@Test
public void remembersOneReceipt() throws Exception {
Receipt receipt = new Receipt(123);
repository.add(receipt);
List<Receipt> all = repository.findAll();
assertEquals(1, all.size());
assertEquals(receipt, all.get(0));
}
@Test
public void remembersTwoReceipts() throws Exception {
Receipt first = new Receipt(111);
Receipt second = new Receipt(222);
repository.add(first);
repository.add(second);
List<Receipt> all = repository.findAll();
assertEquals(2, all.size());
assertEquals(first, all.get(0));
assertEquals(second, all.get(1));
}