package org.apidesign.test.visitor;

import org.apidesign.test.visitor.PrintTest.PrintVisitor;

import static junit.framework.Assert.*;

import org.apidesign.visitor.notevolutionready.Language.Expression;

import org.apidesign.visitor.notevolutionready.Language.Minus;

import org.apidesign.visitor.notevolutionready.Language.Number;

import org.apidesign.visitor.notevolutionready.Language.Plus;

import org.apidesign.visitor.notevolutionready.Language.Visitor;

import org.junit.Test;

public class PrintOfMinusStructureTest {

    @Test public void printOneMinusTwo() {

        // BEGIN: visitor.notevolutionready.oldwithnew

        Number one = new Number(1);

        Number two = new Number(2);

        Expression plus = new Minus(one, two);

        PrintVisitor print = new PrintVisitor();

        plus.visit(print); // fails with AbstractMethodError

        assertEquals("1 - 2", print.sb.toString());

        // END: visitor.notevolutionready.oldwithnew

    }

}