public void CanUseMediator()
{
var helloWorld = "Hello world";
var left = new User("Robert");
var right = new User("Luc");
var com = new Communication(left, right);
com.Say(helloWorld);
Assert.AreEqual(string.Format("{0} says {1} to {2}", com.Left.Name, helloWorld, right.Name)
, left.Message);
}
