--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2010-01-09  Bruno Haible  <bruno@clisp.org>
 
+	Tests for module 'unistr/u32-mbtouc'.
+	* modules/unistr/u32-mbtouc-tests: New file.
+	* tests/unistr/test-u32-mbtouc.c: New file.
+
 	Tests for module 'unistr/u16-mbtouc'.
 	* modules/unistr/u16-mbtouc-tests: New file.
 	* tests/unistr/test-u16-mbtouc.c: New file.

new file mode 100644
--- /dev/null
+++ b/modules/unistr/u32-mbtouc-tests
@@ -0,0 +1,13 @@
+Files:
+tests/unistr/test-u32-mbtouc.c
+tests/unistr/test-u32-mbtouc.h
+tests/macros.h
+
+Depends-on:
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-u32-mbtouc
+check_PROGRAMS += test-u32-mbtouc
+test_u32_mbtouc_SOURCES = unistr/test-u32-mbtouc.c

new file mode 100644
--- /dev/null
+++ b/tests/unistr/test-u32-mbtouc.c
@@ -0,0 +1,36 @@
+/* Test of u32_mbtouc() function.
+   Copyright (C) 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 Bruno Haible <bruno@clisp.org>, 2010.  */
+
+#include <config.h>
+
+#include "unistr.h"
+
+#include "macros.h"
+
+/* Enable all tests that may be skipped when testing u32_mbtouc_unsafe.  */
+#define FULL_SAFETY 1
+
+#include "test-u32-mbtouc.h"
+
+int
+main ()
+{
+  test_function (u32_mbtouc);
+
+  return 0;
+}