public void QuaternionConcatenateTest1()
{
Quaternion b = new Quaternion(1.0f, 2.0f, 3.0f, 4.0f);
Quaternion a = new Quaternion(5.0f, 6.0f, 7.0f, 8.0f);
Quaternion expected = new Quaternion(24.0f, 48.0f, 48.0f, -6.0f);
Quaternion actual;
actual = Quaternion.Concatenate(a, b);
Assert.True(MathHelper.Equal(expected, actual), $"Quaternion.Concatenate did not return the expected value: expected {expected} actual {actual}");
}