2 Copyright (C) 2009 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 Eric Blake <ebb9@byu.net>, 2009. */
28 #define ASSERT(expr) \
33 fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
45 /* Test removal when multiple entries present. */
46 ASSERT (putenv ((char *) "a=1") == 0);
47 ASSERT (putenv (entry) == 0);
48 entry[0] = 'a'; /* Unspecified what getenv("a") would be at this point. */
49 ASSERT (unsetenv ("a") == 0); /* Both entries will be removed. */
50 ASSERT (getenv ("a") == NULL);
51 ASSERT (unsetenv ("a") == 0);
53 /* Required to fail with EINVAL. */
55 ASSERT (unsetenv ("") == -1);
56 ASSERT (errno == EINVAL);
58 ASSERT (unsetenv ("a=b") == -1);
59 ASSERT (errno == EINVAL);
61 /* glibc and gnulib's implementation guarantee this, but POSIX no
62 longer requires it: http://austingroupbugs.net/view.php?id=185 */
64 ASSERT (unsetenv (NULL) == -1);
65 ASSERT (errno == EINVAL);