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
|
/* Test that valid POSIX timezone strings are correctly parsed by tzset(3). */
#include <stdio.h>
#include <stdlib.h>
// BEGIN test vectors
#include <time.h>
#include <limits.h>
#define IN_SECONDS(h, m, s) ((h) * 3600 + (m) * 60 + (s))
#define NO_TIME INT_MIN
struct tz_test {
const char* tzstr;
int offset_seconds;
int dst_offset_seconds;
};
extern struct tm winter_tm;
extern struct tm summer_tm;
extern const time_t winter_time;
extern const time_t summer_time;
extern struct tz_test test_timezones[];
// winter time is March, 21st 2022 at 8:15pm and 20 seconds
struct tm winter_tm = {
.tm_sec = 20,
.tm_min = 15,
.tm_hour = 20,
.tm_mday = 21,
.tm_mon = 3 - 1,
.tm_year = 2022 - 1900,
.tm_isdst = 0
};
// summer time is July, 15th 2022 at 10:50am and 40 seconds
struct tm summer_tm = {
.tm_sec = 40,
.tm_min = 50,
.tm_hour = 10,
.tm_mday = 15,
.tm_mon = 7 - 1,
.tm_year = 2022 - 1900,
.tm_isdst = 1
};
// UTC unix time for the winter time
const time_t winter_time = 1647893720;
const time_t summer_time = 1657882240;
struct tz_test test_timezones[] = {
/*
* creating test vectors based on the POSIX spec (https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_03)
*/
// normal std names
{"MAR1", IN_SECONDS(1, 0, 0), NO_TIME},
{"MAR-1", -IN_SECONDS(1, 0, 0), NO_TIME},
{"MAR+2", IN_SECONDS(2, 0, 0), NO_TIME},
{"MAR7", IN_SECONDS(7, 0, 0), NO_TIME},
{"MAR-7", -IN_SECONDS(7, 0, 0), NO_TIME},
{"MARS5", IN_SECONDS(5, 0, 0), NO_TIME},
{"MARSM5", IN_SECONDS(5, 0, 0), NO_TIME},
{"MARSMOON5", IN_SECONDS(5, 0, 0), NO_TIME}, // assuming TZNAME_MAX >= 8
{"MARS5:23:42", IN_SECONDS(5, 23, 42), NO_TIME},
{"SUN-7:14:24", -IN_SECONDS(7, 14, 24), NO_TIME},
// with DST
{"MAR5SMAR", IN_SECONDS(5, 0, 0), IN_SECONDS(4, 0, 0)}, // only DST name
{"MAR5SMAR2", IN_SECONDS(5, 0, 0), IN_SECONDS(2, 0, 0)}, // DST name with offset
{"MAR3SMAR-3", IN_SECONDS(3, 0, 0), -IN_SECONDS(3, 0, 0)},
{"MARSWINTER4MARSUMMER", IN_SECONDS(4, 0, 0), IN_SECONDS(3, 0, 0)},
{"MARSWINTER4MARSUMMER3", IN_SECONDS(4, 0, 0), IN_SECONDS(3, 0, 0)},
// with DST IN_SECONDSs
{"WMARS3SMARS,J80", IN_SECONDS(3, 0, 0), IN_SECONDS(2, 0, 0)},
{"WMARS3SMARS,J80,J134", IN_SECONDS(3, 0, 0), IN_SECONDS(2, 0, 0)},
{"WMARS3SMARS,79", IN_SECONDS(3, 0, 0), IN_SECONDS(2, 0, 0)},
{"WMARS3SMARS,76,134", IN_SECONDS(3, 0, 0), IN_SECONDS(2, 0, 0)},
{"WMARS3SMARS,76/02,134/03", IN_SECONDS(3, 0, 0), IN_SECONDS(2, 0, 0)},
{"WMARS3SMARS,76/02:15:45,134/03:40:20", IN_SECONDS(3, 0, 0), IN_SECONDS(2, 0, 0)},
{"WMARS3SMARS,M3.4.1/02:15:45,M8.3.1/03:40:20", IN_SECONDS(3, 0, 0), IN_SECONDS(2, 0, 0)},
// special std names
{"<UNK>-1", -IN_SECONDS(1, 0, 0), NO_TIME},
{"<UNKNOWN>-2", -IN_SECONDS(2, 0, 0), NO_TIME}, // require TZNAME_MAX >= 7 + 1
{"<003>3", IN_SECONDS(3, 0, 0), NO_TIME},
{"<+04>4", IN_SECONDS(4, 0, 0), NO_TIME},
{"<-05>-5", -IN_SECONDS(5, 0, 0), NO_TIME},
{"<A-5>6", IN_SECONDS(6, 0, 0), NO_TIME},
{"<+A5>-7", -IN_SECONDS(7, 0, 0), NO_TIME},
{"<0123456>8", IN_SECONDS(8, 0, 0), NO_TIME},
{"<0A1B2C3>9", IN_SECONDS(9, 0, 0), NO_TIME},
{"<RD-04>-4<RD+005>5", -IN_SECONDS(4, 0, 0), IN_SECONDS(5, 0, 0)},
{"<WINT+03>3<SUM+02>", IN_SECONDS(3, 0, 0), IN_SECONDS(2, 0, 0)},
{"<WINT+03>3<SUM+02>2", IN_SECONDS(3, 0, 0), IN_SECONDS(2, 0, 0)},
{"<WINT+03>3:15<SUM+02>2:30:15", IN_SECONDS(3, 15, 0), IN_SECONDS(2, 30, 15)},
{"<H3M15>3:15<H2M30S15>2:30:15", IN_SECONDS(3, 15, 0), IN_SECONDS(2, 30, 15)}, // requires TZNAME_MAX >= 8 + 1
{"<+H6M20S12>6:20:12<-H4M40S14>-4:40:14", IN_SECONDS(6, 20, 12), -IN_SECONDS(4, 40, 14)}, // requires TZNAME_MAX >= 9 + 1
/*
* real-world test vectors.
* IN_SECONDSzones extracted from the tzdb (https://github.com/eggert/tz#2019e).
* The IN_SECONDSzone strings can also be obtained from https://raw.githubusercontent.com/nayarsystems/posix_tz_db/master/zones.csv.
*/
{ /* Etc/GMT-14 */ "<+14>-14", -IN_SECONDS(14, 0, 0), NO_TIME},
{ /* Etc/GMT+12 */ "<-12>12", IN_SECONDS(12, 0, 0), NO_TIME},
{ /* Africa/Casablanca */ "<+01>-1", -IN_SECONDS(1, 0, 0), NO_TIME},
{ /* America/Araguaina */ "<-03>3", IN_SECONDS(3, 0, 0), NO_TIME},
{ /* America/Asuncion */ "<-04>4<-03>,M10.1.0/0,M3.4.0/0", IN_SECONDS(4, 0, 0), IN_SECONDS(3, 0, 0)},
{ /* America/Los_Angeles */ "PST8PDT,M3.2.0,M11.1.0", IN_SECONDS(8, 0, 0), IN_SECONDS(7, 0, 0)},
{ /* America/New_York */ "EST5EDT,M3.2.0,M11.1.0", IN_SECONDS(5, 0, 0), IN_SECONDS(4, 0, 0)},
{ /* America/Scoresbysund */ "<-01>1<+00>,M3.5.0/0,M10.5.0/1", IN_SECONDS(1, 0, 0), IN_SECONDS(0, 0, 0)},
{ /* Asia/Colombo */ "<+0530>-5:30", -IN_SECONDS(5, 30, 0), NO_TIME},
{ /* Europe/Berlin */ "CET-1CEST,M3.5.0,M10.5.0/3", -IN_SECONDS(1, 0, 0), -IN_SECONDS(2, 0, 0)},
/// test parsing errors
// 1. names are too long
{"JUSTEXCEEDI1:11:11", 0, NO_TIME},
{"AVERYLONGNAMEWHICHEXCEEDSTZNAMEMAX2:22:22", 0, NO_TIME},
{"FIRSTVERYLONGNAME3:33:33SECONDVERYLONGNAME4:44:44", 0, 0},
{"<JUSTEXCEEDI>5:55:55", 0, NO_TIME},
{"<FIRSTVERYLONGNAME>3:33:33<SECONDVERYLONGNAME>4:44:44", 0, 0},
{"<+JUSTEXCEED>5:55:55", 0, NO_TIME},
// 2. names are too short
{"JU6:34:47", 0, NO_TIME},
{"HE6:34:47LO3:34:47", 0, 0},
{"<AB>2:34:47", 0, NO_TIME},
{"<AB>2:34:47<CD>3:34:47", 0, 0},
// 3. names contain invalid chars
{"N?ME2:10:56", 0, NO_TIME},
{"N!ME2:10:56", 0, NO_TIME},
{"N/ME2:10:56", 0, NO_TIME},
{"N$ME2:10:56", 0, NO_TIME},
{"NAME?2:10:56", 0, NO_TIME},
{"?NAME2:10:56", 0, NO_TIME},
{"NAME?UNK4:21:15", 0, NO_TIME},
{"NAME!UNK4:22:15NEXT/NAME4:23:15", 0, NO_TIME},
// 4. bogus strings
{"NOINFO", 0, NO_TIME},
{"HOUR:16:18", 0, NO_TIME},
{"<BEGIN", 0, NO_TIME},
{"<NEXT:55", 0, NO_TIME},
{">WRONG<2:15:00", 0, NO_TIME},
{"ST<ART4:30:00", 0, NO_TIME},
//{"MANY8:00:00:00", 0, NO_TIME},
{"\0", 0, NO_TIME},
{"M\0STR7:30:36", 0, NO_TIME}
};
// END test vectors
static int failed = 0;
#define TEST_ASSERT_EQUAL_INT_MESSAGE(...) assert_equal(__VA_ARGS__)
void assert_equal(int lhs, int rhs, const char* msg)
{
if (lhs != rhs)
{
printf("Assertion failed! Expected %d to equal %d. %s\n", lhs, rhs, msg);
++failed;
}
}
void test_TimezoneStrings(void)
{
char buffer[128];
for (int i = 0; i < (sizeof(test_timezones) / sizeof(struct tz_test)); ++i)
{
struct tz_test ptr = test_timezones[i];
setenv("TZ", ptr.tzstr, 1);
tzset();
snprintf(buffer, 128, "winter time, timezone = \"%s\"", ptr.tzstr);
struct tm winter_tm_copy = winter_tm; // copy
TEST_ASSERT_EQUAL_INT_MESSAGE(winter_time + ptr.offset_seconds, mktime(&winter_tm_copy), buffer);
if (ptr.dst_offset_seconds != NO_TIME)
{
snprintf(buffer, 128, "summer time, timezone = \"%s\"", ptr.tzstr);
struct tm summer_tm_copy = summer_tm; // copy
TEST_ASSERT_EQUAL_INT_MESSAGE(summer_time + ptr.dst_offset_seconds, mktime(&summer_tm_copy), buffer);
}
}
}
int main()
{
test_TimezoneStrings();
exit (failed);
}
|
