@Test
 public void testInvalidAckMode() throws Exception {
   HornetQResourceAdapter qResourceAdapter = newResourceAdapter();
   MyBootstrapContext ctx = new MyBootstrapContext();
   qResourceAdapter.start(ctx);
   HornetQActivationSpec spec = new HornetQActivationSpec();
   try {
     spec.setAcknowledgeMode("CLIENT_ACKNOWLEDGE");
     fail("should throw exception");
   } catch (java.lang.IllegalArgumentException e) {
     // pass
   }
   qResourceAdapter.stop();
 }