1 files changed, 79 insertions, 0 deletions
diff --git a/gnulib-tests/test-strsignal.c b/gnulib-tests/test-strsignal.c
new file mode 100644
index 0000000..408f841
--- /dev/null
+++ b/gnulib-tests/test-strsignal.c
@@ -0,0 +1,79 @@
+/* Test of strsignal() function.
+   Copyright (C) 2008-2022 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, 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 Colin Watson <cjwatson@debian.org>, 2008.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (strsignal, char *, (int));
+
+#include <signal.h>
+
+#include "macros.h"
+
+#if HAVE_DECL_SYS_SIGLIST
+# define ASSERT_DESCRIPTION(actual, expected)
+#else
+/* In this case, we can guarantee some signal descriptions.
+   But allow the actual result to be longer than the expected result.  */
+# define ASSERT_DESCRIPTION(actual, expected) \
+   ASSERT (strncmp (actual, expected, strlen (expected)) == 0)
+#endif
+
+int
+main (void)
+{
+  /* Work around bug in cygwin 1.5.25 <string.h> by declaring str as
+     const char *, even though strsignal is supposed to return char *.
+     At any rate, this doesn't hurt, since POSIX 200x states that "The
+     string pointed to shall not be modified by the application."  */
+  const char *str;
+
+  /* We try a couple of signals, since not all signals are supported
+     everywhere.  Notwithstanding the #ifdef for neatness, SIGINT should in
+     fact be available on all platforms.  */
+
+#ifdef SIGHUP
+  str = strsignal (SIGHUP);
+  ASSERT (str);
+  ASSERT (*str);
+  ASSERT_DESCRIPTION (str, "Hangup");
+#endif
+
+#ifdef SIGINT
+  str = strsignal (SIGINT);
+  ASSERT (str);
+  ASSERT (*str);
+  ASSERT_DESCRIPTION (str, "Interrupt");
+#endif
+
+  /* Test that for out-of-range signal numbers the result is usable.  */
+
+  str = strsignal (-1);
+  ASSERT (str);
+  ASSERT (str != (char *) -1);
+  ASSERT (strlen (str));
+
+  str = strsignal (9249234);
+  ASSERT (str);
+  ASSERT (str != (char *) -1);
+  ASSERT (strlen (str));
+
+  return 0;
+}