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 4429365
  27  * @summary Checks that ImageReadParam.setSourceProgressivePasses handles
  28  *          overflow correctly
  29  */
  30 
  31 import javax.imageio.ImageReadParam;
  32 
  33 public class ImageReadParamPasses {
  34 
  35     private static final int maxint = Integer.MAX_VALUE;
  36 
  37     private static void expect(int i, int j) {
  38         if (i != j) {
  39             throw new RuntimeException("Expected " + i + ", got " + j);
  40         }
  41     }
  42 
  43     private static void checkForIAE(int minPass, int numPasses) {
  44         ImageReadParam param = new ImageReadParam();
  45 
  46         boolean gotIAE = false;
  47         try {
  48             param.setSourceProgressivePasses(minPass, numPasses);
  49         } catch (IllegalArgumentException iae) {
  50             gotIAE = true;
  51         }
  52         if (!gotIAE) {
  53             throw new RuntimeException("Failed to get IAE for wraparound!");
  54         }
  55     }
  56 
  57     private static void test(int minPass, int numPasses) {
  58         ImageReadParam param = new ImageReadParam();
  59 
  60         param.setSourceProgressivePasses(minPass, numPasses);
  61         expect(param.getSourceMinProgressivePass(), minPass);
  62         expect(param.getSourceNumProgressivePasses(), numPasses);
  63 
  64         int maxPass = numPasses == maxint ? maxint : minPass + numPasses - 1;
  65         expect(param.getSourceMaxProgressivePass(), maxPass);
  66     }
  67 
  68     public static void main(String[] args) {
  69         // Typical case
  70         test(17, 30);
  71 
  72         // Read all passes
  73         test(0, maxint);
  74 
  75         // Start at pass 17, continue indefinitely
  76         test(17, maxint);
  77 
  78         // Start at pass maxint - 10, continue indefinitely
  79         test(maxint - 10, maxint);
  80 
  81         // Start at pass maxint - 10, go up to maxint - 1
  82         test(maxint - 10, 10);
  83 
  84         // Start at pass maxint - 10, go up to maxint
  85         test(maxint - 10, 11);
  86 
  87         // Start at maxint, continue indefinitely :-)
  88         test(maxint, maxint);
  89 
  90         // Start at maxint, go up to maxint
  91         test(maxint, 1);
  92 
  93         // Check that an IllegalArgumentException is thrown if
  94         // wraparound occurs
  95         checkForIAE(maxint, 2);
  96         checkForIAE(maxint - 5, 10);
  97         checkForIAE(10, maxint - 5);
  98         checkForIAE(maxint - 1000, maxint - 1000);
  99         checkForIAE(maxint - 1, maxint - 1);
 100     }
 101 }