public void ShouldConvertDecimalToPercent()
        {
            PercentConverter converter = new PercentConverter();
            decimal? numDecimal = 20;

            var convertedValue = converter.Convert(numDecimal, typeof(decimal?), null, null) as string;

            Assert.AreEqual("20.0%", convertedValue);

            convertedValue = converter.Convert(null, null, null, null) as string;

            Assert.AreEqual("0.0%", convertedValue);
        }
        public void ShouldThrowNotImplementedExceptionInConvertBack()
        {
            PercentConverter converter = new PercentConverter();

            var convertedValue = converter.ConvertBack(null, null, null, null);
        }