public void Addition()
{
QuaternionF a = new QuaternionF(1.0f, 2.0f, 3.0f, 4.0f);
QuaternionF b = new QuaternionF(2.0f, 3.0f, 4.0f, 5.0f);
QuaternionF c = QuaternionF.Add(a, b);
Assert.AreEqual(new QuaternionF(3.0f, 5.0f, 7.0f, 9.0f), c);
}