/*
 *  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.server.core.referral;


import javax.naming.NamingException;

import junit.framework.TestCase;

import org.apache.directory.shared.ldap.name.LdapDN;


/**
 * Unit tests for ReferralLut.
 * 
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 * @version $Rev$
 */
public class ReferralLutTest extends TestCase
{
    public void testNullLimits()
    {
        ReferralLut lut = new ReferralLut();
        try
        {
            lut.isReferral( ( String ) null );
            fail( "can't get here" );
        }
        catch ( IllegalArgumentException e )
        {
        }
        try
        {
            lut.isReferral( ( LdapDN ) null );
            fail( "can't get here" );
        }
        catch ( IllegalArgumentException e )
        {
        }
        try
        {
            lut.getFarthestReferralAncestor( ( LdapDN ) null );
            fail( "can't get here" );
        }
        catch ( IllegalArgumentException e )
        {
        }
        try
        {
            lut.getNearestReferralAncestor( ( LdapDN ) null );
            fail( "can't get here" );
        }
        catch ( IllegalArgumentException e )
        {
        }
        try
        {
            lut.referralAdded( ( LdapDN ) null );
            fail( "can't get here" );
        }
        catch ( IllegalArgumentException e )
        {
        }
        try
        {
            lut.referralAdded( ( String ) null );
            fail( "can't get here" );
        }
        catch ( IllegalArgumentException e )
        {
        }
        try
        {
            lut.referralDeleted( ( LdapDN ) null );
            fail( "can't get here" );
        }
        catch ( IllegalArgumentException e )
        {
        }
        try
        {
            lut.referralDeleted( ( String ) null );
            fail( "can't get here" );
        }
        catch ( IllegalArgumentException e )
        {
        }
        try
        {
            lut.referralChanged( ( LdapDN ) null, ( LdapDN ) null );
            fail( "can't get here" );
        }
        catch ( IllegalArgumentException e )
        {
        }
        try
        {
            lut.referralChanged( ( String ) null, ( String ) null );
            fail( "can't get here" );
        }
        catch ( IllegalArgumentException e )
        {
        }
        try
        {
            lut.referralChanged( ( LdapDN ) null, ( String ) null );
            fail( "can't get here" );
        }
        catch ( IllegalArgumentException e )
        {
        }
        try
        {
            lut.referralChanged( ( String ) null, ( LdapDN ) null );
            fail( "can't get here" );
        }
        catch ( IllegalArgumentException e )
        {
        }
    }


    public void testUpdateOperations() throws NamingException
    {
        String dn = "ou=users,ou=system";
        LdapDN name = new LdapDN( dn );
        ReferralLut lut = new ReferralLut();

        // some add delete tests
        assertFalse( lut.isReferral( dn ) );
        lut.referralAdded( dn );
        assertTrue( lut.isReferral( dn ) );
        lut.referralDeleted( dn );
        assertFalse( lut.isReferral( dn ) );

        assertFalse( lut.isReferral( name ) );
        lut.referralAdded( name );
        assertTrue( lut.isReferral( name ) );
        lut.referralDeleted( name );
        assertFalse( lut.isReferral( name ) );

        assertFalse( lut.isReferral( name ) );
        lut.referralAdded( dn );
        assertTrue( lut.isReferral( name ) );
        lut.referralDeleted( name );
        assertFalse( lut.isReferral( name ) );

        assertFalse( lut.isReferral( dn ) );
        lut.referralAdded( name );
        assertTrue( lut.isReferral( dn ) );
        lut.referralDeleted( dn );
        assertFalse( lut.isReferral( dn ) );

        assertFalse( lut.isReferral( name ) );
        lut.referralAdded( dn );
        assertTrue( lut.isReferral( name ) );
        lut.referralDeleted( dn );
        assertFalse( lut.isReferral( name ) );

        assertFalse( lut.isReferral( dn ) );
        lut.referralAdded( name );
        assertTrue( lut.isReferral( dn ) );
        lut.referralDeleted( name );
        assertFalse( lut.isReferral( dn ) );

        // change (rename and move) tests
        String newDn = "ou=people,ou=system";
        LdapDN newName = new LdapDN( newDn );

        assertFalse( lut.isReferral( dn ) );
        lut.referralAdded( dn );
        assertTrue( lut.isReferral( dn ) );
        lut.referralChanged( dn, newDn );
        assertFalse( lut.isReferral( dn ) );
        assertTrue( lut.isReferral( newDn ) );
        lut.referralDeleted( dn );

        assertFalse( lut.isReferral( name ) );
        lut.referralAdded( name );
        assertTrue( lut.isReferral( name ) );
        lut.referralChanged( name, newName );
        assertFalse( lut.isReferral( name ) );
        assertTrue( lut.isReferral( newName ) );
        lut.referralDeleted( name );

        assertFalse( lut.isReferral( dn ) );
        lut.referralAdded( dn );
        assertTrue( lut.isReferral( dn ) );
        lut.referralChanged( dn, newName );
        assertFalse( lut.isReferral( dn ) );
        assertTrue( lut.isReferral( newDn ) );
        lut.referralDeleted( dn );

        assertFalse( lut.isReferral( dn ) );
        lut.referralAdded( dn );
        assertTrue( lut.isReferral( dn ) );
        lut.referralChanged( name, newDn );
        assertFalse( lut.isReferral( dn ) );
        assertTrue( lut.isReferral( newDn ) );
        lut.referralDeleted( dn );
    }


    public void testReferralAncestors() throws NamingException
    {
        LdapDN ancestor = new LdapDN( "ou=users,ou=system" );
        LdapDN farthest = new LdapDN( "ou=system" );
        LdapDN nearest = new LdapDN( "ou=apache,ou=users,ou=system" );
        LdapDN testDn = new LdapDN( "cn=Alex Karasulu,ou=apache,ou=users,ou=system" );
        ReferralLut lut = new ReferralLut();
        assertNull( lut.getNearestReferralAncestor( testDn ) );
        assertNull( lut.getFarthestReferralAncestor( testDn ) );
        lut.referralAdded( testDn );
        assertNull( lut.getNearestReferralAncestor( testDn ) );
        assertNull( lut.getFarthestReferralAncestor( testDn ) );
        lut.referralDeleted( testDn );
        lut.referralAdded( ancestor );
        assertEquals( ancestor, lut.getNearestReferralAncestor( testDn ) );
        assertEquals( ancestor, lut.getFarthestReferralAncestor( testDn ) );
        lut.referralAdded( testDn );
        assertEquals( ancestor, lut.getNearestReferralAncestor( testDn ) );
        assertEquals( ancestor, lut.getFarthestReferralAncestor( testDn ) );
        lut.referralAdded( nearest );
        assertEquals( nearest, lut.getNearestReferralAncestor( testDn ) );
        assertEquals( ancestor, lut.getFarthestReferralAncestor( testDn ) );
        lut.referralAdded( farthest );
        assertEquals( nearest, lut.getNearestReferralAncestor( testDn ) );
        assertEquals( farthest, lut.getFarthestReferralAncestor( testDn ) );
    }
}