tests/test-fpending.c

   1 /* Ensure that __fpending works.
   2
   3    Copyright (C) 2004, 2007-2024 Free Software Foundation, Inc.
   4
   5    This program is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation, either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  17
  18    Written by Jim Meyering.  */
  19
  20 #include <config.h>
  21
  22 #include "fpending.h"
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26
  27 #include "macros.h"
  28
  29 int
  30 main (void)
  31 {
  32   ASSERT (__fpending (stdout) == 0);
  33
  34   fputs ("foo", stdout);
  35   ASSERT (__fpending (stdout) == 3);
  36
  37   fflush (stdout);
  38   ASSERT (__fpending (stdout) == 0);
  39
  40   return test_exit_status;
  41 }