public void LoginCommandExecuted_UsernameIsKnud_CollecterDoesUserExistReceivesKnud()
{
_sut.UserName = "******";
_sut.Password = "";
_sut.LoginCommand.Execute(null);
_collector.Received().DoesUserExist("Knud", Arg.Any <string>());
}
public void Login_UsernameIsBent_CollectorDoesUserExistReceivesBent()
{
_uut.Login("Bent", "");
_collector.Received().DoesUserExist("Bent", Arg.Any <string>());
}