public void Normalize_a_quaternion()
{
var testQuaternion = new Quaternion(-4, 8, 1, 9);
testQuaternion.Normalize();
Assert.AreEqual(testQuaternion.Q1, -0.31426968052, 1E-10);
Assert.AreEqual(testQuaternion.Q2, 0.62853936105, 1E-10);
Assert.AreEqual(testQuaternion.Q3, 0.07856742013, 1E-10);
Assert.AreEqual(testQuaternion.Q4, 0.70710678118, 1E-10);
}
