func TestParsePktLen(t *testing.T) {
tests := []struct {
in string
wantLen int
wantErr error
}{
// Valid pkt-len.
{"00a5", 165, nil},
{"01a5", 421, nil},
{"0032", 50, nil},
{"000b", 11, nil},
{"000B", 11, nil},
// Valud flush-pkt.
{"0000", 0, nil},
{"0001", 0, errors.New("invalid pkt-len: 1")},
{"0003", 0, errors.New("invalid pkt-len: 3")},
{"abyz", 0, hex.InvalidByteError('y')},
{"-<%^", 0, hex.InvalidByteError('-')},
// Maximum length.
{"fff4", 65524, nil},
{"fff5", 0, errors.New("invalid pkt-len: 65525")},
{"ffff", 0, errors.New("invalid pkt-len: 65535")},
}
for _, tt := range tests {
gotLen, gotErr := parsePktLen([]byte(tt.in))
if gotLen != tt.wantLen || !reflect.DeepEqual(gotErr, tt.wantErr) {
t.Errorf("test %q:\n got: %#v, %#v\nwant: %#v, %#v\n", tt.in, gotLen, gotErr, tt.wantLen, tt.wantErr)
}
}
}
// ParseHex creates a UUID object from given hex string
// representation. Function accepts UUID string in following
// formats:
//
// uuid.ParseHex("6ba7b814-9dad-11d1-80b4-00c04fd430c8")
// uuid.ParseHex("{6ba7b814-9dad-11d1-80b4-00c04fd430c8}")
// uuid.ParseHex("urn:uuid:6ba7b814-9dad-11d1-80b4-00c04fd430c8")
//
func ParseHex(s string) (u *UUID, err error) {
if strings.HasPrefix(s, urnUuidPrefix) {
s = s[len(urnUuidPrefix):]
}
if strings.HasPrefix(s, "{") {
if !strings.HasSuffix(s, "}") {
err = errors.New("Invalid UUID string has an opening '{' bracket but no closing '}' bracket")
return
} else if len(s) != 38 {
err = errors.New("Invalid UUID string")
return
}
s = s[1:37]
} else if strings.HasSuffix(s, "}") {
err = errors.New("Invalid UUID string has no opening '{' bracket but does have a closing '}' bracket")
return
} else if len(s) != 36 {
err = errors.New("Invalid UUID string")
return
}
var a, b byte
var half bool
u = new(UUID)
v := u[0:0]
for i, c := range []byte(s) {
if i == 8 || i == 13 || i == 18 || i == 23 {
if c != dash {
return nil, errors.New("Invalid UUID string had an improper character where '-' expected")
}
continue
}
switch {
case '0' <= c && c <= '9':
b = c - '0'
case 'a' <= c && c <= 'f':
b = c - 'a' + 10
default:
return nil, hex.InvalidByteError(i)
}
if half {
v = append(v, (a<<4)|b)
} else {
a = b
}
half = !half
}
return
}
// TestNewShaHashFromStr executes tests against the NewShaHashFromStr function.
func TestNewShaHashFromStr(t *testing.T) {
tests := []struct {
in string
want btcwire.ShaHash
err error
}{
// Genesis hash.
{
"000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f",
btcwire.GenesisHash,
nil,
},
// Genesis hash with stripped leading zeros.
{
"19d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f",
btcwire.GenesisHash,
nil,
},
// Single digit hash.
{
"1",
btcwire.ShaHash{
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
},
nil,
},
// Block 203707 with stripped leading zeros.
{
"3264bc2ac36a60840790ba1d475d01367e7c723da941069e9dc",
btcwire.ShaHash{
0xdc, 0xe9, 0x69, 0x10, 0x94, 0xda, 0x23, 0xc7,
0xe7, 0x67, 0x13, 0xd0, 0x75, 0xd4, 0xa1, 0x0b,
0x79, 0x40, 0x08, 0xa6, 0x36, 0xac, 0xc2, 0x4b,
0x26, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
},
nil,
},
// Hash string that is too long.
{
"01234567890123456789012345678901234567890123456789012345678912345",
btcwire.ShaHash{},
btcwire.ErrHashStrSize,
},
// Hash string that is contains non-hex chars.
{
"abcdefg",
btcwire.ShaHash{},
hex.InvalidByteError('g'),
},
}
unexpectedErrStr := "NewShaHashFromStr #%d failed to detect expected error - got: %v want: %v"
unexpectedResultStr := "NewShaHashFromStr #%d got: %v want: %v"
t.Logf("Running %d tests", len(tests))
for i, test := range tests {
result, err := btcwire.NewShaHashFromStr(test.in)
if err != test.err {
t.Errorf(unexpectedErrStr, i, err, test.err)
continue
} else if err != nil {
// Got expected error. Move on to the next test.
continue
}
if !test.want.IsEqual(result) {
t.Errorf(unexpectedResultStr, i, result, &test.want)
continue
}
}
}
