public void TestMultiplication_CurrentDate()
{
ComplexField addition = new Addition();
Field operand1 = new SpecialField("operand1", "CurrentDate");
Field operand2 = new LiteralField("Int32", "operand2", "-4");
Field operand3 = new LiteralField("Decimal", "operand3", "-1");
addition.AddField(operand1).AddField(operand2).AddField(operand3);
DateTime additionResult = (DateTime)addition.GetValue(null);
DateTime expected = DateTime.Now.Date.AddDays(-5);
Assert.AreEqual <DateTime>(expected, additionResult);
}