/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.directory.api.asn1.util;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import org.apache.directory.api.asn1.DecoderException;
import org.apache.directory.api.asn1.util.Asn1StringUtils;
import org.apache.directory.api.asn1.util.BitString;
import org.junit.Test;
import org.junit.runner.RunWith;
import com.mycila.junit.concurrent.Concurrency;
import com.mycila.junit.concurrent.ConcurrentJunitRunner;
/**
* Test the Bit String primitive
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
@RunWith(ConcurrentJunitRunner.class)
@Concurrency()
public class BitStringTest
{
/**
* Test a null BitString
*/
@Test
public void testBitStringNull()
{
BitString bitString = new BitString( 1 );
bitString.setData( null );
try
{
bitString.getBit( 0 );
fail( "Should not reach this point ..." );
}
catch ( IndexOutOfBoundsException ioobe )
{
assertTrue( true );
}
}
/**
* Test an empty BitString
*/
@Test
public void testBitStringEmpty()
{
BitString bitString = new BitString( 1 );
bitString.setData( new byte[]
{} );
try
{
bitString.getBit( 0 );
fail( "Should not reach this point ..." );
}
catch ( IndexOutOfBoundsException ioobe )
{
assertTrue( true );
}
}
/**
* Test a single bit BitString
*/
@Test
public void testSingleBitBitString() throws DecoderException
{
BitString bitString = new BitString( new byte[]
{ 0x07, ( byte ) 0x80 } );
assertEquals( true, bitString.getBit( 0 ) );
}
/**
* Test a 32 bits BitString
*/
@Test
public void test32BitsBitString() throws DecoderException
{
BitString bitString = new BitString( 32 );
bitString.setData( new byte[]
{ 0x00, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF } );
for ( int i = 0; i < 32; i++ )
{
assertEquals( true, bitString.getBit( i ) );
}
}
/**
* Test a 33 bits BitString
*/
@Test
public void test33BitsBitString() throws DecoderException
{
BitString bitString = new BitString( 33 );
bitString.setData( new byte[]
{ 0x07, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0x80 } );
for ( int i = 0; i < 33; i++ )
{
assertEquals( true, bitString.getBit( i ) );
}
assertEquals( true, bitString.getBit( 32 ) );
}
/**
* Test all bits from 0 to 128 BitString
*/
@Test
public void test0to128BitString() throws DecoderException
{
// bit number 14
BitString bitString14 = new BitString( 14 );
bitString14.setData( new byte[]
{ 0x02, ( byte ) 0xFF, ( byte ) 0xFC } );
for ( int i = 0; i < 14; i++ )
{
assertEquals( true, bitString14.getBit( i ) );
}
// bit number 31
BitString bitString31 = new BitString( 31 );
bitString31.setData( new byte[]
{ 0x01, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFE } );
for ( int i = 0; i < 31; i++ )
{
assertEquals( true, bitString31.getBit( i ) );
}
// bit number 128
BitString bitString128 = new BitString( 128 );
bitString128.setData( new byte[]
{ 0x00, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF,
( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF,
( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF } );
for ( int i = 0; i < 128; i++ )
{
assertEquals( true, bitString128.getBit( i ) );
}
}
@Test
public void testBitStringSet()
{
BitString bitString = new BitString( 32 );
byte[] bytes = new byte[]
{ 0x00, ( byte ) 0xAA, 0x11, ( byte ) 0x88, ( byte ) 0xFE };
int[] bits = new int[]
{
1, 0, 1, 0, 1, 0, 1, 0,
0, 0, 0, 1, 0, 0, 0, 1,
1, 0, 0, 0, 1, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 0
};
for ( int i = 0; i < bits.length; i++ )
{
if ( bits[i] == 1 )
{
bitString.setBit( i );
}
}
assertEquals( Asn1StringUtils.dumpBytes( bytes ), Asn1StringUtils.dumpBytes( bitString.getData() ) );
}
@Test
public void testBitStringSetBit()
{
BitString bitString = new BitString( 32 );
int[] bits = new int[]
{
1, 0, 1, 0, 1, 0, 1, 0,
0, 0, 0, 1, 0, 0, 0, 1,
1, 0, 0, 0, 1, 0, 0, 0, // After modification, will become 8A
1,
1,
1,
1,
1,
1,
1,
0
};
for ( int i = 0; i < bits.length; i++ )
{
if ( bits[i] == 1 )
{
bitString.setBit( i );
}
}
bitString.setBit( 9 );
byte[] bytesModified = new byte[]
{ 0x00, ( byte ) 0xAA, 0x51, ( byte ) 0x88, ( byte ) 0xFE };
assertEquals( Asn1StringUtils.dumpBytes( bytesModified ), Asn1StringUtils.dumpBytes( bitString.getData() ) );
}
@Test
public void testBitStringClearBit()
{
BitString bitString = new BitString( 32 );
int[] bits = new int[]
{
1, 0, 1, 0, 1, 0, 1, 0,
0, 0, 0, 1, 0, 0, 0, 1,
1, 0, 0, 0, 1, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 0
};
for ( int i = 0; i < bits.length; i++ )
{
if ( bits[i] == 1 )
{
bitString.setBit( i );
}
}
bitString.clearBit( 11 );
byte[] bytesModified = new byte[]
{ 0x00, ( byte ) 0xAA, 0x01, ( byte ) 0x88, ( byte ) 0xFE };
assertEquals( Asn1StringUtils.dumpBytes( bytesModified ), Asn1StringUtils.dumpBytes( bitString.getData() ) );
}
}