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// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package hexutil
import (
"bytes"
"math/big"
"testing"
)
type marshalTest struct {
input interface{}
want string
}
type unmarshalTest struct {
input string
want interface{}
wantErr error // if set, decoding must fail on any platform
wantErr32bit error // if set, decoding must fail on 32bit platforms (used for Uint tests)
}
var (
encodeBytesTests = []marshalTest{
{[]byte{}, "0x"},
{[]byte{0}, "0x00"},
{[]byte{0, 0, 1, 2}, "0x00000102"},
}
encodeBigTests = []marshalTest{
{referenceBig("0"), "0x0"},
{referenceBig("1"), "0x1"},
{referenceBig("ff"), "0xff"},
{referenceBig("112233445566778899aabbccddeeff"), "0x112233445566778899aabbccddeeff"},
{referenceBig("80a7f2c1bcc396c00"), "0x80a7f2c1bcc396c00"},
}
encodeUint64Tests = []marshalTest{
{uint64(0), "0x0"},
{uint64(1), "0x1"},
{uint64(0xff), "0xff"},
{uint64(0x1122334455667788), "0x1122334455667788"},
}
encodeUintTests = []marshalTest{
{uint(0), "0x0"},
{uint(1), "0x1"},
{uint(0xff), "0xff"},
{uint(0x11223344), "0x11223344"},
}
decodeBytesTests = []unmarshalTest{
// invalid
{input: ``, wantErr: ErrEmptyString},
{input: `0`, wantErr: ErrMissingPrefix},
{input: `0x0`, wantErr: ErrOddLength},
{input: `0x023`, wantErr: ErrOddLength},
{input: `0xxx`, wantErr: ErrSyntax},
{input: `0x01zz01`, wantErr: ErrSyntax},
// valid
{input: `0x`, want: []byte{}},
{input: `0X`, want: []byte{}},
{input: `0x02`, want: []byte{0x02}},
{input: `0X02`, want: []byte{0x02}},
{input: `0xffffffffff`, want: []byte{0xff, 0xff, 0xff, 0xff, 0xff}},
{
input: `0xffffffffffffffffffffffffffffffffffff`,
want: []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
},
}
decodeBigTests = []unmarshalTest{
// invalid
{input: `0`, wantErr: ErrMissingPrefix},
{input: `0x`, wantErr: ErrEmptyNumber},
{input: `0x01`, wantErr: ErrLeadingZero},
{input: `0xx`, wantErr: ErrSyntax},
{input: `0x1zz01`, wantErr: ErrSyntax},
{
input: `0x10000000000000000000000000000000000000000000000000000000000000000`,
wantErr: ErrBig256Range,
},
// valid
{input: `0x0`, want: big.NewInt(0)},
{input: `0x2`, want: big.NewInt(0x2)},
{input: `0x2F2`, want: big.NewInt(0x2f2)},
{input: `0X2F2`, want: big.NewInt(0x2f2)},
{input: `0x1122aaff`, want: big.NewInt(0x1122aaff)},
{input: `0xbBb`, want: big.NewInt(0xbbb)},
{input: `0xfffffffff`, want: big.NewInt(0xfffffffff)},
{
input: `0x112233445566778899aabbccddeeff`,
want: referenceBig("112233445566778899aabbccddeeff"),
},
{
input: `0xffffffffffffffffffffffffffffffffffff`,
want: referenceBig("ffffffffffffffffffffffffffffffffffff"),
},
{
input: `0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff`,
want: referenceBig("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"),
},
}
decodeUint64Tests = []unmarshalTest{
// invalid
{input: `0`, wantErr: ErrMissingPrefix},
{input: `0x`, wantErr: ErrEmptyNumber},
{input: `0x01`, wantErr: ErrLeadingZero},
{input: `0xfffffffffffffffff`, wantErr: ErrUint64Range},
{input: `0xx`, wantErr: ErrSyntax},
{input: `0x1zz01`, wantErr: ErrSyntax},
// valid
{input: `0x0`, want: uint64(0)},
{input: `0x2`, want: uint64(0x2)},
{input: `0x2F2`, want: uint64(0x2f2)},
{input: `0X2F2`, want: uint64(0x2f2)},
{input: `0x1122aaff`, want: uint64(0x1122aaff)},
{input: `0xbbb`, want: uint64(0xbbb)},
{input: `0xffffffffffffffff`, want: uint64(0xffffffffffffffff)},
}
)
func TestEncode(t *testing.T) {
for _, test := range encodeBytesTests {
enc := Encode(test.input.([]byte))
if enc != test.want {
t.Errorf("input %x: wrong encoding %s", test.input, enc)
}
}
}
func TestDecode(t *testing.T) {
for _, test := range decodeBytesTests {
dec, err := Decode(test.input)
if !checkError(t, test.input, err, test.wantErr) {
continue
}
if !bytes.Equal(test.want.([]byte), dec) {
t.Errorf("input %s: value mismatch: got %x, want %x", test.input, dec, test.want)
continue
}
}
}
func TestEncodeBig(t *testing.T) {
for _, test := range encodeBigTests {
enc := EncodeBig(test.input.(*big.Int))
if enc != test.want {
t.Errorf("input %x: wrong encoding %s", test.input, enc)
}
}
}
func TestDecodeBig(t *testing.T) {
for _, test := range decodeBigTests {
dec, err := DecodeBig(test.input)
if !checkError(t, test.input, err, test.wantErr) {
continue
}
if dec.Cmp(test.want.(*big.Int)) != 0 {
t.Errorf("input %s: value mismatch: got %x, want %x", test.input, dec, test.want)
continue
}
}
}
func TestEncodeUint64(t *testing.T) {
for _, test := range encodeUint64Tests {
enc := EncodeUint64(test.input.(uint64))
if enc != test.want {
t.Errorf("input %x: wrong encoding %s", test.input, enc)
}
}
}
func TestDecodeUint64(t *testing.T) {
for _, test := range decodeUint64Tests {
dec, err := DecodeUint64(test.input)
if !checkError(t, test.input, err, test.wantErr) {
continue
}
if dec != test.want.(uint64) {
t.Errorf("input %s: value mismatch: got %x, want %x", test.input, dec, test.want)
continue
}
}
}
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