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 4420318
  27  * @summary Checks that an IllegalStateException is thrown by getNumImages(true)
  28  *          when seekForwardOnly is true
  29  * @modules java.desktop/com.sun.imageio.plugins.gif
  30  *          java.desktop/com.sun.imageio.plugins.jpeg
  31  *          java.desktop/com.sun.imageio.plugins.png
  32  */
  33 
  34 import java.io.File;
  35 import java.io.IOException;
  36 
  37 import javax.imageio.ImageIO;
  38 import javax.imageio.ImageReader;
  39 import javax.imageio.stream.ImageInputStream;
  40 
  41 import com.sun.imageio.plugins.gif.GIFImageReader;
  42 import com.sun.imageio.plugins.jpeg.JPEGImageReader;
  43 import com.sun.imageio.plugins.png.PNGImageReader;
  44 
  45 public class AllowSearch {
  46 
  47     private static void test(ImageReader reader, String format)
  48         throws IOException {
  49         File f = File.createTempFile("imageio", ".tmp");
  50         ImageInputStream stream = ImageIO.createImageInputStream(f);
  51         reader.setInput(stream, true);
  52 
  53         boolean gotISE = false;
  54         try {
  55             int numImages = reader.getNumImages(true);
  56         } catch (IOException ioe) {
  57             gotISE = false;
  58         } catch (IllegalStateException ise) {
  59             gotISE = true;
  60         }
  61 
  62         if (!gotISE) {
  63             throw new RuntimeException("Failed to get desired exception for " +
  64                                        format + " reader!");
  65         }
  66     }
  67 
  68     public static void main(String[] args) throws IOException {
  69         ImageReader gifReader = new GIFImageReader(null);
  70         ImageReader jpegReader = new JPEGImageReader(null);
  71         ImageReader pngReader = new PNGImageReader(null);
  72 
  73         test(gifReader, "GIF");
  74         test(jpegReader, "JPEG");
  75         test(pngReader, "PNG");
  76     }
  77 }