-
Notifications
You must be signed in to change notification settings - Fork 49
/
scriptnum_tests.cpp
200 lines (172 loc) · 7.29 KB
/
scriptnum_tests.cpp
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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
// Copyright (c) 2012-2017 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <test/scriptnum10.h>
#include <script/script.h>
#include <test/test_xsn.h>
#include <boost/test/unit_test.hpp>
#include <limits.h>
#include <stdint.h>
BOOST_FIXTURE_TEST_SUITE(scriptnum_tests, BasicTestingSetup)
/** A selection of numbers that do not trigger int64_t overflow
* when added/subtracted. */
static const int64_t values[] = { 0, 1, -2, 127, 128, -255, 256, (1LL << 15) - 1, -(1LL << 16), (1LL << 24) - 1, (1LL << 31), 1 - (1LL << 32), 1LL << 40 };
static const int64_t offsets[] = { 1, 0x79, 0x80, 0x81, 0xFF, 0x7FFF, 0x8000, 0xFFFF, 0x10000};
static bool verify(const CScriptNum10& bignum, const CScriptNum& scriptnum)
{
return bignum.getvch() == scriptnum.getvch() && bignum.getint() == scriptnum.getint();
}
static void CheckCreateVch(const int64_t& num)
{
CScriptNum10 bignum(num);
CScriptNum scriptnum(num);
BOOST_CHECK(verify(bignum, scriptnum));
CScriptNum10 bignum2(bignum.getvch(), false);
CScriptNum scriptnum2(scriptnum.getvch(), false);
BOOST_CHECK(verify(bignum2, scriptnum2));
CScriptNum10 bignum3(scriptnum2.getvch(), false);
CScriptNum scriptnum3(bignum2.getvch(), false);
BOOST_CHECK(verify(bignum3, scriptnum3));
}
static void CheckCreateInt(const int64_t& num)
{
CScriptNum10 bignum(num);
CScriptNum scriptnum(num);
BOOST_CHECK(verify(bignum, scriptnum));
BOOST_CHECK(verify(CScriptNum10(bignum.getint()), CScriptNum(scriptnum.getint())));
BOOST_CHECK(verify(CScriptNum10(scriptnum.getint()), CScriptNum(bignum.getint())));
BOOST_CHECK(verify(CScriptNum10(CScriptNum10(scriptnum.getint()).getint()), CScriptNum(CScriptNum(bignum.getint()).getint())));
}
static void CheckAdd(const int64_t& num1, const int64_t& num2)
{
const CScriptNum10 bignum1(num1);
const CScriptNum10 bignum2(num2);
const CScriptNum scriptnum1(num1);
const CScriptNum scriptnum2(num2);
CScriptNum10 bignum3(num1);
CScriptNum10 bignum4(num1);
CScriptNum scriptnum3(num1);
CScriptNum scriptnum4(num1);
// int64_t overflow is undefined.
bool invalid = (((num2 > 0) && (num1 > (std::numeric_limits<int64_t>::max() - num2))) ||
((num2 < 0) && (num1 < (std::numeric_limits<int64_t>::min() - num2))));
if (!invalid)
{
BOOST_CHECK(verify(bignum1 + bignum2, scriptnum1 + scriptnum2));
BOOST_CHECK(verify(bignum1 + bignum2, scriptnum1 + num2));
BOOST_CHECK(verify(bignum1 + bignum2, scriptnum2 + num1));
}
}
static void CheckNegate(const int64_t& num)
{
const CScriptNum10 bignum(num);
const CScriptNum scriptnum(num);
// -INT64_MIN is undefined
if (num != std::numeric_limits<int64_t>::min())
BOOST_CHECK(verify(-bignum, -scriptnum));
}
static void CheckSubtract(const int64_t& num1, const int64_t& num2)
{
const CScriptNum10 bignum1(num1);
const CScriptNum10 bignum2(num2);
const CScriptNum scriptnum1(num1);
const CScriptNum scriptnum2(num2);
// int64_t overflow is undefined.
bool invalid = ((num2 > 0 && num1 < std::numeric_limits<int64_t>::min() + num2) ||
(num2 < 0 && num1 > std::numeric_limits<int64_t>::max() + num2));
if (!invalid)
{
BOOST_CHECK(verify(bignum1 - bignum2, scriptnum1 - scriptnum2));
BOOST_CHECK(verify(bignum1 - bignum2, scriptnum1 - num2));
}
invalid = ((num1 > 0 && num2 < std::numeric_limits<int64_t>::min() + num1) ||
(num1 < 0 && num2 > std::numeric_limits<int64_t>::max() + num1));
if (!invalid)
{
BOOST_CHECK(verify(bignum2 - bignum1, scriptnum2 - scriptnum1));
BOOST_CHECK(verify(bignum2 - bignum1, scriptnum2 - num1));
}
}
static void CheckCompare(const int64_t& num1, const int64_t& num2)
{
const CScriptNum10 bignum1(num1);
const CScriptNum10 bignum2(num2);
const CScriptNum scriptnum1(num1);
const CScriptNum scriptnum2(num2);
BOOST_CHECK((bignum1 == bignum1) == (scriptnum1 == scriptnum1));
BOOST_CHECK((bignum1 != bignum1) == (scriptnum1 != scriptnum1));
BOOST_CHECK((bignum1 < bignum1) == (scriptnum1 < scriptnum1));
BOOST_CHECK((bignum1 > bignum1) == (scriptnum1 > scriptnum1));
BOOST_CHECK((bignum1 >= bignum1) == (scriptnum1 >= scriptnum1));
BOOST_CHECK((bignum1 <= bignum1) == (scriptnum1 <= scriptnum1));
BOOST_CHECK((bignum1 == bignum1) == (scriptnum1 == num1));
BOOST_CHECK((bignum1 != bignum1) == (scriptnum1 != num1));
BOOST_CHECK((bignum1 < bignum1) == (scriptnum1 < num1));
BOOST_CHECK((bignum1 > bignum1) == (scriptnum1 > num1));
BOOST_CHECK((bignum1 >= bignum1) == (scriptnum1 >= num1));
BOOST_CHECK((bignum1 <= bignum1) == (scriptnum1 <= num1));
BOOST_CHECK((bignum1 == bignum2) == (scriptnum1 == scriptnum2));
BOOST_CHECK((bignum1 != bignum2) == (scriptnum1 != scriptnum2));
BOOST_CHECK((bignum1 < bignum2) == (scriptnum1 < scriptnum2));
BOOST_CHECK((bignum1 > bignum2) == (scriptnum1 > scriptnum2));
BOOST_CHECK((bignum1 >= bignum2) == (scriptnum1 >= scriptnum2));
BOOST_CHECK((bignum1 <= bignum2) == (scriptnum1 <= scriptnum2));
BOOST_CHECK((bignum1 == bignum2) == (scriptnum1 == num2));
BOOST_CHECK((bignum1 != bignum2) == (scriptnum1 != num2));
BOOST_CHECK((bignum1 < bignum2) == (scriptnum1 < num2));
BOOST_CHECK((bignum1 > bignum2) == (scriptnum1 > num2));
BOOST_CHECK((bignum1 >= bignum2) == (scriptnum1 >= num2));
BOOST_CHECK((bignum1 <= bignum2) == (scriptnum1 <= num2));
}
static void RunCreate(const int64_t& num)
{
CheckCreateInt(num);
CScriptNum scriptnum(num);
if (scriptnum.getvch().size() <= CScriptNum::nDefaultMaxNumSize)
CheckCreateVch(num);
else
{
BOOST_CHECK_THROW (CheckCreateVch(num), scriptnum10_error);
}
}
static void RunOperators(const int64_t& num1, const int64_t& num2)
{
CheckAdd(num1, num2);
CheckSubtract(num1, num2);
CheckNegate(num1);
CheckCompare(num1, num2);
}
BOOST_AUTO_TEST_CASE(creation)
{
for(size_t i = 0; i < sizeof(values) / sizeof(values[0]); ++i)
{
for(size_t j = 0; j < sizeof(offsets) / sizeof(offsets[0]); ++j)
{
RunCreate(values[i]);
RunCreate(values[i] + offsets[j]);
RunCreate(values[i] - offsets[j]);
}
}
}
BOOST_AUTO_TEST_CASE(operators)
{
for(size_t i = 0; i < sizeof(values) / sizeof(values[0]); ++i)
{
for(size_t j = 0; j < sizeof(offsets) / sizeof(offsets[0]); ++j)
{
RunOperators(values[i], values[i]);
RunOperators(values[i], -values[i]);
RunOperators(values[i], values[j]);
RunOperators(values[i], -values[j]);
RunOperators(values[i] + values[j], values[j]);
RunOperators(values[i] + values[j], -values[j]);
RunOperators(values[i] - values[j], values[j]);
RunOperators(values[i] - values[j], -values[j]);
RunOperators(values[i] + values[j], values[i] + values[j]);
RunOperators(values[i] + values[j], values[i] - values[j]);
RunOperators(values[i] - values[j], values[i] + values[j]);
RunOperators(values[i] - values[j], values[i] - values[j]);
}
}
}
BOOST_AUTO_TEST_SUITE_END()