diff options
Diffstat (limited to 'time')
| -rw-r--r-- | time/Makefile | 2 | ||||
| -rw-r--r-- | time/tst-gmtime.c | 124 |
2 files changed, 125 insertions, 1 deletions
diff --git a/time/Makefile b/time/Makefile index 91cb02a003..a503297527 100644 --- a/time/Makefile +++ b/time/Makefile @@ -49,7 +49,7 @@ tests := test_time clocktest tst-posixtz tst-strptime tst_wcsftime \ tst-tzname tst-y2039 bug-mktime4 tst-strftime2 tst-strftime3 \ tst-clock tst-clock2 tst-clock_nanosleep tst-cpuclock1 \ tst-adjtime tst-ctime tst-difftime tst-mktime4 tst-clock_settime \ - tst-settimeofday tst-itimer + tst-settimeofday tst-itimer tst-gmtime include ../Rules diff --git a/time/tst-gmtime.c b/time/tst-gmtime.c new file mode 100644 index 0000000000..976f7c93ca --- /dev/null +++ b/time/tst-gmtime.c @@ -0,0 +1,124 @@ +/* Basic tests for gmtime. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <time.h> +#include <stdlib.h> +#include <support/check.h> + +static int +do_test (void) +{ + /* Check if the epoch time can be converted. */ + { + time_t t = 0; + struct tm *tmg = gmtime (&t); + TEST_COMPARE (tmg->tm_sec, 0); + TEST_COMPARE (tmg->tm_min, 0); + TEST_COMPARE (tmg->tm_hour, 0); + TEST_COMPARE (tmg->tm_mday, 1); + TEST_COMPARE (tmg->tm_mon, 0); + TEST_COMPARE (tmg->tm_year, 70); + TEST_COMPARE (tmg->tm_wday, 4); + TEST_COMPARE (tmg->tm_yday, 0); + TEST_COMPARE (tmg->tm_isdst, 0); + } + { + /* Same as before but with gmtime_r. */ + time_t t = 0; + struct tm tms; + struct tm *tmg = gmtime_r (&t, &tms); + TEST_VERIFY (tmg == &tms); + TEST_COMPARE (tmg->tm_sec, 0); + TEST_COMPARE (tmg->tm_min, 0); + TEST_COMPARE (tmg->tm_hour, 0); + TEST_COMPARE (tmg->tm_mday, 1); + TEST_COMPARE (tmg->tm_mon, 0); + TEST_COMPARE (tmg->tm_year, 70); + TEST_COMPARE (tmg->tm_wday, 4); + TEST_COMPARE (tmg->tm_yday, 0); + TEST_COMPARE (tmg->tm_isdst, 0); + } + + /* Check if the max time value for 32 bit time_t can be converted. */ + { + time_t t = 0x7fffffff; + struct tm *tmg = gmtime (&t); + TEST_COMPARE (tmg->tm_sec, 7); + TEST_COMPARE (tmg->tm_min, 14); + TEST_COMPARE (tmg->tm_hour, 3); + TEST_COMPARE (tmg->tm_mday, 19); + TEST_COMPARE (tmg->tm_mon, 0); + TEST_COMPARE (tmg->tm_year, 138); + TEST_COMPARE (tmg->tm_wday, 2); + TEST_COMPARE (tmg->tm_yday, 18); + TEST_COMPARE (tmg->tm_isdst, 0); + } + { + /* Same as before but with ctime_r. */ + time_t t = 0x7fffffff; + struct tm tms; + struct tm *tmg = gmtime_r (&t, &tms); + TEST_VERIFY (tmg == &tms); + TEST_COMPARE (tmg->tm_sec, 7); + TEST_COMPARE (tmg->tm_min, 14); + TEST_COMPARE (tmg->tm_hour, 3); + TEST_COMPARE (tmg->tm_mday, 19); + TEST_COMPARE (tmg->tm_mon, 0); + TEST_COMPARE (tmg->tm_year, 138); + TEST_COMPARE (tmg->tm_wday, 2); + TEST_COMPARE (tmg->tm_yday, 18); + TEST_COMPARE (tmg->tm_isdst, 0); + } + + if (sizeof (time_t) < 8) + return 0; + + { + time_t t = (time_t) 0x80000000ull; + struct tm *tmg = gmtime (&t); + TEST_COMPARE (tmg->tm_sec, 8); + TEST_COMPARE (tmg->tm_min, 14); + TEST_COMPARE (tmg->tm_hour, 3); + TEST_COMPARE (tmg->tm_mday, 19); + TEST_COMPARE (tmg->tm_mon, 0); + TEST_COMPARE (tmg->tm_year, 138); + TEST_COMPARE (tmg->tm_wday, 2); + TEST_COMPARE (tmg->tm_yday, 18); + TEST_COMPARE (tmg->tm_isdst, 0); + } + + { + time_t t = (time_t) 0x80000000ull; + struct tm tms; + struct tm *tmg = gmtime_r (&t, &tms); + TEST_VERIFY (tmg == &tms); + TEST_COMPARE (tmg->tm_sec, 8); + TEST_COMPARE (tmg->tm_min, 14); + TEST_COMPARE (tmg->tm_hour, 3); + TEST_COMPARE (tmg->tm_mday, 19); + TEST_COMPARE (tmg->tm_mon, 0); + TEST_COMPARE (tmg->tm_year, 138); + TEST_COMPARE (tmg->tm_wday, 2); + TEST_COMPARE (tmg->tm_yday, 18); + TEST_COMPARE (tmg->tm_isdst, 0); + } + + return 0; +} + +#include <support/test-driver.c> |