public void QuaternionConjugateTest1() { Quaternion a = new Quaternion(1, 2, 3, 4); Quaternion expected = new Quaternion(-1, -2, -3, 4); Quaternion actual; actual = Quaternion.Conjugate(a); Assert.True(MathHelper.Equal(expected, actual), $"Quaternion.Conjugate did not return the expected value: expected {expected} actual {actual}"); }