test/javax/swing/SwingWorker/6880336/NestedWorkers.java

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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/* @test
 * @bug 6880336
 * @summary Test for nested SwingWorkers, i.e. when the second worker is
started from the first's doInBackground() method. A timeout when running
* this test is an indication of failure.
 * @author Artem Ananiev
 * @run main/timeout=32 NestedWorkers
 */

import javax.swing.*;

public class NestedWorkers extends SwingWorker<String, Void> {

    private final static int MAX_LEVEL = 2;

    private int level;

    public NestedWorkers(int level) {
        super();
        this.level = level;
    }

    @Override
    public String doInBackground() throws Exception {
        if (level < MAX_LEVEL) {
            SwingWorker<String, Void> nested = new NestedWorkers(level + 1);
            nested.execute();
            nested.get();
        }
        System.out.println("doInBackground " + level + " is complete");
        return String.valueOf(level);
    }

    public static void main(String[] args) throws Exception {
        SwingUtilities.invokeAndWait(new Runnable() {
            @Override
            public void run() {
                SwingWorker<String, Void> sw = new NestedWorkers(0);
                sw.execute();
                try {
                    System.err.println(sw.get());
                } catch (Exception z) {
                    throw new RuntimeException(z);
                }
            }
        });
    }

}