text: /*
   * 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.netbeans.swing.tabcontrol.plaf;
  
  import java.awt.Component;
  import java.awt.GraphicsEnvironment;
  import java.lang.ref.WeakReference;
  import java.util.Collections;
  import javax.swing.JFrame;
  import javax.swing.JLabel;
  import javax.swing.JPanel;
  import junit.framework.Test;
  import junit.framework.TestSuite;
  import org.netbeans.junit.NbTestCase;
  
  /**
   *
   * @author Dafe Simonek
   */
  public class StackLayoutTest extends NbTestCase {
  
      public static Test suite() {
          return GraphicsEnvironment.isHeadless() ? new TestSuite() : new TestSuite(StackLayoutTest.class);
      }
  
      public StackLayoutTest(String testName) {
          super(testName);
      }
      
      public void test_100486 () throws Exception {
          StackLayout layout = new StackLayout();
          JPanel panel = new JPanel(layout);
          JLabel testLabel = new JLabel("test label");
          panel.add(testLabel);
          JFrame frame = new JFrame();
          frame.getContentPane().add(panel);
          layout.showComponent(testLabel, panel);
          frame.setVisible(true);
          
          frame.setVisible(false);
          frame.getContentPane().remove(panel);
          panel = null;
          frame = null;
          WeakReference<Component> weakTestLabel = new WeakReference<Component>(testLabel);
          testLabel = null;
          
          assertGC("visibleComp member of StackLayout still not GCed", weakTestLabel, Collections.singleton(layout));
      }
      
  }
  