1 /*
   2  * Copyright (c) 2001, 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 4403355
  27  * @summary Checks that PNGImage{Reader,Writer}Spi.getStreamMetadataFormatNames
  28  *          and getNativeStreamMetadataFormatName return null
  29  * @modules java.desktop/com.sun.imageio.plugins.png
  30  */
  31 
  32 import javax.imageio.spi.ImageReaderSpi;
  33 import javax.imageio.spi.ImageWriterSpi;
  34 
  35 import com.sun.imageio.plugins.png.PNGImageReaderSpi;
  36 import com.sun.imageio.plugins.png.PNGImageWriterSpi;
  37 
  38 public class PNGSpiStreamMetadata {
  39 
  40     private static void fatal() {
  41         throw new RuntimeException("Got a non-null stream metadata format!");
  42     }
  43 
  44     public static void main(String[] args) {
  45         ImageReaderSpi rspi = new PNGImageReaderSpi();
  46         if (rspi.getNativeStreamMetadataFormatName() != null) {
  47             fatal();
  48         }
  49         if (rspi.isStandardStreamMetadataFormatSupported() != false) {
  50             fatal();
  51         }
  52         if (rspi.getExtraStreamMetadataFormatNames() != null) {
  53             fatal();
  54         }
  55 
  56         ImageWriterSpi wspi = new PNGImageWriterSpi();
  57         if (wspi.getNativeStreamMetadataFormatName() != null) {
  58             fatal();
  59         }
  60         if (wspi.isStandardStreamMetadataFormatSupported() != false) {
  61             fatal();
  62         }
  63         if (wspi.getExtraStreamMetadataFormatNames() != null) {
  64             fatal();
  65         }
  66     }
  67 }