using FluentAssertions;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System;

namespace ForExcludeBug
{
    public class Class1 { public Class2[] objs; }
    public class Class2 { public Class3 subobj; }
    public class Class3 { public string foo; }

    [TestClass]
    public class UnitTest1
    {
        [TestMethod]
        public void TestMethod1()
        {
            var expected = new Class1 { objs = new Class2[] { new Class2 { subobj = new Class3 { foo = "foo"} } } };
            var sut = new Class1 { objs = new Class2[] { new Class2 { subobj = new Class3 { foo = "bar" } } } };

            sut.Should().BeEquivalentTo(expected, options => options.For(x => x.objs).Exclude(x => x.subobj.foo));

        }

        [TestMethod]
        public void OKExample()
        {
            var expected = new Class1 { objs = new Class2[] { new Class2 { subobj = new Class3 { foo = "foo" } } } };
            var sut = new Class1 { objs = new Class2[] { new Class2 { subobj = new Class3 { foo = "bar" } } } };

            sut.Should().BeEquivalentTo(expected, options => options.Excluding(x => x.objs[0].subobj.foo));

        }
    }
}