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/*
* Copyright (c) 2023, 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.
*/
/*
* @test
* @bug 8081474
* @summary Verifies if SwingWorker calls 'done'
* before the 'doInBackground' is finished
* @run main TestDoneBeforeDoInBackground
*/
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeEvent;
import javax.swing.SwingWorker;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
public class TestDoneBeforeDoInBackground {
private static final int WAIT_TIME = 200;
private static final long CLEANUP_TIME = 1000;
private static final AtomicBoolean doInBackgroundStarted = new AtomicBoolean(false);
private static final AtomicBoolean doInBackgroundFinished = new AtomicBoolean(false);
private static final AtomicBoolean doneFinished = new AtomicBoolean(false);
private static final CountDownLatch doneLatch = new CountDownLatch(1);
public static void main(String[] args) throws InterruptedException {
SwingWorker<String, String> worker = new SwingWorker<>() {
@Override
protected String doInBackground() throws Exception {
try {
while (!Thread.currentThread().isInterrupted()) {
System.out.println("Working...");
Thread.sleep(WAIT_TIME);
}
} catch (InterruptedException ex) {
System.out.println("Got interrupted!");
}
try {
doInBackgroundStarted.set(true);
System.out.println("Cleaning up");
Thread.sleep(CLEANUP_TIME);
System.out.println("Done cleaning");
doInBackgroundFinished.set(true);
} catch (InterruptedException ex) {
System.out.println("Got interrupted second time!");
}
return null;
}
@Override
protected void done() {
if (!doInBackgroundFinished.get()) {
throw new RuntimeException("done called before " +
"doInBackground is finished");
}
System.out.println("Done");
doneFinished.set(true);
doneLatch.countDown();
}
};
worker.addPropertyChangeListener(
new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent evt) {
System.out.println("doInBackgroundStarted: " +
doInBackgroundStarted.get() +
" doInBackgroundFinished: " +
doInBackgroundFinished.get() +
" done: " + doneFinished.get() +
" state: " + worker.getState());
// Before doInBackground method is invoked,
// SwingWorker notifies PropertyChangeListeners about the
// property change to StateValue.STARTED
if (doInBackgroundStarted.get()
&& worker.getState() == SwingWorker.StateValue.STARTED) {
throw new RuntimeException(
"PropertyChangeListeners called with " +
"state STARTED after doInBackground is invoked");
}
// Ensure DONE state is notified AFTER
// doInBackground is finished AND done is invoked
if (doInBackgroundFinished.get() && !doneFinished.get()
&& worker.getState() == SwingWorker.StateValue.DONE) {
throw new RuntimeException(
"done method is NOT executed but state is DONE");
}
// After the doInBackground method is finished
// SwingWorker notifies PropertyChangeListeners
// property change to StateValue.DONE
if (worker.getState() != SwingWorker.StateValue.DONE
&& doInBackgroundFinished.get()) {
throw new RuntimeException(
"PropertyChangeListeners called after " +
"doInBackground is finished but before State changed to DONE");
}
}
});
worker.execute();
Thread.sleep(WAIT_TIME * 3);
final long start = System.currentTimeMillis();
worker.cancel(true);
final long end = System.currentTimeMillis();
if ((end - start) > 100) {
throw new RuntimeException("Cancel took too long: "
+ ((end - start) / 1000.0d) + " s");
}
if (!doneLatch.await(CLEANUP_TIME + 1000L, TimeUnit.MILLISECONDS)) {
throw new RuntimeException("done didn't complete in time");
}
System.out.println("doInBackground " + doInBackgroundFinished.get() +
" getState " + worker.getState());
if (worker.getState() != SwingWorker.StateValue.DONE
&& doInBackgroundFinished.get()) {
throw new RuntimeException("doInBackground is finished " +
"but State is not DONE");
}
}
}
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