@Test
public void changeTracking() {
Anchor a = new Anchor();
a.setId("123");
a.setOffset(456.789);
a.put("foo", "bar");
assertEquals(new Double(456.789), a.getOffset());
assertEquals("Offset and original are the same", a.getOriginalOffset(), a.getOffset());
assertEquals(Change.Operation.NoChange, a.getChange());
a.put("foo", "foo");
assertEquals("Only offset affects change:", Change.Operation.NoChange, a.getChange());
a.setOffset(123.456);
assertEquals(new Double(123.456), a.getOffset());
assertEquals(
"Original offset remembers first offset:", new Double(456.789), a.get("originalOffset"));
assertEquals(
"Original offset remembers first offset:", new Double(456.789), a.getOriginalOffset());
assertEquals(Change.Operation.Update, a.getChange());
a.setOffset(456.123);
assertEquals(new Double(456.123), a.getOffset());
assertEquals("Original offset only set once:", new Double(456.789), a.getOriginalOffset());
assertEquals(Change.Operation.Update, a.getChange());
a.rollback();
assertEquals(new Double(456.789), a.getOffset());
assertEquals("Offset and original are the same", a.getOriginalOffset(), a.getOffset());
assertEquals(Change.Operation.NoChange, a.getChange());
a.destroy();
assertEquals(Change.Operation.Destroy, a.getChange());
a.rollback();
assertEquals(Change.Operation.NoChange, a.getChange());
a.create();
assertEquals(Change.Operation.Create, a.getChange());
a.rollback();
assertEquals("Create cannot be rolled back:", Change.Operation.Create, a.getChange());
}
