public void BELIntegerLessThanOrEqualToTest()
 {
     BELInteger left = new BELInteger(4);
     Assert.IsTrue(left.LessThanOrEqualTo(5));
     Assert.IsTrue(left.LessThanOrEqualTo(4));
     Assert.IsFalse(left.LessThanOrEqualTo(3));
 }