| /* Test of opening a file stream. |
| Copyright (C) 2007-2020 Free Software Foundation, Inc. |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| |
| /* Written by Bruno Haible <bruno@clisp.org>, 2007. */ |
| |
| /* Include <config.h> and a form of <stdio.h> first. */ |
| |
| #include <errno.h> |
| #include <unistd.h> |
| |
| #include "macros.h" |
| |
| /* Test fopen. Assumes BASE is defined. */ |
| |
| static int |
| test_fopen (void) |
| { |
| FILE *f; |
| /* Remove anything from prior partial run. */ |
| unlink (BASE "file"); |
| |
| /* Read requires existing file. */ |
| errno = 0; |
| ASSERT (fopen (BASE "file", "r") == NULL); |
| ASSERT (errno == ENOENT); |
| |
| /* Write can create a file. */ |
| f = fopen (BASE "file", "w"); |
| ASSERT (f); |
| ASSERT (fclose (f) == 0); |
| |
| /* Trailing slash is invalid on non-directory. */ |
| errno = 0; |
| ASSERT (fopen (BASE "file/", "r") == NULL); |
| ASSERT (errno == ENOTDIR || errno == EISDIR || errno == EINVAL); |
| |
| /* Cannot create a directory. */ |
| errno = 0; |
| ASSERT (fopen ("nonexist.ent/", "w") == NULL); |
| ASSERT (errno == ENOTDIR || errno == EISDIR || errno == ENOENT |
| || errno == EINVAL); |
| |
| /* Directories cannot be opened for writing. */ |
| errno = 0; |
| ASSERT (fopen (".", "w") == NULL); |
| ASSERT (errno == EISDIR || errno == EINVAL || errno == EACCES); |
| |
| /* /dev/null must exist, and be writable. */ |
| f = fopen ("/dev/null", "r"); |
| ASSERT (f); |
| ASSERT (fclose (f) == 0); |
| f = fopen ("/dev/null", "w"); |
| ASSERT (f); |
| ASSERT (fclose (f) == 0); |
| |
| /* Cleanup. */ |
| ASSERT (unlink (BASE "file") == 0); |
| |
| return 0; |
| } |