1 /*
   2  * Copyright (c) 2004, 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 4895547
  27  * @summary Test verifies that mergeTree() of JPEGMetadata does not throw the
  28  *          NPE
  29  */
  30 
  31 import java.awt.image.BufferedImage;
  32 import java.io.File;
  33 import java.io.IOException;
  34 
  35 import javax.imageio.ImageIO;
  36 import javax.imageio.ImageTypeSpecifier;
  37 import javax.imageio.ImageWriter;
  38 import javax.imageio.metadata.IIOMetadata;
  39 import javax.imageio.stream.ImageOutputStream;
  40 
  41 import org.w3c.dom.Node;
  42 
  43 public class MergeTreeTest {
  44     public static void main(String[] args) throws IOException {
  45         ImageWriter iw =
  46             (ImageWriter)ImageIO.getImageWritersByFormatName("jpeg").next();
  47 
  48         ImageTypeSpecifier type =
  49             ImageTypeSpecifier.createFromBufferedImageType(BufferedImage.TYPE_INT_RGB);
  50 
  51         ImageOutputStream ios =
  52             ImageIO.createImageOutputStream(new File("MergeTreeTest.jpeg"));
  53         iw.setOutput(ios);
  54 
  55         IIOMetadata meta = iw.getDefaultImageMetadata(type, null);
  56 
  57         boolean isFailed = false;
  58 
  59         String[] fmts = meta.getMetadataFormatNames();
  60         for (int i=0; i<fmts.length; i++) {
  61             System.out.print("Format: " + fmts[i] + " ... ");
  62             Node root = meta.getAsTree(fmts[i]);
  63             try {
  64                 meta.mergeTree(fmts[i], root);
  65             } catch (NullPointerException e) {
  66                 throw new RuntimeException("Test failed for format " + fmts[i], e);
  67             }
  68             System.out.println("PASSED");
  69         }
  70     }
  71 }