public void ReturnsDuplicatesWhenTransactionsPostedToTwoUnusualNominalCodes()
{
//given one transaction which includes a line to two rare nominal codes (just one posting each)
var postedToTwoUnusualNominalCodes = PostedTo("d", "e");
var postedToUnusualCode1 = PostedTo("a", "d");
var postedToUnusualCode2 = PostedTo("b", "e");
//and a search window for the period "all time", for transactions to nominal codes with <3 postings
var searchWindow = new SearchWindow <UnusualNominalCodesParameters>(new UnusualNominalCodesParameters(3),
new DateRange(new DateTime(1, 1, 1), new DateTime(3000, 12, 31)));
//when we do the transaction search
var transactions = Searching.ExecuteSearch(searchWindow, postedToUnusualCode1, postedToUnusualCode2, PostedTo("a", "b"), PostedTo("b", "a"), postedToTwoUnusualNominalCodes).ToList();
//the transaction posted to two unusual codes appears twice, once in the list for nominal code 1 and once in the list for nominal code 2
CollectionAssert.AreEqual(new [] { postedToUnusualCode1, postedToTwoUnusualNominalCodes, postedToUnusualCode2, postedToTwoUnusualNominalCodes }, transactions);
}
public void TransactionsOutsideThePeriodNotUsedToDetermineWhetherNominalCodeIsUnusual()
{
//given one transaction inside the period to a nominal code
var transaction = PostedTo("a", "b", new DateTime(1999, 1, 1));
//and a search window for transactions to nominal codes with <2 postings
var searchWindow = new SearchWindow <UnusualNominalCodesParameters>(new UnusualNominalCodesParameters(2),
new DateRange(new DateTime(1999, 1, 1), new DateTime(1999, 12, 31)));
//when we do the transaction search
var transactions = Searching.ExecuteSearch(searchWindow, transaction,
PostedTo("a", "b", new DateTime(2000, 1, 1)),
PostedTo("a", "b", new DateTime(1998, 12, 31)),
PostedTo("a", "c", new DateTime(1999, 12, 31)),
PostedTo("a", "c", new DateTime(1999, 12, 31)),
PostedTo("a", "b", new DateTime(2000, 1, 1))).ToList();
//those transactions posted to the nominal code in other periods don't make the code any less unusual.
CollectionAssert.AreEquivalent(new[] { transaction }, transactions);
}
private static IEnumerable <Transaction> ExecuteSearch(int maximumDaysBetweenTransactions, params Transaction[] transactionsInRepository)
{
return(Searching.ExecuteSearch(new SearchWindow <DuplicatePaymentsParameters>(new DuplicatePaymentsParameters(maximumDaysBetweenTransactions), FinancialPeriod), transactionsInRepository));
}
