test/jdk/javax/swing/BasicMenuUI/bug4244616.java

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 * version 2 for more details (a copy is included in the LICENSE file that
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/*
 * @test
 * @bug 4244616
 * @summary Tests that debug output in BasicMenuUI private inner classes
 *          is commented out
 */

import java.awt.event.ActionEvent;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import javax.swing.Action;
import javax.swing.ActionMap;
import javax.swing.JMenu;
import javax.swing.plaf.basic.BasicMenuUI;

public class bug4244616 {
    public static void main(String[] argv) throws Exception {
        JMenu menu = new JMenu();
        BasicMenuUI ui = new BasicMenuUI();
        ui.installUI(menu);
        ActionMap amap = menu.getActionMap();

        String[] names = {"selectMenu", "cancel",
                "selectNext", "selectPrevious"};
        ActionEvent ev = new ActionEvent(menu,
                ActionEvent.ACTION_PERFORMED, "test event");

        // Stream redirection
        final PrintStream oldOut = System.out;
        final PrintStream oldErr = System.err;
        try (ByteArrayOutputStream bout = new ByteArrayOutputStream();
             ByteArrayOutputStream berr = new ByteArrayOutputStream();
             PrintStream out = new PrintStream(bout);
             PrintStream err = new PrintStream(berr)) {
            for (int i = 0; i < names.length; i++) {
                Action action = amap.get(names[i]);
                try {
                    action.actionPerformed(ev);
                } catch (Exception ignored) {
                }
            }

            if (bout.size() != 0 || berr.size() != 0) {
                System.out.println("bout: " + bout);
                System.out.println("berr: " + berr);
                throw new RuntimeException("Failed: some debug output occurred");
            }
        } finally {
            // Restore streams
            System.setOut(oldOut);
            System.setErr(oldErr);
        }
    }
}