kc3-lang/gnulib/tests/test-time.c

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• Hash : 5b92dd0a
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  Date : 2024-01-01T10:31:48
  

  maint: run 'make update-copyright'
  

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• tests/test-time.c

• /* Test of time() function.
     Copyright (C) 2023-2024 Free Software Foundation, Inc.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
  
     This program 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 General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  /* Written by Bruno Haible.  */
  
  #include <config.h>
  
  #include <time.h>
  
  #include "signature.h"
  SIGNATURE_CHECK (time, time_t, (time_t *));
  
  #include <sys/time.h>
  
  #include "macros.h"
  
  int
  main (void)
  {
    /* Check consistency of time() with gettimeofday().tv_sec.  */
    struct timeval tv1;
    struct timeval tv2;
    time_t tt3;
  
    /* Wait until gettimeofday() reports an increase in tv_sec.  */
    ASSERT (gettimeofday (&tv1, NULL) == 0);
    do
      ASSERT (gettimeofday (&tv2, NULL) == 0);
    while (tv2.tv_sec == tv1.tv_sec);
    /* We are now at the beginning of a second.  Test whether time() reports
       the new second or the previous one.  */
    tt3 = time (NULL);
    ASSERT (tt3 >= tv2.tv_sec);
  
    return 0;
  }
  

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