public void QuaternionSubtractTest()
{
Quaternion a = new Quaternion(1.0f, 6.0f, 7.0f, 4.0f);
Quaternion b = new Quaternion(5.0f, 2.0f, 3.0f, 8.0f);
Quaternion expected = new Quaternion(-4.0f, 4.0f, 4.0f, -4.0f);
Quaternion actual;
actual = Quaternion.Subtract(a, b);
Assert.Equal(expected, actual);
}
