How to mock a method call that takes a dynamic object

Question

Say I have the following:

public interface ISession 
{
   T Get(dynamic filter); }
}

And I have the following code that I want to

Answer 1

First of all, anonymous objects are not really dynamic.

If you used dynamic objects like

dynamic user1Filter = new ExpandoObject();
user1Filter.Name = "test 1";
var user1 = session.Get(user1Filter);

you could mock it like

sessionMock.Setup(x => x.Get(DynamicFilter.HasName("test 1")));

by implementing custom argument matcher:

static class DynamicFilter
{
    [Matcher] public static object HasName(string name) { return null; }
    public static bool HasName(dynamic filter, string name)
    {
        string passedName = filter.Name; //dynamic expression
        return name.Equals(passedName);
    }
}