| 1 | /* -*- buffer-read-only: t -*- vi: set ro: */
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| 2 | /* DO NOT EDIT! GENERATED AUTOMATICALLY! */
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| 3 | /* Tests of unsetenv.
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| 4 | Copyright (C) 2009, 2010 Free Software Foundation, Inc.
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| 5 |
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| 6 | This program is free software: you can redistribute it and/or modify
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| 7 | it under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 3 of the License, or
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| 9 | (at your option) any later version.
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| 10 |
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| 11 | This program is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */
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| 18 |
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| 19 | /* Written by Eric Blake <ebb9@byu.net>, 2009. */
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| 20 |
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| 21 | #include <stdlib.h>
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| 22 |
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| 23 | #include <errno.h>
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| 24 | #include <string.h>
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| 25 | #include <unistd.h>
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| 26 | #include <stdio.h>
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| 27 |
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| 28 | #define ASSERT(expr) \
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| 29 | do \
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| 30 | { \
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| 31 | if (!(expr)) \
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| 32 | { \
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| 33 | fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
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| 34 | abort (); \
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| 35 | } \
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| 36 | } \
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| 37 | while (0)
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| 38 |
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| 39 | int
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| 40 | main (void)
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| 41 | {
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| 42 | char entry[] = "b=2";
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| 43 |
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| 44 | /* Test removal when multiple entries present. */
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| 45 | ASSERT (putenv ((char *) "a=1") == 0);
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| 46 | ASSERT (putenv (entry) == 0);
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| 47 | entry[0] = 'a'; /* Unspecified what getenv("a") would be at this point. */
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| 48 | ASSERT (unsetenv ("a") == 0); /* Both entries will be removed. */
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| 49 | ASSERT (getenv ("a") == NULL);
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| 50 | ASSERT (unsetenv ("a") == 0);
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| 51 |
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| 52 | /* Required to fail with EINVAL. */
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| 53 | errno = 0;
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| 54 | ASSERT (unsetenv ("") == -1);
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| 55 | ASSERT (errno == EINVAL);
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| 56 | errno = 0;
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| 57 | ASSERT (unsetenv ("a=b") == -1);
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| 58 | ASSERT (errno == EINVAL);
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| 59 | #if 0
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| 60 | /* glibc and gnulib's implementation guarantee this, but POSIX no
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| 61 | longer requires it: http://austingroupbugs.net/view.php?id=185 */
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| 62 | errno = 0;
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| 63 | ASSERT (unsetenv (NULL) == -1);
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| 64 | ASSERT (errno == EINVAL);
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| 65 | #endif
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| 66 |
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| 67 | return 0;
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| 68 | }
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