Automapper fails for objects with collections where items use ConvertUsing<>() - automapper

Question

My example:
class BoxVM {
int BoxId {get;set;}
List<ItemVM> Items {get;set;}
}
class Box {
int BoxId {get;set;}
List<Item> Items {get;set;}
}
With mapping config:
CreateMap<BoxVM, Box>();
CreateMap<ItemVM, Item>().ConvertUsing<ItemTypeConverter>();
When converting BoxVM will Items, the ItemTypeConverter is not called. Leaving an empty Items collection in Box.
The BoxId is being mapped correctly.
Am I missing a step?

Answer 1

Looks like it does work.
using System.Collections.Generic;
using AutoMapper;
[TestClass]
public class UnitTest1
{
[TestMethod]
public void TestMethod1()
{
Mapper.Initialize(cfg =>
{
cfg.CreateMap<BoxVM, Box>();
cfg.CreateMap<ItemVM, Item>().ConvertUsing<ItemTypeConverter>();
});
Mapper.AssertConfigurationIsValid();
var boxVm = new BoxVM()
{
Value1 = "5",
Items = new List<ItemVM> { new ItemVM { Name = "Item1" } }
};
var result = Mapper.Map<BoxVM, Box>(boxVm);
Assert.AreEqual(1, result.Items.Count);
}
}
public class Box
{
public string Value1 { get; set; }
public List<Item> Items { get; set; }
}
public class Item
{
public string Name { get; set; }
}
public class BoxVM
{
public string Value1 { get; set; }
public List<ItemVM> Items { get; set; }
}
public class ItemVM
{
public string Name { get; set; }
}
public class ItemTypeConverter : ITypeConverter<ItemVM, Item>
{
public Item Convert(ItemVM source, Item destination, ResolutionContext context)
{
return new Item { Name = source.Name };
}
}