/**

  * Back 2 Browser Bytecode Translator

  * Copyright (C) 2012-2015 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

  *

  * This program is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, version 2 of the License.

  *

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with this program. Look for COPYING file in the top folder.

  * If not, see http://opensource.org/licenses/GPL-2.0.

  */

 package org.apidesign.vm4brwsr;

 import javax.script.ScriptEngine;

 import javax.script.ScriptEngineManager;

 import static org.testng.Assert.*;

 import org.testng.annotations.Test;

 /**

  *

  * @author Jaroslav Tulach

  */

 public class StackMapperTest {

     public StackMapperTest() {

     }

     @Test public void replaceValueThatAnotherReplaceDependsOn()

     throws Exception {

         StringBuilder sb = new StringBuilder();

         StackMapper smapper = new StackMapper();

         smapper.assign(sb, VarType.INTEGER, "0");

         smapper.assign(sb, VarType.REFERENCE, "arr");

         smapper.assign(sb, VarType.INTEGER, "33");

         smapper.replace(sb, VarType.INTEGER, "@2[@1]", 

             smapper.popI(), smapper.getA(0)

         );

         smapper.replace(sb, VarType.INTEGER, "(@1) + (@2)", 

             smapper.getI(1), smapper.popI()

         );

         smapper.assign(sb, VarType.REFERENCE, "arr");

         smapper.assign(sb, VarType.INTEGER, "22");

         smapper.replace(sb, VarType.INTEGER, "@2[@1]", 

             smapper.popI(), smapper.getA(0)

         );

         smapper.replace(sb, VarType.INTEGER, "(@1) + (@2)", 

             smapper.getI(1), smapper.popI()

         );

         smapper.flush(sb);

         ScriptEngineManager sem = new ScriptEngineManager();

         ScriptEngine em = sem.getEngineByMimeType("text/javascript");

         Object ret = em.eval("var arr= []; arr[33] = 40; arr[22] = 2; " + sb + "; stI0;");

         assertTrue(ret instanceof Number, "Result is number: " + ret);

         assertEquals(((Number)ret).intValue(), 42, "Right value");

     }

 }