public void Implements_ICoordinateSystem_YAxis() { ICoordinateSystem matrix = new Matrix( 11, 12, 13, 14, 21, 22, 23, 24, 31, 32, 33, 34, 41, 42, 43, 44); Vector3 yAxis = matrix.YAxis; Assert.AreEqual(new Vector3(12, 22, 32), yAxis); }