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