[jboss-cvs] jbossretro/src/test/org/jboss/test/lang ...

[Elias Ross]

  User: genman  
  Date: 07/01/24 18:26:42

  Added:       src/test/org/jboss/test/lang  NumberTestCase.java
  Log:
  JBAOP-351 - Retro compiler support for Integer bit methods
  
  Revision  Changes    Path
  1.1      date: 2007/01/24 23:26:42;  author: genman;  state: Exp;jbossretro/src/test/org/jboss/test/lang/NumberTestCase.java
  
  Index: NumberTestCase.java
  ===================================================================
  /*
   * JBoss, Home of Professional Open Source
   * Copyright 2005, JBoss Inc., and individual contributors as indicated
   * by the @authors tag. See the copyright.txt in the distribution for a
   * full listing of individual contributors.
   *
   * This is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as
   * published by the Free Software Foundation; either version 2.1 of
   * the License, or (at your option) any later version.
   *
   * This software is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this software; if not, write to the Free
   * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
   * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
   */
  
  package org.jboss.test.lang;
  
  import junit.framework.TestCase;
  
  public class NumberTestCase extends TestCase
  {
     public void testBits()
     {
        int i = 0x0ff;
        long l = 0x0ff;
        assertEquals(8, Integer.bitCount(i));
        assertEquals(8, Long.bitCount(l));
  
        assertEquals(2, Integer.lowestOneBit(0xe));
        assertEquals(2, Long.lowestOneBit(0xe));
  
        assertEquals(0x80, Integer.highestOneBit(i));
        assertEquals(0x80, Long.highestOneBit(l));
  
        assertEquals(-16777216, Integer.reverse(i));
        assertEquals(-72057594037927936L, Long.reverse(i));
  
        assertEquals(24, Integer.numberOfLeadingZeros(i));
        assertEquals(24 + 32, Long.numberOfLeadingZeros(i));
  
        assertEquals(0xff0, Integer.rotateLeft(i, 4));
        assertEquals(0xff0, Long.rotateLeft(i, 4));
  
        assertEquals(0xF000000F, Integer.rotateRight(i, 4));
        assertEquals(0xF00000000000000FL, Long.rotateRight(i, 4));
  
        assertEquals(1, Integer.signum(i));
        assertEquals(1, Long.signum(i));
        assertEquals(-1, Integer.signum(-4));
        assertEquals(-1, Long.signum(-2));
  
        assertEquals(0xff000000, Integer.reverseBytes(i));
        assertEquals(0xff00000000000000L, Long.reverseBytes(i));
     }
  }