1 /*
   2  * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 4936445
  27  * @summary This test verifies whether setting the order reversely between 2 spi
  28  *          objects removes the previous ordering that was set between the
  29  *          same set of spi objects. This is verified by invoking
  30  *          unsetOrdering() method twice consecutively with respect to the same
  31  *          spi objects and unsetOrdering() is supposed to return false when
  32  *          called for the second time.
  33  * @modules java.desktop/com.sun.imageio.plugins.gif
  34  *          java.desktop/com.sun.imageio.plugins.png
  35  */
  36 
  37 import javax.imageio.spi.IIORegistry;
  38 import javax.imageio.spi.ImageReaderSpi;
  39 import javax.imageio.spi.ServiceRegistry;
  40 
  41 public class OrderingTest {
  42 
  43     public OrderingTest() {
  44 
  45          ServiceRegistry reg = IIORegistry.getDefaultInstance();
  46          ImageReaderSpi gifSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.gif.GIFImageReaderSpi.class);
  47          ImageReaderSpi pngSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.png.PNGImageReaderSpi.class);
  48 
  49          boolean ordered = reg.setOrdering(ImageReaderSpi.class, gifSpi, pngSpi);
  50 
  51          ordered = reg.setOrdering(ImageReaderSpi.class, pngSpi, gifSpi);
  52 
  53          boolean unordered = reg.unsetOrdering(ImageReaderSpi.class, gifSpi,
  54                                                pngSpi);
  55          boolean unordered1 = reg.unsetOrdering(ImageReaderSpi.class, gifSpi,
  56                                                 pngSpi);
  57 
  58          if (unordered1) {
  59              throw new RuntimeException("FAIL: Ordering 2 spi objects in the  "
  60                                         + "reverse direction does not remove the previous ordering "
  61                                         + "set between the spi objects and hence unsetOrdering() "
  62                                         + "returns true for the same spi objects when called consecutively");
  63          } else {
  64              System.out.println("PASS");
  65          }
  66 
  67      }
  68 
  69      public static void main(String args[]) {
  70          OrderingTest test = new OrderingTest();
  71      }
  72 }