public void SetLoader() { var subClass = typeof(Inherited); var mapdoc = new HbmMapping(); var mapper = new JoinedSubclassMapper(subClass, mapdoc); mapper.Loader("blah"); var hbmEntity = mapdoc.JoinedSubclasses[0]; hbmEntity.SqlLoader.Should().Not.Be.Null(); hbmEntity.SqlLoader.queryref.Should().Be("blah"); }