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
|
# gzip-like LZSS compressor
# Copyright (C) 2018 Pacien TRAN-GIRARD
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import unittest, streams
import bitio/bitwriter
suite "bitwriter":
test "flush":
let stream = newStringStream()
defer: stream.close()
let bitWriter = stream.bitWriter()
bitWriter.writeBool(true)
stream.setPosition(0)
expect IOError: discard stream.peekUint8()
bitWriter.flush()
stream.setPosition(0)
check stream.readUint8() == 0x01'u8
check stream.atEnd()
bitWriter.flush()
check stream.atEnd()
test "writeBool":
let stream = newStringStream()
defer: stream.close()
let bitWriter = stream.bitWriter()
let booleanValues = @[
true, true, true, true, true, false, false, true,
false, false, false, false, false, true, true, false,
true, true, false, true]
for b in booleanValues: bitWriter.writeBool(b)
bitWriter.flush()
stream.setPosition(0)
check stream.readUint8() == 0b1001_1111'u8
check stream.readUint8() == 0b0110_0000'u8
check stream.readUint8() == 0b0000_1011'u8
expect IOError: discard stream.readUint8()
check stream.atEnd()
test "writeBits":
let stream = newStringStream()
defer: stream.close()
let bitWriter = stream.bitWriter()
bitWriter.writeBits(4, 0xF00F'u16)
bitWriter.writeBits(16, 0xF00F'u16)
bitWriter.writeBits(16, 0xFFFF'u16)
bitWriter.flush()
stream.setPosition(0)
check stream.readUint16() == 0x00FF'u16
check stream.readUint16() == 0xFFFF'u16
check stream.readUint8() == 0x0F'u8
expect IOError: discard stream.readUint8()
check stream.atEnd()
test "writeSeq":
let stream = newStringStream()
defer: stream.close()
let bitWriter = stream.bitWriter()
bitWriter.writeSeq(32, @[0xF0F0'u16, 0xF0F0])
bitWriter.writeSeq(28, @[0xFF'u8, 0xF0, 0x00, 0xFF])
bitWriter.flush()
stream.setPosition(0)
check stream.readUint64() == 0x0F00_F0FF_F0F0_F0F0'u64
check stream.atEnd()
|