>From f50a5a002d05c2a75994896f47457edc60eea7a6 Mon Sep 17 00:00:00 2001
From: Bruno Haible <address@hidden>
Date: Sun, 24 Nov 2019 13:12:53 +0100
Subject: [PATCH 2/2] wcstok: Add tests.

* tests/test-wcstok.c: New file.
* modules/wcstok-tests: New file.
---
 ChangeLog            |  6 ++++++
 modules/wcstok-tests | 12 ++++++++++++
 tests/test-wcstok.c  | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 71 insertions(+)
 create mode 100644 modules/wcstok-tests
 create mode 100644 tests/test-wcstok.c

diff --git a/ChangeLog b/ChangeLog
index 9e6725a..984792b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2019-11-24  Bruno Haible  <address@hidden>
 
+	wcstok: Add tests.
+	* tests/test-wcstok.c: New file.
+	* modules/wcstok-tests: New file.
+
+2019-11-24  Bruno Haible  <address@hidden>
+
 	wcstok: Work around wrong signature on native Windows.
 	* lib/wchar.in.h (wcstok): Override when REPLACE_WCSTOK is 1.
 	* m4/wcstok.m4 (gl_FUNC_WCSTOK): Check for signature of wcstok. Set
diff --git a/modules/wcstok-tests b/modules/wcstok-tests
new file mode 100644
index 0000000..57ccd08
--- /dev/null
+++ b/modules/wcstok-tests
@@ -0,0 +1,12 @@
+Files:
+tests/test-wcstok.c
+tests/signature.h
+tests/macros.h
+
+Depends-on:
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-wcstok
+check_PROGRAMS += test-wcstok
diff --git a/tests/test-wcstok.c b/tests/test-wcstok.c
new file mode 100644
index 0000000..5c6fd51
--- /dev/null
+++ b/tests/test-wcstok.c
@@ -0,0 +1,53 @@
+/* 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 <address@hidden>, 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;
+}
-- 
2.7.4