1 /*
   2  * Copyright (c) 2000, 2020, 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  * @summary Unit test for buffers
  26  * @bug 4413135 4414911 4416536 4416562 4418782 4471053 4472779 4490253 4523725
  27  *      4526177 4463011 4660660 4661219 4663521 4782970 4804304 4938424 5029431
  28  *      5071718 6231529 6221101 6234263 6535542 6591971 6593946 6795561 7190219
  29  *      7199551 8065556 8149469 8230665
  30  * @modules java.base/java.nio:open
  31  *          java.base/jdk.internal.misc
  32  * @author Mark Reinhold
  33  */
  34 
  35 
  36 import java.io.PrintStream;
  37 
  38 import java.nio.Buffer;
  39 import java.nio.ByteBuffer;
  40 import java.nio.CharBuffer;
  41 
  42 
  43 public class Basic {
  44 
  45     static PrintStream out = System.err;
  46 
  47     static long ic(int i) {
  48         int j = i % 54;
  49         return j + 'a' + ((j > 26) ? 128 : 0);
  50     }
  51 
  52     static String toString(Buffer b) {
  53         return (b.getClass().getName()
  54                 + "[pos=" + b.position()
  55                 + " lim=" + b.limit()
  56                 + " cap=" + b.capacity()
  57                 + "]");
  58     }
  59 
  60     static void show(int level, Buffer b) {
  61         for (int i = 0; i < level; i++)
  62             out.print("  ");
  63         out.println(toString(b) + " " + Integer.toHexString(b.hashCode()));
  64     }
  65 
  66     static void fail(String s) {
  67         throw new RuntimeException(s);
  68     }
  69 
  70     static void fail(String s, Buffer b) {
  71         throw new RuntimeException(s + ": " + toString(b));
  72     }
  73 
  74     static void fail(String s, Buffer b, Buffer b2) {
  75         throw new RuntimeException(s + ": "
  76                                    + toString(b) + ", " + toString(b2));
  77     }
  78 
  79     static void fail(Buffer b,
  80                      String expected, char expectedChar,
  81                      String got, char gotChar)
  82     {
  83         if (b instanceof ByteBuffer) {
  84             ByteBuffer bb = (ByteBuffer)b;
  85             int n = Math.min(16, bb.limit());
  86             for (int i = 0; i < n; i++)
  87                 out.print(" " + Integer.toHexString(bb.get(i) & 0xff));
  88             out.println();
  89         }
  90         if (b instanceof CharBuffer) {
  91             CharBuffer bb = (CharBuffer)b;
  92             int n = Math.min(16, bb.limit());
  93             for (int i = 0; i < n; i++)
  94                 out.print(" " + Integer.toHexString(bb.get(i) & 0xffff));
  95             out.println();
  96         }
  97         throw new RuntimeException(toString(b)
  98                                    + ": Expected '" + expectedChar + "'=0x"
  99                                    + expected
 100                                    + ", got '" + gotChar + "'=0x"
 101                                    + got);
 102     }
 103 
 104     static void fail(Buffer b, long expected, long got) {
 105         fail(b,
 106              Long.toHexString(expected), (char)expected,
 107              Long.toHexString(got), (char)got);
 108     }
 109 
 110     static void ck(Buffer b, boolean cond) {
 111         if (!cond)
 112             fail("Condition failed", b);
 113     }
 114 
 115     static void ck(Buffer b, long got, long expected) {
 116         if (expected != got)
 117             fail(b, expected, got);
 118     }
 119 
 120     static void ck(Buffer b, float got, float expected) {
 121         if (expected != got)
 122             fail(b,
 123                  Float.toString(expected), (char)expected,
 124                  Float.toString(got), (char)got);
 125     }
 126 
 127     static void ck(Buffer b, double got, double expected) {
 128         if (expected != got)
 129             fail(b,
 130                  Double.toString(expected), (char)expected,
 131                  Double.toString(got), (char)got);
 132     }
 133 
 134     public static void main(String[] args) {
 135         BasicByte.test();
 136         BasicChar.test();
 137         BasicShort.test();
 138         BasicInt.test();
 139         BasicLong.test();
 140         BasicFloat.test();
 141         BasicDouble.test();
 142     }
 143 
 144 }