1 /* Test of getting user name.
2 Copyright (C) 2010 Free Software Foundation, Inc.
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.
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.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Bruno Haible <bruno@clisp.org>, 2010. */
23 #include "signature.h"
24 SIGNATURE_CHECK (getlogin_r, int, (char *, size_t));
36 /* Test with a large enough buffer. */
39 if (getlogin_r (buf, sizeof (buf)) != 0)
41 /* getlogin_r() fails when stdin is not connected to a tty. */
42 ASSERT (! isatty (0));
43 fprintf (stderr, "Skipping test: stdin is not a tty.\n");
47 /* Compare against the value from the environment. */
48 #if !((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__)
51 const char *name = getenv ("LOGNAME");
52 if (name == NULL || name[0] == '\0')
53 name = getenv ("USER");
54 if (name != NULL && name[0] != '\0')
55 ASSERT (strcmp (buf, name) == 0);
58 #if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
59 /* Native Windows platform.
60 Note: This test would fail on Cygwin in an ssh session, because sshd
61 sets USERNAME=SYSTEM. */
63 const char *name = getenv ("USERNAME");
64 if (name != NULL && name[0] != '\0')
65 ASSERT (strcmp (buf, name) == 0);
69 /* Test with a small buffer. */
72 size_t n = strlen (buf);
75 for (i = 0; i <= n; i++)
76 ASSERT (getlogin_r (smallbuf, i) == ERANGE);
79 /* Test with a huge buffer. */
81 static char hugebuf[70000];
83 ASSERT (getlogin_r (hugebuf, sizeof (hugebuf)) == 0);
84 ASSERT (strcmp (hugebuf, buf) == 0);