Coin Changer kata in C# using NUnit

ChangerTests.cs

using System.Collections.Generic;
using System.Linq;
using NUnit.Framework;

namespace CoinChanger
{
    [TestFixture]
    public class ChangerTests
    {
        [TestCase(new int[]{}, 0, Result = new int[]{}, TestName="No coins for 0 cents")]
        [TestCase(new[]{1}, 0, Result = new[]{0}, TestName="Pennies for 0 cents")]
        [TestCase(new[]{1}, 1, Result = new[]{1}, TestName="Pennies for 1 cents")]
        [TestCase(new[]{1}, 4, Result = new[]{4}, TestName="Pennies for 4 cents")]
        [TestCase(new[]{5, 1}, 5, Result = new[]{1, 0}, TestName="Nickles and Pennies for 5 cents")]
        [TestCase(new[]{5, 1}, 8, Result = new[]{1, 3}, TestName="Nickles and Pennies for 8 cents")]
        [TestCase(new[]{25, 10, 5, 1}, 99, Result = new[]{3, 2, 0, 4}, TestName="Quarters, Dimes, Nickles and Pennies for 99 cents")]
        public IList<int> Given_Nothing_For_0_It_Must_Give_Empty_Back(IList<int> coins, int amount)
        {
            var changer = new Changer
            {
                Coins = coins
            };

            return changer.For(amount);
        }
    }

    public class Changer
    {
        public IList<int> Coins { get; set; }

        public IList<int> For(int amount)
        {
            if (!Coins.Any()) return new List<int>();

            return Coins.Aggregate(new Working {Amount = amount, Result = new List<int>()},
                (m, coin) =>
                {
                    m.Result.Add(m.Amount/coin);
                    m.Amount %= coin;
                    return m;
                }).Result;
        }

        class Working
        {
            public int Amount { get; set; }
            public IList<int> Result { get; set; }
        }
    }
}