public void ShouldGetTotalAmountForOtherIncomeItems()
{
OtherIncomes ois = new OtherIncomes();
ois.Add(new OtherIncomeItem("Interet", 12000.0));
ois.Add(new OtherIncomeItem("Rental", 12000.0));
Assert.AreEqual(24000.00m, ois.CalculateTotalAmount());
}