* @throws GadgetDeletionException - on error for deletion.
*/
@Test
public void testExecuteWithDeletedGadgetsAndEmptyTargetColumn() throws GadgetDeletionException
{
Tab fordsThirdTab = jpaTabMapper.findById(TEST_TABTEMPLATE_ID);
// Ensure the state is good ahead of time.
assertEquals(Layout.THREECOLUMN, fordsThirdTab.getTabLayout());
assertEquals(7, fordsThirdTab.getGadgets().size());
assertEquals(0, fordsThirdTab.getGadgets().get(0).getZoneNumber());
assertEquals(0, fordsThirdTab.getGadgets().get(1).getZoneNumber());
assertEquals(0, fordsThirdTab.getGadgets().get(2).getZoneNumber());
assertEquals(1, fordsThirdTab.getGadgets().get(3).getZoneNumber());
assertEquals(2, fordsThirdTab.getGadgets().get(4).getZoneNumber());
assertEquals(2, fordsThirdTab.getGadgets().get(5).getZoneNumber());
assertEquals(2, fordsThirdTab.getGadgets().get(6).getZoneNumber());
//Remove the last gadget in the middle column so that we simulate collapsing all gadgets
//down to an empty column.
jpaTabMapper.deleteGadget(fordsThirdTab.getGadgets().get(3));
getEntityManager().clear();
UpdateGadgetsWithNewTabLayoutRequest request = new UpdateGadgetsWithNewTabLayoutRequest(fordsThirdTab
.getTemplate().getId(), Layout.TWOCOLUMN);
sut.execute(request);
getEntityManager().clear();
fordsThirdTab = jpaTabMapper.findById(TEST_TABTEMPLATE_ID);
assertEquals(6, fordsThirdTab.getGadgets().size());
assertEquals(0, fordsThirdTab.getGadgets().get(0).getZoneNumber());
assertEquals(0, fordsThirdTab.getGadgets().get(1).getZoneNumber());
assertEquals(0, fordsThirdTab.getGadgets().get(2).getZoneNumber());
assertEquals(1, fordsThirdTab.getGadgets().get(3).getZoneNumber());
assertEquals(1, fordsThirdTab.getGadgets().get(4).getZoneNumber());
assertEquals(1, fordsThirdTab.getGadgets().get(5).getZoneNumber());
}