private Interval interval = new Interval(date(2009, 1, 2), date(2009, 4, 1));
private ImmutableMap<Interval,MonetarySummaryWithSplits> summaries;
@Before
public void setup() {
final Account account = new Account("Checking", USD);
final Txaction txaction = new Txaction(account, decimal("-30.00"), date(2009, 2, 13));
txaction.addTag(new Tag("food"));
final IntervalSummarizer summarizer = new IntervalSummarizer(new CurrencyExchangeRateMap());
this.summaries = summarizer.summarize(ImmutableList.of(txaction), interval, IntervalType.MONTHLY, USD, null);