/usr/share/gocode/src/gopkg.in/asn1-ber.v1/length_test.go is in golang-gopkg-asn1-ber.v1-dev 1.2-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 | package ber
import (
"bytes"
"io"
"math"
"testing"
)
func TestReadLength(t *testing.T) {
testcases := map[string]struct {
Data []byte
ExpectedLength int64
ExpectedBytesRead int
ExpectedError string
}{
"empty": {
Data: []byte{},
ExpectedBytesRead: 0,
ExpectedError: io.ErrUnexpectedEOF.Error(),
},
"invalid first byte": {
Data: []byte{0xFF},
ExpectedBytesRead: 1,
ExpectedError: "invalid length byte 0xff",
},
"indefinite form": {
Data: []byte{LengthLongFormBitmask},
ExpectedLength: LengthIndefinite,
ExpectedBytesRead: 1,
},
"short-definite-form zero length": {
Data: []byte{0},
ExpectedLength: 0,
ExpectedBytesRead: 1,
},
"short-definite-form length 1": {
Data: []byte{1},
ExpectedLength: 1,
ExpectedBytesRead: 1,
},
"short-definite-form max length": {
Data: []byte{127},
ExpectedLength: 127,
ExpectedBytesRead: 1,
},
"long-definite-form missing bytes": {
Data: []byte{LengthLongFormBitmask | 1},
ExpectedBytesRead: 1,
ExpectedError: io.ErrUnexpectedEOF.Error(),
},
"long-definite-form overflow": {
Data: []byte{LengthLongFormBitmask | 9},
ExpectedBytesRead: 1,
ExpectedError: "long-form length overflow",
},
"long-definite-form zero length": {
Data: []byte{LengthLongFormBitmask | 1, 0x0},
ExpectedLength: 0,
ExpectedBytesRead: 2,
},
"long-definite-form length 127": {
Data: []byte{LengthLongFormBitmask | 1, 127},
ExpectedLength: 127,
ExpectedBytesRead: 2,
},
"long-definite-form max length (32-bit)": {
Data: []byte{
LengthLongFormBitmask | 4,
0x7F,
0xFF,
0xFF,
0xFF,
0xFF,
},
ExpectedLength: math.MaxInt32,
ExpectedBytesRead: 5,
},
"long-definite-form max length (64-bit)": {
Data: []byte{
LengthLongFormBitmask | 8,
0x7F,
0xFF,
0xFF,
0xFF,
0xFF,
0xFF,
0xFF,
0xFF,
},
ExpectedLength: math.MaxInt64,
ExpectedBytesRead: 9,
},
}
for k, tc := range testcases {
// Skip tests requiring 64-bit integers on platforms that don't support them
if tc.ExpectedLength != int64(int(tc.ExpectedLength)) {
continue
}
reader := bytes.NewBuffer(tc.Data)
length, read, err := readLength(reader)
if err != nil {
if tc.ExpectedError == "" {
t.Errorf("%s: unexpected error: %v", k, err)
} else if err.Error() != tc.ExpectedError {
t.Errorf("%s: expected error %v, got %v", k, tc.ExpectedError, err)
}
} else if tc.ExpectedError != "" {
t.Errorf("%s: expected error %v, got none", k, tc.ExpectedError)
continue
}
if read != tc.ExpectedBytesRead {
t.Errorf("%s: expected read %d, got %d", k, tc.ExpectedBytesRead, read)
}
if int64(length) != tc.ExpectedLength {
t.Errorf("%s: expected length %d, got %d", k, tc.ExpectedLength, length)
}
}
}
func TestEncodeLength(t *testing.T) {
testcases := map[string]struct {
Length int64
ExpectedBytes []byte
}{
"0": {
Length: 0,
ExpectedBytes: []byte{0},
},
"1": {
Length: 1,
ExpectedBytes: []byte{1},
},
"max short-form length": {
Length: 127,
ExpectedBytes: []byte{127},
},
"min long-form length": {
Length: 128,
ExpectedBytes: []byte{LengthLongFormBitmask | 1, 128},
},
"max long-form length (32-bit)": {
Length: math.MaxInt32,
ExpectedBytes: []byte{
LengthLongFormBitmask | 4,
0x7F,
0xFF,
0xFF,
0xFF,
},
},
"max long-form length (64-bit)": {
Length: math.MaxInt64,
ExpectedBytes: []byte{
LengthLongFormBitmask | 8,
0x7F,
0xFF,
0xFF,
0xFF,
0xFF,
0xFF,
0xFF,
0xFF,
},
},
}
for k, tc := range testcases {
// Skip tests requiring 64-bit integers on platforms that don't support them
if tc.Length != int64(int(tc.Length)) {
continue
}
b := encodeLength(int(tc.Length))
if bytes.Compare(tc.ExpectedBytes, b) != 0 {
t.Errorf("%s: Expected\n\t%#v\ngot\n\t%#v", k, tc.ExpectedBytes, b)
}
}
}
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