/*

 * Copyright (c) 2010, 2015, 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

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 * questions.

 */

/*

 * @test

 * @bug 6942649

 * @summary add hidden option to identify location and version of javac classes

 * @modules jdk.compiler

 */

import java.io.*;

public class T6942649 {

    public static void main(String... args) throws Exception {

        new T6942649().run();

    }

    void run() throws Exception {

        test("-XDshowClass", "com.sun.tools.javac.Main", false);

        test("-XDshowClass=com.sun.tools.javac.util.Log", "com.sun.tools.javac.util.Log", false);

    }

    void test(String opt, String clazz, boolean checkLocation) throws Exception {

        System.err.println("test " + opt);

        StringWriter sw = new StringWriter();

        PrintWriter pw = new PrintWriter(sw);

        int rc = com.sun.tools.javac.Main.compile(new String[] { opt }, pw);

        pw.close();

        String out = sw.toString();

        System.err.println("javac rc=" + rc + "\n" + out);

        if (!out.contains(clazz))

            throw new Exception("class name not found in output");

        // (JDK 9) We can no longer guarantee to be able to show a URL for the

        // location of the class, especially when the class is in the system image

        if (checkLocation) {

            int lastDot = clazz.lastIndexOf(".");

            if (!out.contains(clazz.substring(lastDot + 1) + ".class"))

                throw new Exception("location of class not found in output");

        }

        if (!out.contains("MD5 checksum: "))

            throw new Exception("checksum not found in output");

    }

}