1 // NNCP -- Node to Node copy, utilities for store-and-forward data exchange
2 // Copyright (C) 2016-2024 Sergey Matveev <stargrave@stargrave.org>
4 // This program is free software: you can redistribute it and/or modify
5 // it under the terms of the GNU General Public License as published by
6 // the Free Software Foundation, version 3 of the License.
8 // This program is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 // GNU General Public License for more details.
13 // You should have received a copy of the GNU General Public License
14 // along with this program. If not, see <http://www.gnu.org/licenses/>.
24 "lukechampine.com/blake3"
27 func TestMTHSeqSymmetric(t *testing.T) {
28 xof := blake3.New(32, nil).XOF()
29 f := func(size uint32, offset uint32) bool {
30 size %= 2 * 1024 * 1024
31 data := make([]byte, int(size), int(size)+1)
32 if _, err := io.ReadFull(xof, data); err != nil {
35 offset = offset % size
37 mth := MTHSeqNew(int64(size), 0)
38 if _, err := io.Copy(mth, bytes.NewReader(data)); err != nil {
43 mth = MTHSeqNew(int64(size), int64(offset))
44 if _, err := io.Copy(mth, bytes.NewReader(data[int(offset):])); err != nil {
47 if _, err := mth.PreaddFrom(bytes.NewReader(data), "", false); err != nil {
50 if !bytes.Equal(hsh0, mth.Sum(nil)) {
56 if !bytes.Equal(hsh0, mth.Sum(nil)) {
60 data = append(data, 0)
61 mth = MTHSeqNew(int64(size)+1, 0)
62 if _, err := io.Copy(mth, bytes.NewReader(data)); err != nil {
66 if bytes.Equal(hsh0, hsh00) {
70 mth = MTHSeqNew(int64(size)+1, int64(offset))
71 if _, err := io.Copy(mth, bytes.NewReader(data[int(offset):])); err != nil {
74 if _, err := mth.PreaddFrom(bytes.NewReader(data), "", false); err != nil {
77 if !bytes.Equal(hsh00, mth.Sum(nil)) {
83 return bytes.Equal(hsh00, mth.Sum(nil))
85 if err := quick.Check(f, nil); err != nil {
90 func TestMTHSeqAndFatEqual(t *testing.T) {
91 xof := blake3.New(32, nil).XOF()
92 f := func(size uint32, offset uint32) bool {
93 size %= 10 * 1024 * 1024
94 data := make([]byte, int(size), int(size)+1)
95 if _, err := io.ReadFull(xof, data); err != nil {
99 if _, err := io.Copy(fat, bytes.NewReader(data)); err != nil {
102 hshFat := fat.Sum(nil)
103 seq := MTHSeqNew(int64(size), 0)
104 if _, err := io.Copy(seq, bytes.NewReader(data)); err != nil {
107 return bytes.Equal(hshFat, seq.Sum(nil))
109 if err := quick.Check(f, nil); err != nil {
114 func TestMTHNull(t *testing.T) {
116 if _, err := fat.Write(nil); err != nil {
119 hshFat := fat.Sum(nil)
121 seq := MTHSeqNew(0, 0)
122 if _, err := seq.Write(nil); err != nil {
125 if !bytes.Equal(hshFat, seq.Sum(nil)) {