/*
 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */


/* Execute testcases by reading names from a given file, due to limits of
 * the operating system regarding command line size (windows: 32k,
 * linux [depending on the settings]: ~2097k)
 * see http://msdn.microsoft.com/en-us/library/ms682425%28VS.85%29.aspx
 */

import org.junit.runner.*;
import java.io.*;
import java.util.*;

public class JUnitWrapper {

    /**
     * @param args
     *            args[0] is the path where to read the names of the testclasses.
     */
    public static void main(String[] args) {
        if (args.length == 0) {
            System.err.printf("wrong usage. provide a filename\n");
            System.exit(1);
        }
        ArrayList<String> tests = new ArrayList<String>(1000);
        BufferedReader br = null;
        try {
            br = new BufferedReader(new FileReader(args[0]));

            String buf;
            while ((buf = br.readLine()) != null) {
                tests.add(buf);
            }
        } catch (IOException ioe) {
            ioe.printStackTrace();
            System.exit(2);
        } finally {
            try {
                if (br != null) {
                    br.close();
                }
            } catch (IOException ioe) {
                ioe.printStackTrace();
                System.exit(3);
            }
        }

        String[] strargs = tests.toArray(new String[tests.size()]);
        if (strargs.length == 1) {
            System.out.printf("executing junit test now... (%s)\n", strargs[0]);
        } else {
            System.out.printf("executing junit tests now... (%d test classes)\n", strargs.length);
        }
        JUnitCore.main(strargs);
    }
}