1 /*
   2  * Copyright (c) 2001, 2016, 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 /* @test
  25  * @bug 8065570
  26  * @summary Unit test for X-Buffer.order methods
  27  */
  28 
  29 import java.nio.*;
  30 
  31 
  32 public class Order {
  33 
  34     static final ByteOrder be = ByteOrder.BIG_ENDIAN;
  35     static final ByteOrder le = ByteOrder.LITTLE_ENDIAN;
  36     static final ByteOrder nord = ByteOrder.nativeOrder();
  37 
  38     protected static final int LENGTH = 16;
  39 
  40     static void ck(ByteOrder ord, ByteOrder expected) {
  41         if (ord != expected)
  42             throw new RuntimeException("Got " + ord + ", expected " + expected);
  43     }
  44 
  45     private static void ckViews(ByteBuffer bb) {
  46         ck(bb.asCharBuffer().order(), bb.order());
  47         ck(bb.asShortBuffer().order(), bb.order());
  48         ck(bb.asIntBuffer().order(), bb.order());
  49         ck(bb.asLongBuffer().order(), bb.order());
  50         ck(bb.asFloatBuffer().order(), bb.order());
  51         ck(bb.asDoubleBuffer().order(), bb.order());
  52     }
  53 
  54     private static void ckByteBuffer(ByteBuffer bb) {
  55         ckViews(bb);
  56         bb.order(be);
  57         ckViews(bb);
  58         bb.order(le);
  59         ckViews(bb);
  60 
  61         if (bb.hasArray()) {
  62             byte[] array = bb.array();
  63             ck(ByteBuffer.wrap(array, LENGTH/2, LENGTH/2).order(), be);
  64             ck(ByteBuffer.wrap(array).order(), be);
  65             ck(bb.asReadOnlyBuffer().order(), be);
  66             ck(bb.duplicate().order(), be);
  67             ck(bb.slice().order(), be);
  68         }
  69     }
  70 
  71     public static void main(String args[]) throws Exception {
  72 
  73         ck(ByteBuffer.allocate(LENGTH).order(), be);
  74         ck(ByteBuffer.allocateDirect(LENGTH).order(), be);
  75         ck(ByteBuffer.allocate(LENGTH).order(be).order(), be);
  76         ck(ByteBuffer.allocate(LENGTH).order(le).order(), le);
  77         ck(ByteBuffer.allocateDirect(LENGTH).order(be).order(), be);
  78         ck(ByteBuffer.allocateDirect(LENGTH).order(le).order(), le);
  79 
  80         ckByteBuffer(ByteBuffer.allocate(LENGTH));
  81         ckByteBuffer(ByteBuffer.allocateDirect(LENGTH));
  82 
  83         OrderChar.ckCharBuffer();
  84         OrderShort.ckShortBuffer();
  85         OrderInt.ckIntBuffer();
  86         OrderLong.ckLongBuffer();
  87         OrderFloat.ckFloatBuffer();
  88         OrderDouble.ckDoubleBuffer();
  89     }
  90 }