public class AddPrefixActionTest {
@Test
public void shouldAddPrefixIfNotPresent() throws Exception {
AddPrefixAction action = new AddPrefixAction();
action.setField("to");
action.setPrefix("57");
Message message = new Message();
message.setProperty("to", "11");
action.execute(message);
Assert.assertEquals(message.getProperty("to", String.class), "5711");
}