tests/test-dprintf-gnu.c

   1 /* Test of POSIX and GNU compatible dprintf() function.
   2    Copyright (C) 2007-2024 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible <bruno@clisp.org>, 2023.  */
  18
  19 #include <config.h>
  20
  21 #include <stdio.h>
  22
  23 #include <stddef.h>
  24 #include <string.h>
  25
  26 #include "macros.h"
  27
  28 static void
  29 test_function (int (*my_dprintf) (int, const char *, ...))
  30 {
  31   /* Here we don't test output that may be platform dependent.
  32      The bulk of the tests is done as part of the 'vasnprintf-posix' module.  */
  33
  34   /* Test the support of the 'B' conversion specifier for binary output of
  35      integers.  */
  36
  37   /* Zero.  */
  38   my_dprintf (fileno (stdout), "%B %d\n", 0, 33, 44, 55);
  39
  40   /* A positive number.  */
  41   my_dprintf (fileno (stdout), "%B %d\n", 12345, 33, 44, 55);
  42
  43   /* A large positive number.  */
  44   my_dprintf (fileno (stdout), "%B %d\n", 0xFFFFFFFEU, 33, 44, 55);
  45
  46   /* Width.  */
  47   my_dprintf (fileno (stdout), "%20B %d\n", 12345, 33, 44, 55);
  48
  49   /* Width given as argument.  */
  50   my_dprintf (fileno (stdout), "%*B %d\n", 20, 12345, 33, 44, 55);
  51
  52   /* Negative width given as argument (cf. FLAG_LEFT below).  */
  53   my_dprintf (fileno (stdout), "%*B %d\n", -20, 12345, 33, 44, 55);
  54
  55   /* Precision.  */
  56   my_dprintf (fileno (stdout), "%.20B %d\n", 12345, 33, 44, 55);
  57
  58   /* Zero precision and a positive number.  */
  59   my_dprintf (fileno (stdout), "%.0B %d\n", 12345, 33, 44, 55);
  60
  61   /* Zero precision and a zero number.  */
  62   my_dprintf (fileno (stdout), "%.0B %d\n", 0, 33, 44, 55);
  63
  64   /* Width and precision.  */
  65   my_dprintf (fileno (stdout), "%25.20B %d\n", 12345, 33, 44, 55);
  66
  67   /* FLAG_LEFT.  */
  68   my_dprintf (fileno (stdout), "%-20B %d\n", 12345, 33, 44, 55);
  69
  70   /* FLAG_ALT with zero.  */
  71   my_dprintf (fileno (stdout), "%#B %d\n", 0, 33, 44, 55);
  72
  73   /* FLAG_ALT with a positive number.  */
  74   my_dprintf (fileno (stdout), "%#B %d\n", 12345, 33, 44, 55);
  75
  76   /* FLAG_ALT with a positive number and width.  */
  77   my_dprintf (fileno (stdout), "%#20B %d\n", 12345, 33, 44, 55);
  78
  79   /* FLAG_ALT with a positive number and padding.  */
  80   my_dprintf (fileno (stdout), "%0#20B %d\n", 12345, 33, 44, 55);
  81
  82   /* FLAG_ALT with a positive number and precision.  */
  83   my_dprintf (fileno (stdout), "%0#.20B %d\n", 12345, 33, 44, 55);
  84
  85   /* FLAG_ALT with a positive number and width and precision.  */
  86   my_dprintf (fileno (stdout), "%#25.20B %d\n", 12345, 33, 44, 55);
  87
  88   /* FLAG_ALT with a zero precision and a zero number.  */
  89   my_dprintf (fileno (stdout), "%#.0B %d\n", 0, 33, 44, 55);
  90 }
  91
  92 int
  93 main (int argc, char *argv[])
  94 {
  95   test_function (dprintf);
  96   return test_exit_status;
  97 }