@Test
public void doActionNoArgs() throws PersistenceException {

    // setup test resource
    when(valueMap.containsKey(ATTR)).thenReturn(true);
    when(valueMap.get(ATTR)).thenReturn(new Boolean[] {});
    JoinProperty action = new JoinProperty(ATTR);
    action.doAction(resource);
    verify(valueMap, times(1)).remove(ATTR);
}