/usr/share/gocode/src/gopkg.in/asn1-ber.v1/header_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 | package ber
import (
"bytes"
"io"
"testing"
)
func TestReadHeader(t *testing.T) {
testcases := map[string]struct {
Data []byte
ExpectedIdentifier Identifier
ExpectedLength int
ExpectedBytesRead int
ExpectedError string
}{
"empty": {
Data: []byte{},
ExpectedIdentifier: Identifier{},
ExpectedLength: 0,
ExpectedBytesRead: 0,
ExpectedError: io.ErrUnexpectedEOF.Error(),
},
"valid short form": {
Data: []byte{
byte(ClassUniversal) | byte(TypePrimitive) | byte(TagCharacterString),
127,
},
ExpectedIdentifier: Identifier{
ClassType: ClassUniversal,
TagType: TypePrimitive,
Tag: TagCharacterString,
},
ExpectedLength: 127,
ExpectedBytesRead: 2,
ExpectedError: "",
},
"valid long form": {
Data: []byte{
// 2-byte encoding of tag
byte(ClassUniversal) | byte(TypePrimitive) | byte(HighTag),
byte(TagCharacterString),
// 2-byte encoding of length
LengthLongFormBitmask | 1,
127,
},
ExpectedIdentifier: Identifier{
ClassType: ClassUniversal,
TagType: TypePrimitive,
Tag: TagCharacterString,
},
ExpectedLength: 127,
ExpectedBytesRead: 4,
ExpectedError: "",
},
"valid indefinite length": {
Data: []byte{
byte(ClassUniversal) | byte(TypeConstructed) | byte(TagCharacterString),
LengthLongFormBitmask,
},
ExpectedIdentifier: Identifier{
ClassType: ClassUniversal,
TagType: TypeConstructed,
Tag: TagCharacterString,
},
ExpectedLength: LengthIndefinite,
ExpectedBytesRead: 2,
ExpectedError: "",
},
"invalid indefinite length": {
Data: []byte{
byte(ClassUniversal) | byte(TypePrimitive) | byte(TagCharacterString),
LengthLongFormBitmask,
},
ExpectedIdentifier: Identifier{},
ExpectedLength: 0,
ExpectedBytesRead: 2,
ExpectedError: "indefinite length used with primitive type",
},
}
for k, tc := range testcases {
reader := bytes.NewBuffer(tc.Data)
identifier, length, read, err := readHeader(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 identifier.ClassType != tc.ExpectedIdentifier.ClassType {
t.Errorf("%s: expected class type %d (%s), got %d (%s)", k,
tc.ExpectedIdentifier.ClassType,
ClassMap[tc.ExpectedIdentifier.ClassType],
identifier.ClassType,
ClassMap[identifier.ClassType],
)
}
if identifier.TagType != tc.ExpectedIdentifier.TagType {
t.Errorf("%s: expected tag type %d (%s), got %d (%s)", k,
tc.ExpectedIdentifier.TagType,
TypeMap[tc.ExpectedIdentifier.TagType],
identifier.TagType,
TypeMap[identifier.TagType],
)
}
if identifier.Tag != tc.ExpectedIdentifier.Tag {
t.Errorf("%s: expected tag %d (%s), got %d (%s)", k,
tc.ExpectedIdentifier.Tag,
tagMap[tc.ExpectedIdentifier.Tag],
identifier.Tag,
tagMap[identifier.Tag],
)
}
if length != tc.ExpectedLength {
t.Errorf("%s: expected length %d, got %d", k, tc.ExpectedLength, length)
}
}
}
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