From 28ef1abc10cfbc2c3d2747c008eb2300858d0426 Mon Sep 17 00:00:00 2001 From: Lorry Tar Creator Date: Fri, 22 Apr 2016 04:38:07 +0000 Subject: grep-2.25 --- gnulib-tests/test-unsetenv.c | 61 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 gnulib-tests/test-unsetenv.c (limited to 'gnulib-tests/test-unsetenv.c') diff --git a/gnulib-tests/test-unsetenv.c b/gnulib-tests/test-unsetenv.c new file mode 100644 index 0000000..fe4548d --- /dev/null +++ b/gnulib-tests/test-unsetenv.c @@ -0,0 +1,61 @@ +/* Tests of unsetenv. + Copyright (C) 2009-2016 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 . */ + +/* Written by Eric Blake , 2009. */ + +#include + +#include + +#include "signature.h" +SIGNATURE_CHECK (unsetenv, int, (char const *)); + +#include +#include +#include + +#include "macros.h" + +int +main (void) +{ + char entry[] = "b=2"; + + /* Test removal when multiple entries present. */ + ASSERT (putenv ((char *) "a=1") == 0); + ASSERT (putenv (entry) == 0); + entry[0] = 'a'; /* Unspecified what getenv("a") would be at this point. */ + ASSERT (unsetenv ("a") == 0); /* Both entries will be removed. */ + ASSERT (getenv ("a") == NULL); + ASSERT (unsetenv ("a") == 0); + + /* Required to fail with EINVAL. */ + errno = 0; + ASSERT (unsetenv ("") == -1); + ASSERT (errno == EINVAL); + errno = 0; + ASSERT (unsetenv ("a=b") == -1); + ASSERT (errno == EINVAL); +#if 0 + /* glibc and gnulib's implementation guarantee this, but POSIX no + longer requires it: http://austingroupbugs.net/view.php?id=185 */ + errno = 0; + ASSERT (unsetenv (NULL) == -1); + ASSERT (errno == EINVAL); +#endif + + return 0; +} -- cgit v1.2.1