public void ConvertFromExcelTest()
{
var converter = new NullableConverter(typeof(decimal?));
var typeConverterOptions = new TypeConverterOptions {
CultureInfo = CultureInfo.CurrentCulture
};
Assert.AreEqual((decimal?)12.3m, converter.ConvertFromExcel(typeConverterOptions, 12.3));
Assert.AreEqual((decimal?)12.3m, converter.ConvertFromExcel(typeConverterOptions, "12.3"));
Assert.AreEqual((decimal?)12.3m, converter.ConvertFromExcel(typeConverterOptions, "12.3"));
Assert.AreEqual((decimal?)12.3m, converter.ConvertFromExcel(typeConverterOptions, " 12.3 "));
Assert.AreEqual(null, converter.ConvertFromExcel(typeConverterOptions, ""));
}