org.eclipse.linuxtools.ctf.core.tests/src/org/eclipse/linuxtools/ctf/core/tests/types/IntegerEndiannessTest.java

   1 /*******************************************************************************
   2  * Copyright (c) 2013 École Polytechnique de Montréal, Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Geneviève Bastien - Initial API and implementation
  11  *   Alexandre Montplaisir - Split out in separate class
  12  *******************************************************************************/
  13
  14 package org.eclipse.linuxtools.ctf.core.tests.types;
  15
  16 import static org.junit.Assert.assertEquals;
  17
  18 import java.nio.ByteBuffer;
  19 import java.nio.ByteOrder;
  20
  21 import org.eclipse.linuxtools.ctf.core.event.io.BitBuffer;
  22 import org.eclipse.linuxtools.ctf.core.event.types.Encoding;
  23 import org.eclipse.linuxtools.ctf.core.event.types.IntegerDeclaration;
  24 import org.eclipse.linuxtools.ctf.core.event.types.IntegerDefinition;
  25 import org.junit.Before;
  26 import org.junit.Test;
  27
  28 /**
  29  * Endianness test for {@link IntegerDefinition}.
  30  *
  31  * @author Geneviève Bastien
  32  */
  33 public class IntegerEndiannessTest {
  34
  35     private static String name = "testInt";
  36     private static String clockName = "clock";
  37
  38     private ByteBuffer bb;
  39     private BitBuffer input;
  40
  41     /**
  42      * Set up the bit-buffer to be used
  43      */
  44     @Before
  45     public void setUp() {
  46         bb = java.nio.ByteBuffer.allocateDirect(8);
  47         bb.put((byte) 0xab);
  48         bb.put((byte) 0xcd);
  49         bb.put((byte) 0xef);
  50         bb.put((byte) 0x12);
  51         bb.put((byte) 0x34);
  52         bb.put((byte) 0x56);
  53         bb.put((byte) 0x78);
  54         bb.put((byte) 0x9a);
  55         input = new BitBuffer(bb);
  56     }
  57
  58     /** Read 32-bits BE */
  59     @Test
  60     public void test32BE() {
  61         IntegerDeclaration be = new IntegerDeclaration(32, true, 1, ByteOrder.BIG_ENDIAN, Encoding.NONE, clockName, 8);
  62         IntegerDefinition fixture_be = be.createDefinition(null, name);
  63         fixture_be.read(input);
  64         assertEquals(0xabcdef12, fixture_be.getValue());
  65     }
  66
  67     /** Read 64-bits BE */
  68     @Test
  69     public void test64BE() {
  70         IntegerDeclaration be = new IntegerDeclaration(64, true, 1, ByteOrder.BIG_ENDIAN, Encoding.NONE, clockName, 8);
  71         IntegerDefinition fixture_be = be.createDefinition(null, name);
  72         fixture_be.read(input);
  73         assertEquals(0xabcdef123456789aL, fixture_be.getValue());
  74     }
  75
  76     /** Read 32-bits LE */
  77     @Test
  78     public void test32LE() {
  79         IntegerDeclaration le = new IntegerDeclaration(32, true, 1, ByteOrder.LITTLE_ENDIAN, Encoding.NONE, clockName, 8);
  80         IntegerDefinition fixture_le = le.createDefinition(null, name);
  81         fixture_le.read(input);
  82         assertEquals(0x12efcdab, fixture_le.getValue());
  83     }
  84
  85     /** Read 64-bits LE */
  86     @Test
  87     public void test64LE() {
  88         IntegerDeclaration le = new IntegerDeclaration(64, true, 1, ByteOrder.LITTLE_ENDIAN, Encoding.NONE, clockName, 8);
  89         IntegerDefinition fixture_le = le.createDefinition(null, name);
  90         fixture_le.read(input);
  91         assertEquals(0x9a78563412efcdabL, fixture_le.getValue());
  92     }
  93 }