ProjectCow.Spaceship.MoveUp C# (CSharp) Method

        public void MoveUp()
        {
            if (position.Y > TopBoundary)
                position.Y -= Speed;
        }

        public void MoveUpTest()
        {
            Spaceship spaceship = new Spaceship();
            spaceship.Y = 300;

            spaceship.MoveUp();

            Assert.AreEqual(300 - spaceship.Speed, spaceship.Y);
        }