Simple ProjectTo throws Exception, stating an incorrect Property type

[pothos-dev]

When I use this simple test program:

using System;
using System.Linq;
using AutoMapper;
using AutoMapper.QueryableExtensions;

public class Foo
{
    public int A;
}

public class FooDto
{
    public int A;
}

public class Program
{
    public static void Main(string[] args)
    {
        Mapper.Initialize(cfg =>
        {
            cfg.CreateMap<Foo, FooDto>();
        });

        var arr = Enumerable
            .Range(0, 10)
            .Select(i => new Foo {A = i})
            .AsQueryable()
            .ProjectTo<FooDto>()
            .ToArray();

        Console.WriteLine(arr[7].A);
    }
}

The query fails with an AutoMapperMappingException.

Unable to create a map expression from Foo.A (Foo) to FooDto.A (System.Int32)

Mapping types:
Foo -> FooDto
Foo -> FooDto

Type Map configuration:
Foo -> FooDto
Foo -> FooDto

Property:
A

Foo.A (an int) is called a Foo by the exception.
The PropertyMap correctly identifies the SourceType as System.Int32.
Mapper.Map<FooDto>(new Foo()) also works as expected.
It does not matter if I use the static configuration method or create an instance of mapper and pass it to ProjectTo().

If I adjust the configuration like this:

        Mapper.Initialize(cfg =>
        {
            cfg.CreateMap<Foo, FooDto>().ForMember(
                dto => dto.A,
                conf => conf.MapFrom(foo => foo.A));
        });

The error goes away.

[lbargaoanu]

It's a bug, but properties work.

[lock]

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