NUnit comparing two lists

If you’re comparing two lists, you should use test using collection constraints.

Assert.That(actual, Is.EquivalentTo(expected));

Also, in your classes, you will need to override the Equals method, otherwise like gleng stated, the items in the list are still going to be compared based on reference.

Simple override example:

public class Example
{
    public int ID { get; set; }

    public override bool Equals(object obj)
    {
        return this.ID == (obj as Example).ID;
    }
}