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 }