public void ElectricEquipmentWithDefaultTest() { // use 0 for watts per area as same as double type's default value var elecEqp = new ElectricEquipmentAbridged("new_elec_eqp", 0, "some_schedule"); var dup = elecEqp.DuplicateElectricEquipmentAbridged(); Assert.IsTrue(elecEqp.Equals(dup)); }