/*

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 * 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).

 *

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 * 2 along with this work; if not, write to the Free Software Foundation,

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 */

/*

 * @test

 * @bug 4936445

 * @summary This test verifies whether setting the order reversely between 2 spi

 *          objects removes the previous ordering that was set between the

 *          same set of spi objects. This is verified by invoking

 *          unsetOrdering() method twice consecutively with respect to the same

 *          spi objects and unsetOrdering() is supposed to return false when

 *          called for the second time.

 * @modules java.desktop/com.sun.imageio.plugins.gif

 *          java.desktop/com.sun.imageio.plugins.png

 */

import javax.imageio.spi.IIORegistry;

import javax.imageio.spi.ImageReaderSpi;

import javax.imageio.spi.ServiceRegistry;

public class OrderingTest {

    public OrderingTest() {

         ServiceRegistry reg = IIORegistry.getDefaultInstance();

         ImageReaderSpi gifSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.gif.GIFImageReaderSpi.class);

         ImageReaderSpi pngSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.png.PNGImageReaderSpi.class);

         boolean ordered = reg.setOrdering(ImageReaderSpi.class, gifSpi, pngSpi);

         ordered = reg.setOrdering(ImageReaderSpi.class, pngSpi, gifSpi);

         boolean unordered = reg.unsetOrdering(ImageReaderSpi.class, gifSpi,

                                               pngSpi);

         boolean unordered1 = reg.unsetOrdering(ImageReaderSpi.class, gifSpi,

                                                pngSpi);

         if (unordered1) {

             throw new RuntimeException("FAIL: Ordering 2 spi objects in the  "

                                        + "reverse direction does not remove the previous ordering "

                                        + "set between the spi objects and hence unsetOrdering() "

                                        + "returns true for the same spi objects when called consecutively");

         } else {

             System.out.println("PASS");

         }

     }

     public static void main(String args[]) {

         OrderingTest test = new OrderingTest();

     }

}