/*
* Copyright 2007, 2008, 2009 Duncan McGregor
*
* This file is part of Rococoa, a library to allow Java to talk to Cocoa.
*
* Rococoa is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Rococoa 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Rococoa. If not, see <http://www.gnu.org/licenses/>.
*/
package org.rococoa;
import org.junit.After;
import org.junit.Test;
import org.rococoa.cocoa.foundation.NSAutoreleasePool;
import org.rococoa.test.RococoaTestCase;
/**
* NSAutoreleasePool's behaviour wrt retain counts is interesting.
* <p/>
* Mike Swingler - "NSAutoreleasePools are magical, and are not actually
* allocated or released objects (though you get a point(er) to an id that does
* respond to selectors...but that's no different than an @"some string" constant."
* <p/>
* This test documents the observed behaviour.
*/
public class NSAutoreleasePoolTest {
private NSAutoreleasePool pool;
private ID idString;
@Test
public void nothingAffectsReferenceCount() {
RococoaTestCase.assertRetainCount(1, pool);
pool.drain();
RococoaTestCase.assertRetainCount(1, pool);
pool.release();
RococoaTestCase.assertRetainCount(1, pool);
Foundation.cfRelease(pool.id());
RococoaTestCase.assertRetainCount(1, pool);
}
public NSAutoreleasePoolTest() {
idString = Foundation.cfString("test");
pool = NSAutoreleasePool.new_();
Foundation.cfRetain(idString); // keep from being deallocated
Foundation.sendReturnsID(idString, "autorelease");
RococoaTestCase.assertRetainCount(2, idString);
}
@After
public void tearDown() {
Foundation.cfRelease(idString);
}
@Test
public void drainReleasesContents() {
pool.drain();
RococoaTestCase.assertRetainCount(1, idString);
}
@Test
public void releaseReleasesContents() {
pool.release();
RococoaTestCase.assertRetainCount(1, idString);
}
@Test
public void cfReleaseReleasesContents() {
Foundation.cfRelease(pool.id());
RococoaTestCase.assertRetainCount(1, idString);
}
@Test
public void drainOnAnotherThreadDoesntRelease() throws InterruptedException {
// If you are making Cocoa calls outside of the Application Kit’s main thread—for example
// if you create a Foundation-only application or if you detach a thread—you need to create
// your own autorelease pool.
Thread thread = new Thread("test") {
public void run() {
NSAutoreleasePool second = NSAutoreleasePool.new_();
second.drain();
}
};
thread.start();
thread.join();
RococoaTestCase.assertRetainCount(2, idString);
}
}