Node<Integer,?> c = new IntegerNode(14);
Node<Integer,?> d = new IntegerNode(15);
Node<Integer,?> expr1 = new ArithmeticNode(Operator.plus, a, b);
Node<Integer,?> expr2 = new ArithmeticNode(Operator.minus, c, d);
Node<Boolean,?> expr = new RelationalNode(Relation.GT, expr1, expr2);
assertEquals(true, expr.eval(null).booleanValue());
}
}