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AcuniaBitSetTest.java

/* Copyright (C) 2001 ACUNIA

   This file is part of Mauve.

   Mauve is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   Mauve 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with Mauve; see the file COPYING.  If not, write to
   the Free Software Foundation, 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.
*/

// Tags: JDK1.2

package gnu.testlet.java.util.BitSet;
import gnu.testlet.Testlet;
import gnu.testlet.TestHarness;
import java.util.*;

/**
*  Written by ACUNIA.   <br>
*  <br>
*  this file contains test for java.util.BitSet <br>
*
*/
00034 public class AcuniaBitSetTest implements Testlet
{
  protected TestHarness th;

  public void test (TestHarness harness)
    {
       th = harness;
       test_BitSet();
       test_clone();
       test_equals();
       test_hashCode();
       test_toString();
       test_and();
       test_andNot();
       test_clear();
       test_get();
       test_or();
       test_set();
       test_xor();
       test_length();

     }


/**
* implemented.
*
*/
00062   public void test_BitSet(){
    th.checkPoint("BitSet()");
    BitSet bs = new BitSet();
    boolean ok = true;
    for (int i=0; i < 64 ; i++)
    { if (bs.get(i) ) ok =false; }
    th.check(ok ,"all bits should be 0 -- got:"+bs);

    th.checkPoint("BitSet(int)");
    bs = new BitSet(1);
    ok = true;
    for (int i=0; i < 64 ; i++)
    { if (bs.get(i) ) ok =false; }
    th.check(ok ,"all bits should be 0 -- got:"+bs);

    try { new BitSet(-1);
        th.fail("should throw NegativeArraySizeException");
      }
    catch(NegativeArraySizeException ne) {th.check(true); }

  }


/**
* implemented.
*
*/
00089   public void test_clone(){
    th.checkPoint("clone()java.lang.Object");
    BitSet bs = new BitSet(3);
    int i;
    for (i = 0; i < 64 ; i= i+2) { bs.set(i); }
    BitSet bsc = (BitSet) bs.clone();
    boolean ok = true;
    for (i = 0; i < 64 ; i++)
    { if (bsc.get(i) !=  (((i % 2) == 0) ? true : false )) ok = false ;}
    th.check( ok , "all bits should be set" );
    bs = new BitSet(0);
    bsc = (BitSet) bs.clone();
    bs.set(4);
    th.check( bsc.get(4) == false , "changes in the original don't affect the clone");
  }


/**
* implemented.
*
*/
00110   public void test_equals(){
    th.checkPoint("equals(java.lang.Object)boolean");
    BitSet bs = new BitSet(35);
    int i;
    for (i = 0; i < 64 ; i= i+2) { bs.set(i); }
    th.check( ! bs.equals(null) , "returns false if compared to null" );
    th.check( ! bs.equals("dsf") , "returns false if compared to another Object" );
    Vector v = new Vector();
    for (i = 0; i < 64 ; i= i+2) { v.add(new Integer(1)); v.add(new Integer(0));}
    th.check( ! bs.equals(v) , "returns false if compared to a vector" );
    BitSet bsc = (BitSet) bs.clone();
    th.check(bsc.equals(bs) , "a BitSet equals his clone");
    bs.set(1);
    th.check(! bsc.equals(bs) , "one different bit ==> not equal");
    bs.clear(1);
    bsc.clear(100);
    th.check(bsc.equals(bs) , "different size still can be equal -- 1");
    th.check(bs.equals(bsc) , "different size still can be equal -- 2");
    bsc.set(127);
    th.check(!bsc.equals(bs) , "different size don't have to be equal -- 1");
    th.check(!bs.equals(bsc) , "different size don't have to be equal -- 2");

  }


/**
* implemented.    <br>
* the hashCode is only depending on the bits set in the BitSet. <br>
* this means that two equal bitSets (with different size) still have the same <br>
* hashcode
*/
00141   public void test_hashCode(){
    th.checkPoint("hashCode()int");
    BitSet bs = new BitSet(34);
    th.check(bs.hashCode() == 1234 , "checking hashCode for empty BitSet size 64");
    bs = new BitSet(0);
    th.check(bs.hashCode() == 1234 , "checking hashCode for empty BitSet size 0");
    int i;
    for (i=0 ; i < 8 ; i++) {bs.set(i);}
    th.check(bs.hashCode() == 1069 , "checking hashCode for  BitSet  FF");

  }


/**
* implemented.
*
*/
00158   public void test_toString(){
    th.checkPoint("toString()java.lang.String");
    BitSet bs = new BitSet();
    th.check( "{}".equals(bs.toString()) , "check empty BitSet");
    bs.set(1);
    th.check( "{1}".equals(bs.toString()) , "check BitSet string representation -- 1");
    bs.set(60);
    th.check( "{1, 60}".equals(bs.toString()) , "check BitSet string representation -- 1");
    bs.set(15);
    th.check( "{1, 15, 60}".equals(bs.toString()) , "check BitSet string representation -- 1");

  }


/**
* implemented.
*
*/
00176   public void test_and(){
    th.checkPoint("and(java.util.BitSet)void");
    BitSet bs1 = new BitSet();
    BitSet bs2 = new BitSet();
    int i;
    for (i=0 ; i < 64 ; i++ ) { bs2.set(i); }
    try { bs1.and(null);
        th.fail("Should throw a NullPointerException");
        }
    catch( NullPointerException ne) { th.check(true); }
    bs2.and(bs1);
    th.check( bs1.equals(bs2) , "all ones anded to zeros give zeros");
    bs1.set(1); bs2.set(1);
    bs1.and(bs2);
    th.check( bs1.get(1) && bs2.equals(bs1), "checking and -- 1");
    for (i=0 ; i < 64 ; i++ ) { bs2.set(i); bs1.set(i);}
    for (i=64 ; i < 128 ; i++ ) { bs2.set(i); }
    bs1.clear(2); bs1.clear(20) ;bs1.clear(25); bs1.clear(28);
    Object o = bs1.clone();
    bs1.and(bs2);
    th.check(bs1.equals(o) , "extra bits from bs2 are unused");
    bs2.and(bs1);
    th.check(bs1.equals(bs2) , "extra bits in bs2 are cleared");        
  }


/**
* implemented.    <br>
* --> since JDK 1.2
*/
00206   public void test_andNot(){
    th.checkPoint("andNot(java.util.BitSet)void");
    BitSet bs1 = new BitSet();
    BitSet bs2 = new BitSet();
    int i;
    for (i=0 ; i < 64 ; i++ ) { bs2.set(i); }
    try { bs1.and(null);
        th.fail("Should throw a NullPointerException");
        }
    catch( NullPointerException ne) { th.check(true); }
    BitSet bs3 = (BitSet) bs2.clone();
    bs2.andNot(bs1);
    th.check( bs3.equals(bs2) , "all ones andnotted to zeros give ones");
    bs3.andNot(bs2);
    th.check( !bs3.get(1) && bs3.equals(bs1), "checking andNot -- 1");
    for (i=0 ; i < 64 ; i++ ) { bs2.set(i); bs1.set(i);}
    for (i=64 ; i < 128 ; i++ ) { bs2.set(i); }
    BitSet bs4 = (BitSet)bs2.clone();
    bs3 = (BitSet)bs1.clone();
    bs4.xor(bs1);
    bs1.andNot(bs2);
    th.check(bs1.equals(new BitSet(64)) , "extra bits from bs2 are unused");
    bs2.andNot(bs3);
    th.check(bs4.equals(bs2) , "extra bits in bs2 are not altered");          
    bs1.clear(0); bs2.clear(0);
    bs2.andNot(bs1);
    th.check(!bs2.get(0) , "checking or -- 1");
    bs2.set(0);
    bs2.andNot(bs1);
    th.check(bs2.get(0) , "checking or -- 2");
    bs1.set(0);
    bs2.andNot(bs1);
    th.check(!bs2.get(0) , "checking or -- 3");
    bs2.andNot(bs1);
    th.check(!bs2.get(0) , "checking or -- 4");

  }


/**
* implemented.
*
*/
00249   public void test_clear(){
    th.checkPoint("clear(int)void");
    BitSet bs = new BitSet();
    Object o = bs.clone();
    int i;
    for (i=0 ; i < 64 ; i++ ) { bs.set(i); bs.clear(i);}
    th.check(bs.equals(o) , "checking set/clear");
    bs.set(4);
    th.check( bs.get(4) ,"make sure the set worked" );
    bs.clear(4);
    th.check( !bs.get(4) ,"make sure the clear worked -- 1" );
    bs.clear(4);
    th.check( !bs.get(4) ,"make sure the clear worked -- 2" );
    bs.clear(123);
    try { bs.clear(-1);
        th.fail("should throw an IndexsOutOfBoundsException");
        }
    catch(IndexOutOfBoundsException ie) {th.check(true);}

    bs = new BitSet(0);
    try { bs.clear(0);
          bs.clear(64);
          bs.clear(128);
          bs.set(146);
          bs.clear(146);
          th.check(true);
        }
    catch(Exception e) { th.fail("should not throw an exception");}
  }


/**
* implemented.
*
*/
00284   public void test_get(){
    th.checkPoint("get(int)boolean");
    BitSet bs = new BitSet();
    try { bs.get(-1);
        th.fail("should throw an IndexsOutOfBoundsException");
        }
    catch(IndexOutOfBoundsException ie) {th.check(true);}
    th.check(!bs.get(Integer.MAX_VALUE) , "returns false if pos > size");
    bs.set(3);
    th.check(bs.get(3) , "returns true if pos is set");
    bs.clear(3);
    th.check(!bs.get(3) , "returns false if pos is cleared");
    th.check(!bs.get(0) , "returns false if pos is cleared/or not set -- 1");
    th.check(!bs.get(63) , "returns false if pos is cleared/or not set -- 2");
  }


/**
* implemented.
*
*/
00305   public void test_or(){
    th.checkPoint("or(java.util.BitSet)void");
    BitSet bs1 = new BitSet();
    BitSet bs2 = new BitSet();
    int i;
    for (i=0 ; i < 64 ; i++ ) { bs2.set(i); }
    try { bs1.or(null);
        th.fail("Should throw a NullPointerException");
        }
    catch( NullPointerException ne) { th.check(true); }
    bs1.or(bs2);
    th.check( bs1.equals(bs2) , "all ones ored with zeros give ones");
    for (i=64 ; i < 128 ; i++ ) { bs2.set(i); }
    BitSet bs3 = new BitSet(3);
    BitSet bs4 = new BitSet(127);
    bs3.or(bs2);
    th.check(!bs1.equals(bs3) , "extra bits from bs2 are used -- got: "+bs3);
    th.check(bs2.equals(bs3) , "lots of ones ored with nothing gives ones");
    bs4.or(bs1);
    th.check(bs4.equals(bs1) , "extra bits in bs4 are left");
    bs1.clear(0); bs2.clear(0);
    bs2.or(bs1);
    th.check(!bs2.get(0) , "checking or -- 1");
    bs1.set(0);
    bs2.or(bs1);
    th.check(bs2.get(0) , "checking or -- 2");
    bs2.or(bs1);
    th.check(bs2.get(0) , "checking or -- 3");
    bs1.clear(0);
    bs2.or(bs1);
    th.check(bs2.get(0) , "checking or -- 4");
  }


/**
* implemented.    <br>
* is tested together with clear
*/
00343   public void test_set(){
    th.checkPoint("set(int)void");
    BitSet bs = new BitSet(3);
    try { bs.set(-1);
        th.fail("should throw an IndexsOutOfBoundsException");
        }
    catch(IndexOutOfBoundsException ie) {th.check(true);}
    bs = new BitSet(0);
    bs.set(0);
    bs.set(23);
  }


/**
*implemented.
*
*/
00360   public void test_xor(){
    th.checkPoint("xor(java.util.BitSet)void");
    BitSet bs1 = new BitSet();
    BitSet bs2 = new BitSet();
    int i;
    for (i=0 ; i < 32 ; i++ ) { bs2.set(i); }
    try { bs1.xor(null);
        th.fail("Should throw a NullPointerException");
        }
    catch( NullPointerException ne) { th.check(true); }
    bs1.xor(bs2);
    th.check( bs1.equals(bs2) , "checking global xor");
    for (i=64 ; i < 128 ; i++ ) { bs1.set(i); }
    BitSet bs3 = new BitSet(3);
    bs3.xor(bs1);
    th.check(!bs2.equals(bs3) , "extra bits from bs1 are used -- got: "+bs3);
    th.check(bs3.equals(bs1) , "lots of ones xored with nothing gives ones");
    bs1.xor(bs2);
    boolean ok=true;
    for (i=0 ; i < 64 ; i++ ) { if (bs1.get(i)) ok = false; }
    for (i=64 ; i < 128 ; i++ ) { if (!bs1.get(i)) ok = false; }
    if (!ok) th.debug("got wrong bitpattern:"+bs1);
    th.check(ok , "extra bits in bs4 are left");
    bs1.clear(0); bs2.clear(0);
    bs2.xor(bs1);
    th.check(!bs2.get(0) , "checking xor -- 1");
    bs1.set(0);
    bs2.xor(bs1);
    th.check(bs2.get(0) , "checking xor -- 2");
    bs2.xor(bs1);
    th.check(!bs2.get(0) , "checking xor -- 3");
    bs2.xor(bs1);
    th.check(bs2.get(0) , "checking xor -- 4");
    bs1.clear(0);
    bs2.xor(bs1);
    th.check(bs2.get(0) , "checking xor -- 5");

  }


/**
* implemented.    <br>
* --> since jdk 1.2
*/
00404   public void test_length(){
    th.checkPoint("length()void");
    BitSet bs = new BitSet(0);
    th.check(bs.length()==0);
    bs.clear(100);
    th.check(bs.length()==0);
    bs.set(50);   
    th.check(bs.length()==51);
    bs.set(120);
    th.check(bs.length()==121);
    bs.set(150);
    th.check(bs.length()==151);
    bs.set(150);
    th.check(bs.length()==151);
    bs.clear(150);
    th.check(bs.length()==121);
    bs.clear(120);
    th.check(bs.length()==51);
    bs.clear(50);
    th.check(bs.length()==0);

  }


}

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