@Test
public void testGetLookupKeyForMessage() throws Exception {

	mapping.setExpression("/root/text()");
	mapping.afterPropertiesSet();
	MockWebServiceMessage request = new MockWebServiceMessage("<root>value</root>");
	MessageContext context = new DefaultMessageContext(request, new MockWebServiceMessageFactory());
	String result = mapping.getLookupKeyForMessage(context);
	Assert.assertNotNull("mapping returns null", result);
	Assert.assertEquals("mapping returns invalid result", "value", result);
}