bob.equipToInventoryOnly(item);
Offer offer = market.createOffer(bob, item, 10, 1);
offer.put("timestamp", "0");
Item item2 = SingletonRepository.getEntityManager().getItem("cheese");
bob.equipToInventoryOnly(item2);
Offer offer2 = market.createOffer(bob, item2, 10, 1);
// large numbers on purpose trying to overflow int
List<Offer> offersOlderThan = market.getOffersOlderThan(1000000000);
assertTrue(offersOlderThan.contains(offer));