@Test
public void testThatChangeToCoreObjectChangesHash() throws Exception {
// Get starting Hash
StateService svc = StateService.getInstance();
String hash = svc.getCurrentHash(CoreObjectType.ITEM);
// Create a new item, with same attributes.
SalesItem initialItem = CoreObjectService.getInstance().getAllItems().get(0);
SalesItem item = new SalesItem();
item.token = initialItem.token;
item.name = "Cheezbureger";
item.category = 1;
item.clazz = "com.openpos.salesitem";
item.unitPrice = new BigDecimal(19.99);
item.category = 1;
item.setId(1);
List<SalesItem> items = new ArrayList<>();
items.add(item);
// update the state with same object, make sure hash doesn't change
EventService.getInstance().postEvent(new NewProgramState(CoreObjectType.ITEM, items));
Thread.sleep(150);
assertEquals(hash, svc.getCurrentHash(CoreObjectType.ITEM));
// Change one attribute, and make sure hash changes.
items.clear();
item.name = "Burger";
// update the state with same object, make sure hash doesn't change
EventService.getInstance().postEvent(new NewProgramState(CoreObjectType.ITEM, items));
Thread.sleep(150);
assertNotEquals(hash, svc.getCurrentHash(CoreObjectType.ITEM));
// Test that changing a non-serialized field doesn't cause update.
// Change one attribute, and make sure hash changes.
items.clear();
item.name = "Cheezbureger";
item.client = 33;
items.add(item);
// update the state with same object, make sure hash doesn't change
EventService.getInstance().postEvent(new NewProgramState(CoreObjectType.ITEM, items));
Thread.sleep(190);
assertEquals(hash, svc.getCurrentHash(CoreObjectType.ITEM));
}