/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.openide.filesystems;

import java.io.File;
import java.lang.ref.Reference;
import java.lang.ref.WeakReference;
import java.util.logging.Logger;
import org.netbeans.junit.NbTestCase;

/**
 *
 * @author Jaroslav Tulach <jtulach@netbeans.org>
 */
public class FileChangeImplTest extends NbTestCase {
    
    public FileChangeImplTest(String n) {
        super(n);
    }

    @Override
    protected void setUp() throws Exception {
        clearWorkDir();
    }
    

    public void testReferringTransparency() throws Exception {
        File dir = new File(getWorkDir(), "dir");
        
        FileChangeListener fcl = new FileChangeAdapter();
        DeepListener dl1 = FileChangeImpl.addRecursiveListener(fcl, dir, null, null);
        FileChangeImpl.removeRecursiveListener(fcl, dir);
        
        DeepListener dl2 = FileChangeImpl.addRecursiveListener(fcl, dir, null, null);
        
        Reference<?> ref = new WeakReference<Object>(dl1);
        dl1 = null;
        assertGC("Nobody holds the old listener", ref);
        
        // Used to throw
        // java.lang.IllegalArgumentException: Was not listening to ...
        FileChangeImpl.removeRecursiveListener(fcl, dir);
    }
}
