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Add tests for tzset POSIX timezone string compliance 

- patch from jdbouleu <hi@jdoubleu.de>

  - create time.exp and tzset.c files in newlib/testsuite/newlib.time
This commit is contained in:
Jeff Johnston 2022-04-08 17:19:16 -04:00
parent 539ac66ffa
commit db1fbbc495
2 changed files with 175 additions and 0 deletions
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12
newlib/testsuite/newlib.time/time.exp Normal file
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# Copyright (C) 2022 jdoubleu. All rights reserved.
#
# Permission to use, copy, modify, and distribute this software
# is freely granted, provided that this notice is preserved.
#
load_lib passfail.exp
set exclude_list {
}
newlib_pass_fail_all -x $exclude_list

163
newlib/testsuite/newlib.time/tzset.c Normal file
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/* 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
{"<+0123456789ABCDEF>3:33:33", IN_SECONDS(3, 33, 33), NO_TIME}, // truncates the name (17 + 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)},
// END of list
{NULL, NO_TIME, NO_TIME}
};
// helper macros
#define FOR_TIMEZONES(iter_name) for (struct tz_test* iter_name = test_timezones; iter_name->tzstr != NULL; ++iter_name)
// 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_TIMEZONES(ptr)
{
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);
}