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| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | modules/tempname-tests | 13 | ||||
| -rw-r--r-- | tests/test-tempname.c | 57 |
3 files changed, 76 insertions, 0 deletions
@@ -1,3 +1,9 @@ +2022-08-16 Bruno Haible <bruno@clisp.org> + + tempname: Add tests. + * tests/test-tempname.c: New file. + * modules/tempname-tests: New file. + 2022-08-16 Simon Josefsson <simon@josefsson.org> pmccabe2html: Doc fix. diff --git a/modules/tempname-tests b/modules/tempname-tests new file mode 100644 index 0000000000..384f98707b --- /dev/null +++ b/modules/tempname-tests @@ -0,0 +1,13 @@ +Files: +tests/test-tempname.c +tests/macros.h + +Depends-on: +unlink + +configure.ac: + +Makefile.am: +TESTS += test-tempname +check_PROGRAMS += test-tempname +test_tempname_LDADD = $(LDADD) $(LIB_GETRANDOM) $(LIB_CLOCK_GETTIME) diff --git a/tests/test-tempname.c b/tests/test-tempname.c new file mode 100644 index 0000000000..d463eec2b4 --- /dev/null +++ b/tests/test-tempname.c @@ -0,0 +1,57 @@ +/* Test of creating a temporary file. + Copyright (C) 2022 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>, 2022. */ + +#include <config.h> + +#include "tempname.h" + +#include <string.h> +#include <unistd.h> + +#include "macros.h" + +int +main () +{ + /* Verify that two consecutive calls to gen_tempname return two different + file names, with a high probability. */ + const char *templ18 = "gl-temp-XXXXXX.xyz"; + char filename1[18 + 1]; + char filename2[18 + 1]; + + strcpy (filename1, templ18); + int fd1 = gen_tempname (filename1, strlen (".xyz"), 0, GT_FILE); + ASSERT (fd1 >= 0); + + strcpy (filename2, templ18); + int fd2 = gen_tempname (filename2, strlen (".xyz"), 0, GT_FILE); + ASSERT (fd2 >= 0); + + /* With 6 'X' and a good pseudo-random number generator behind the scenes, + the probability of getting the same file name twice in a row should be + 1/62^6 < 1/10^10. */ + ASSERT (strcmp (filename1, filename2) != 0); + + /* Clean up. */ + close (fd1); + close (fd2); + unlink (filename1); + unlink (filename2); + + return 0; +} |