public void GetBox2d() { double speed = 1; // 1 m / ms double deltaMS = 10; double explength = speed * deltaMS; Box2d expected = new Box2d(10 + explength, 20, 0, explength, -0.01, 0.01, 0); Shot shot = new Shot(Calc.v(10, 20), 0, speed, 0); shot.Tick(deltaMS); Box2d result = shot.GetBox2d(); Assert.AreEqual(expected, result); }