test/jdk/java/awt/Desktop/DesktopGtkLoadTest/DesktopGtkLoadTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
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 * 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.
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/**
 * @test
 * @key headful
 * @bug 8157827
 * @summary AWT_Desktop/Automated/Exceptions/BasicTest loads incorrect GTK
 * version when jdk.gtk.version=3
 * @requires (os.family == "linux")
 * @run main DesktopGtkLoadTest
 */


import java.awt.*;
import java.io.*;

public class DesktopGtkLoadTest {
    public static class RunDesktop {
        public static void main(String[] args) {
            Desktop.getDesktop();
        }
    }

    public static void main(String[] args) throws Exception {
        Process p = Runtime.getRuntime().exec(System.getProperty("java.home") +
                "/bin/java -Djdk.gtk.version=3 -Djdk.gtk.verbose=true " +
                "-cp " + System.getProperty("java.class.path", ".") +
                " DesktopGtkLoadTest$RunDesktop");
        p.waitFor();
        try (BufferedReader br = new BufferedReader(
                                   new InputStreamReader(p.getErrorStream()))) {
            String line;
            while ((line = br.readLine()) != null) {
                System.out.println(line);
                if (line.contains("Looking for GTK2 library")) {
                    break;
                }
                if (line.contains("Looking for GTK3 library")) {
                    return;
                }
            }
            throw new RuntimeException("Wrong GTK library version: \n" + line);
        }

    }

}