argp/tst-ldbl-argp.c

   1 /* Testing of long double conversions in argp.h functions.
   2    Copyright (C) 2018-2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <argp.h>
  20 #include <string.h>
  21
  22 #include <support/capture_subprocess.h>
  23 #include <support/check.h>
  24
  25 static const struct argp_option
  26 options[] =
  27 {
  28   { "error", 'e', "format", OPTION_ARG_OPTIONAL,
  29     "Run argp_error function with a format string", 0 },
  30   { "failure", 'f', "format", OPTION_ARG_OPTIONAL,
  31     "Run argp_failure function with a format string", 0 },
  32   { NULL, 0, NULL, 0, NULL }
  33 };
  34
  35 static error_t
  36 parser (int key, char *arg, struct argp_state *state)
  37 {
  38   switch (key)
  39     {
  40       case 'e':
  41         argp_error (state, "%Lf%f%Lf%f", (long double) -1, (double) -2,
  42                     (long double) -3, (double) -4);
  43         break;
  44       case 'f':
  45         argp_failure (state, 0, 0, "%Lf%f%Lf%f", (long double) -1,
  46                       (double) -2, (long double) -3, (double) -4);
  47         break;
  48       default:
  49         return ARGP_ERR_UNKNOWN;
  50     }
  51   return 0;
  52 }
  53
  54 static struct argp
  55 argp =
  56 {
  57   options, parser
  58 };
  59
  60 int argc = 2;
  61 char *argv[3] = { (char *) "test-argp", NULL, NULL };
  62
  63 static void
  64 do_test_call (void)
  65 {
  66   int remaining;
  67   argp_parse (&argp, argc, argv, 0, &remaining, NULL);
  68 }
  69
  70 static int
  71 do_one_test (const char *expected)
  72 {
  73   struct support_capture_subprocess result;
  74   result = support_capture_subprocess ((void *) &do_test_call, NULL);
  75
  76   TEST_COMPARE_STRING (result.err.buffer, expected);
  77
  78   return 0;
  79 }
  80
  81 static int
  82 do_test (void)
  83 {
  84   const char *param_error = "--error";
  85   const char *expected_error =
  86     "test-argp: -1.000000-2.000000-3.000000-4.000000\n"
  87     "Try `test-argp --help' or `test-argp --usage' for more information.\n";
  88
  89   const char *param_failure = "--failure";
  90   const char *expected_failure =
  91     "test-argp: -1.000000-2.000000-3.000000-4.000000\n";
  92
  93   argv[1] = (char *) param_error;
  94   do_one_test (expected_error);
  95
  96   argv[1] = (char *) param_failure;
  97   do_one_test (expected_failure);
  98
  99   return 0;
 100 }
 101
 102 #include <support/test-driver.c>