/** Test setPowertype(). */
 public void testSetPowertype() {
   LOG.info("Setting powertype");
   Model.getCoreHelper().setPowertype(elem, types[0]);
   Model.getPump().flushModelEvents();
   assertTrue(model.getSelectedItem() == types[0]);
   LOG.info("Powertype set");
 }
 /** Test setPowertype() with null argument. */
 public void testSetPowertypeToNull() {
   Model.getCoreHelper().setPowertype(elem, types[0]);
   Model.getCoreHelper().setPowertype(elem, null);
   Model.getPump().flushModelEvents();
   assertNull(model.getSelectedItem());
 }