public void CompareToTest() { var pv1 = new PROPVARIANT(1); var pv2 = new PROPVARIANT(1); var pv3 = new PROPVARIANT(5f); Assert.That(pv1.CompareTo(pv2), Is.EqualTo(0)); Assert.That(pv1.CompareTo(pv3), Is.LessThan(0)); Assert.That(pv3.CompareTo(pv1), Is.GreaterThan(0)); }