diff --git a/comphelper/qa/test_string.cxx b/comphelper/qa/test_string.cxx
new file mode 100644
index 000000000000..9769fadc24f1
--- /dev/null
+++ b/comphelper/qa/test_string.cxx
@@ -0,0 +1,90 @@
+/*************************************************************************
+ *
+ *  OpenOffice.org - a multi-platform office productivity suite
+ *
+ *  $RCSfile: test_string.cxx,v $
+ *
+ *  $Revision: 1.2 $
+ *
+ *  last change: $Author: ihi $ $Date: 2007-11-23 13:15:02 $
+ *
+ *  The Contents of this file are made available subject to
+ *  the terms of GNU Lesser General Public License Version 2.1.
+ *
+ *
+ *    GNU Lesser General Public License Version 2.1
+ *    =============================================
+ *    Copyright 2007 by Sun Microsystems, Inc.
+ *    901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ *    This library is free software; you can redistribute it and/or
+ *    modify it under the terms of the GNU Lesser General Public
+ *    License version 2.1, as published by the Free Software Foundation.
+ *
+ *    This library 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
+ *    Lesser General Public License for more details.
+ *
+ *    You should have received a copy of the GNU Lesser General Public
+ *    License along with this library; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *    MA  02111-1307  USA
+ *
+ ************************************************************************/
+
+#include "precompiled_comphelper.hxx"
+#include "sal/config.h"
+
+#include "comphelper/string.hxx"
+#include "cppunit/simpleheader.hxx"
+#include "rtl/string.h"
+#include "rtl/ustring.h"
+#include "rtl/ustring.hxx"
+#include "sal/types.h"
+
+namespace {
+
+class Test: public CppUnit::TestFixture {
+public:
+    void test();
+
+    CPPUNIT_TEST_SUITE(Test);
+    CPPUNIT_TEST(test);
+    CPPUNIT_TEST_SUITE_END();
+};
+
+void Test::test() {
+    rtl::OUString s1(RTL_CONSTASCII_USTRINGPARAM("foobarbar"));
+    sal_Int32 n1;
+    rtl::OUString s2(
+        comphelper::string::searchAndReplace(
+            s1, RTL_CONSTASCII_STRINGPARAM("bar"),
+            rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("baaz")), 0, &n1));
+    CPPUNIT_ASSERT(
+        s2 == rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("foobaazbar")));
+    CPPUNIT_ASSERT(n1 == 3);
+    sal_Int32 n2;
+    rtl::OUString s3(
+        comphelper::string::searchAndReplace(
+            s2, RTL_CONSTASCII_STRINGPARAM("bar"),
+            rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("bz")),
+            n1 + RTL_CONSTASCII_LENGTH("baaz"), &n2));
+    CPPUNIT_ASSERT(
+        s3 == rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("foobaazbz")));
+    CPPUNIT_ASSERT(n2 == 7);
+    sal_Int32 n3;
+    rtl::OUString s4(
+        comphelper::string::searchAndReplace(
+            s3, RTL_CONSTASCII_STRINGPARAM("bar"),
+            rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("baz")),
+            n2 + RTL_CONSTASCII_LENGTH("bz"), &n3));
+    CPPUNIT_ASSERT(s4 == s3);
+    CPPUNIT_ASSERT(n3 == -1);
+}
+
+CPPUNIT_TEST_SUITE_NAMED_REGISTRATION(Test, "alltests");
+
+}
+
+NOADDITIONAL;