/**

 * 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);

    }

}