/**

  * Back 2 Browser Bytecode Translator

  * Copyright (C) 2012 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.bck2brwsr.tck;

 import java.io.ByteArrayOutputStream;

 import java.io.PrintStream;

 import org.apidesign.bck2brwsr.core.ExtraJavaScript;

 import org.apidesign.bck2brwsr.core.JavaScriptBody;

 import org.apidesign.bck2brwsr.vmtest.Compare;

 import org.apidesign.bck2brwsr.vmtest.VMTest;

 import org.testng.annotations.Factory;

 /**

  *

  * @author Jaroslav Tulach <jtulach@netbeans.org>

  */

 @ExtraJavaScript(resource = "/org/apidesign/bck2brwsr/tck/console.js")

 public class SystemTest {

     @Compare public boolean nonNullOSName() {

         return System.getProperty("os.name") != null;

     }

     @Compare public String captureStdOut() throws Exception {

         Object capture = initCapture();

         System.out.println("Ahoj");

         return textCapture(capture);

     }

     @JavaScriptBody(args = {}, body = ""

         + "var lines = [];"

         + "console.log = function(l) { lines.push(l); };"

         + "return lines;")

     Object initCapture() {

         ByteArrayOutputStream os = new ByteArrayOutputStream();

         PrintStream ps = new PrintStream(os);

         System.setOut(ps);

         return os;

     }

     @JavaScriptBody(args = { "o" }, body = "return o.join('');")

     String textCapture(Object o) throws java.io.IOException {

         ByteArrayOutputStream b = (ByteArrayOutputStream) o;

         return new String(b.toByteArray(), "UTF-8");

     }

     @Factory public static Object[] create() {

         return VMTest.create(SystemTest.class);

     }

 }