public void SurplusCannotBeUsedInTheExpenseList()
{
BudgetModel subject = BudgetModelTestData.CreateTestData1();
List<Expense> myExpenses = subject.Expenses.ToList();
myExpenses.Add(new Expense { Amount = 445M, Bucket = new SurplusBucket() });
List<Income> myIncomes = subject.Incomes.ToList();
subject.Update(myIncomes, myExpenses);
Assert.Fail();
}