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authorAndreas Rottmann <a.rottmann@gmx.at>2010-05-27 18:23:15 +0200
committerAndreas Rottmann <a.rottmann@gmx.at>2010-05-27 18:23:15 +0200
commit3e0814cd9862b89c7a39672672937477bd87ddfb (patch)
tree159134a624e51509f40ed8823249f09a70d1dda3 /tests/test-unsetenv.c
parent3bebb94360f1c2333feb8d504a9fa4f96984d8b7 (diff)
Imported Upstream version 0.9.3upstream/0.9.3
Diffstat (limited to 'tests/test-unsetenv.c')
-rw-r--r--tests/test-unsetenv.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/tests/test-unsetenv.c b/tests/test-unsetenv.c
new file mode 100644
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--- /dev/null
+++ b/tests/test-unsetenv.c
@@ -0,0 +1,61 @@
+/* Tests of unsetenv.
+ Copyright (C) 2009, 2010 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 <http://www.gnu.org/licenses/>. */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009. */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (unsetenv, int, (char const *));
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+#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;
+}