I just verified that this works fine with xUnit.net 1.9.2:
public class MyClass
{
public int ID { get; set; }
public string Name { get; set; }
}
public class MyClassComparer : IEqualityComparer<MyClass>
{
public bool Equals(MyClass x, MyClass y)
{
return x.ID == y.ID;
}
public int GetHashCode(MyClass obj)
{
return obj.ID.GetHashCode();
}
}
public class ExampleTest
{
[Fact]
public void TestForEquality()
{
var obj1 = new MyClass { ID = 42, Name = "Brad" };
var obj2 = new MyClass { ID = 42, Name = "Joe" };
Assert.Equal(new[] { obj1 }, new[] { obj2 }, new MyClassComparer());
}
}
So I'm not 100% clear why you need the extra comparer. Just the single comparer should be sufficient.