public void UserInterfaceManager_can_add_ErrorMessages_and_retrieve_them()
{
const string errorMessage1 = "how dare you!";
const string errorMessage2 = "STOP IT!";
var messageQueue = new Queue<string>();
var userSession = new Mock<IUserSession>();
userSession.Setup(x => x.GetMessages()).Returns(messageQueue);
var provider = new UserInterfaceManager(userSession.Object);
provider.AddMessage(errorMessage1);
provider.AddMessage(errorMessage2);
var messages = provider.GetMessages();
messages.Count().ShouldEqual(2);
}