public void Serialization()
        {
            var sut = new Percentage(20);

            sut.Should().BeXmlSerializable();
            sut.Should().BeBinarySerializable();
            sut.Should().BeDataContractSerializable();
        }
        public void Binary_Serializable()
        {
            var sut = new Percentage(5);

            sut.Should().BeBinarySerializable();
        }
        public void Xml_Serializable()
        {
            var sut = new Percentage(5);

            sut.Should().BeXmlSerializable();
        }
        public void DataContract_Serializable()
        {
            var sut = new Percentage(5);

            sut.Should().BeDataContractSerializable();
        }