public void Should_be_able_to_add_a_new_domain_object_to_the_identitiy_map()
{
IDomainObject objectThatHasBeenAddedToMap = new DomainObject(1);
IDomainObject objectThatHasNotBeenAddedToMap = new DomainObject(2);
IIdentityMap <IDomainObject> map = CreateSUT( );
map.Add(objectThatHasBeenAddedToMap);
Assert.IsTrue(map.ContainsObjectWithIdOf(objectThatHasBeenAddedToMap.ID( )));
Assert.IsFalse(map.ContainsObjectWithIdOf(objectThatHasNotBeenAddedToMap.ID( )));
}