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
25static const struct argp_option
26options[] =
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
35static error_t
36parser (int key, char *arg, struct argp_state *state)
37{
38 switch (key)
39 {
40 case 'e':
41 argp_error (state: state, fmt: "%Lf%f%Lf%f", (long double) -1, (double) -2,
42 (long double) -3, (double) -4);
43 break;
44 case 'f':
45 argp_failure (state: state, status: 0, errnum: 0, fmt: "%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
54static struct argp
55argp =
56{
57 options, parser
58};
59
60int argc = 2;
61char *argv[3] = { (char *) "test-argp", NULL, NULL };
62
63static void
64do_test_call (void)
65{
66 int remaining;
67 argp_parse (argp: &argp, argc: argc, argv: argv, flags: 0, arg_index: &remaining, NULL);
68}
69
70static int
71do_one_test (const char *expected)
72{
73 struct support_capture_subprocess result;
74 result = support_capture_subprocess (callback: (void *) &do_test_call, NULL);
75
76 TEST_COMPARE_STRING (result.err.buffer, expected);
77
78 return 0;
79}
80
81static int
82do_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: expected_error);
95
96 argv[1] = (char *) param_failure;
97 do_one_test (expected: expected_failure);
98
99 return 0;
100}
101
102#include <support/test-driver.c>
103

source code of glibc/argp/tst-ldbl-argp.c