public void TestHasOfficeSymbol()
{
Assert.IsNull(configuration.OfficeSymbolDelegate);
configuration.HasOfficeSymbol(x => x.OfficeSymbol);
Assert.IsNotNull(configuration.OfficeSymbolDelegate);
var instance = new TestDocument();
instance.OfficeSymbol = "symbol";
Assert.IsTrue(Object.ReferenceEquals(instance.OfficeSymbol, configuration.OfficeSymbolDelegate(instance)));
}