--- /dev/null
+/* Test of conversion of wide string to string.
+ Copyright (C) 2019 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>, 2019. */
+
+#include <config.h>
+
+#include <wchar.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (wcstok, wchar_t *,
+ (wchar_t *wcs, const wchar_t *delim, wchar_t **ptr));
+
+#include <string.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+ wchar_t string[] = L"hello world!";
+ wchar_t delim[] = L" ";
+ wchar_t *ptr;
+ wchar_t *ret;
+
+ ret = wcstok (string, delim, &ptr);
+ ASSERT (ret == string);
+ ASSERT (memcmp (string, L"hello\0 world!", 14 * sizeof (wchar_t)) == 0);
+ ASSERT (ptr == string + 6);
+
+ ret = wcstok (NULL, delim, &ptr);
+ ASSERT (ret == string + 7);
+ ASSERT (memcmp (string, L"hello\0 world!", 14 * sizeof (wchar_t)) == 0);
+ ASSERT (ptr == NULL || *ptr == L'\0');
+
+ ret = wcstok (NULL, delim, &ptr);
+ ASSERT (ret == NULL);
+
+ return 0;
+}