public void property_can_only_have_one_preferred_picture()
{
// arrange
var pic1 = new PropertyPicture { PictureUrl="pic1.png"};
var pic2 = new PropertyPicture { PictureUrl="pic2.png"};
var pic3 = new PropertyPicture { PictureUrl="pic3.png"};
_property.Pictures.Add(pic1);
_property.Pictures.Add(pic2);
_property.Pictures.Add(pic3);
_property.SetPreferredPicture(pic1);
Assert.AreEqual(1, _property.Pictures.Count(p=>p.PreferredPicture == true));
//act
_property.SetPreferredPicture(pic2);
// assert
Assert.AreEqual(1, _property.Pictures.Count(p=>p.PreferredPicture == true));
}
public virtual void SetPreferredPicture(PropertyPicture picture)
{
foreach (var p in Pictures)
{
p.SetPreferredPicture(false);
}
Pictures.Single(p => p == picture).SetPreferredPicture(true);
}