOR data",
hexDecode("f93e"),
``,
nil,
"unexpected EOF",
},
}
for _, tc := range testCases {
t.Run(tc.title, func(t *testing.T) {
str, rest, err := DiagnoseFirst(tc.cbor)
if str != tc.diag {
t.Errorf("DiagnoseFirst(0x%x) returned `%s`, want %s", tc.cbor, str, tc.diag)
}
if bytes.Equal(rest, tc.wantRest) == false {
if str != tc.diag {
t.Errorf("DiagnoseFirst(0x%x) returned rest `%x`, want rest %x", tc.cbor, rest, tc.wantRest)
}
}
switch {
case tc.wantErrorMsg == "" && err != nil:
t.Errorf("DiagnoseFirst(0x%x) returned error %q", tc.cbor, err)
case tc.wantErrorMsg != "" && err == nil:
t.Errorf("DiagnoseFirst(0x%x) returned nil error, want error %q", tc.cbor, err)
case tc.wantErrorMsg != "" && !strings.Contains(err.Error(), tc.wantErrorMsg):
t.Errorf("DiagnoseFirst(0x%x) returned error %q, want error %q", tc.cbor, err, tc.wantErrorMsg)
}
})
}
}
func TestDiagnoseCBORSequences(t *testing.T) {
testCases := []struct {
title string
cbor []byte
diag string
opts *DiagOptions
returnError bool
}{
{
"CBOR Sequences without CBORSequence option",
hexDecode("f93e0064494554464401020304"),
``,
&DiagOptions{
CBORSequence: false,
},
true,
},
{
"CBOR Sequences with CBORSequence option",
hexDecode("f93e0064494554464401020304"),
`1.5, "IETF", h'01020304'`,
&DiagOptions{
CBORSequence: true,
},
false,
},
{
"CBOR Sequences with CBORSequence option",
hexDecode("0102"),
`1, 2`,
&DiagOptions{
CBORSequence: true,
},
false,
},
{
"CBOR Sequences with CBORSequence option",
hexDecode("63666F6FF6"),
`"foo", null`,
&DiagOptions{
CBORSequence: true,
},
false,
},
{
"partial/incomplete CBOR Sequences",
hexDecode("f93e00644945544644010203"),
`1.5, "IETF"`,
&DiagOptions{
CBORSequence: true,
},
true,
},
}
for _, tc := range testCases {
t.Run(tc.title, func(t *testing.T) {
dm, err := tc.opts.DiagMode()
if err != nil {
t.Errorf("DiagMode() for 0x%x returned error %q", tc.cbor, err)
}
str, err := dm.Diagnose(tc.cbor)
if tc.returnError && err == nil {
t.Errorf("Diagnose(0x%x) returned error %q", tc.cbor, err)
} else if !tc.returnError && err != nil {
t.Errorf("Diagnose(0x%x) returned error %q", tc.cbor, err)
}
if str != tc.diag {
t.Errorf("Diagnose(0x%x) returned `%s`, want %s", tc.cbor, str, tc.diag)
}
})
}
}
func TestDiagnoseTag(t *testing.T) {
testCases := []struct {
title string
cbor []byte
diag string
opts *DiagOptions
returnError bool
}{
{
"CBOR tag number 2 with not well-formed encoded CBOR data item",
hexDecode("c201"),
``,
&DiagOptions{},
true,
},
{
"CBOR tag number 3 with not well-formed encoded CBOR data item",
hexDecode("c301"),
``,
&DiagOptions{},
true,
},
{
"CBOR tag number 2 with well-formed encoded CBOR data item",
hexDecode("c240"),
`0`,
&DiagOptions{},
false,
},
{
"CBOR tag number 3 with well-formed encoded CBOR data item",
hexDecode("c340"),
`-1`, // -1 - n
&DiagOptions{},
false,
},
{
"CBOR tag number 2 with well-formed encoded CBOR data item",
hexDecode("c249010000000000000000"),
`18446744073709551616`,
&DiagOptions{},
false,
},
{
"CBOR tag number 3 with well-formed encoded CBOR data item",
hexDecode("c349010000000000000000"),
`-18446744073709551617`, // -1 - n
&DiagOptions{},
false,
},
}
for _, tc := range testCases {
t.Run(tc.title, func(t *testing.T) {
dm, err := tc.opts.DiagMode()
if err != nil {
t.Errorf("DiagMode() for 0x%x returned error %q", tc.cbor, err)
}
str, err := dm.Diagnose(tc.cbor)
if tc.returnError && err == nil {
t.Errorf("Diagnose(0x%x) returned error %q", tc.cbor, err)
} else if !tc.returnError && err != nil {
t.Errorf("Diagnose(0x%x) returned error %q", tc.cbor, err)
}
if str != tc.diag {