public void OperationVolumeUnitTest() { Converter_Volume op1 = new Converter_Volume(50, Converter_Volume.UnitType.UNIT_MILLILITER, Converter_Volume.UnitType.UNIT_LITER); Assert.AreEqual(op1.Unit(), "L"); Converter_Volume op2 = new Converter_Volume(50, Converter_Volume.UnitType.UNIT_LITER, Converter_Volume.UnitType.UNIT_MILLILITER); Assert.AreEqual(op2.Unit(), "mL"); }