/*
    *
    * The DbUnit Database Testing Framework
    * Copyright (C)2005, DbUnit.org
    *
    * This library 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 library 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 library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   *
   */
  package org.dbunit.util;
  
  import java.util.HashSet;
  import java.util.Iterator;
  import java.util.Set;
  import java.util.TreeSet;
  
  import org.apache.commons.collections.set.ListOrderedSet;
  
  import junit.framework.TestCase;
  
  /**
   * @author Felipe Leme (dbunit@felipeal.net)
   * @version $Revision: 769 $
   * @since Nov 5, 2005
   * 
   */
  public class CollectionsHelperTest extends TestCase {
    
    public static final String A = "A";
    public static final String B = "B";
    public static final String C = "C";
    
    public CollectionsHelperTest( String testName ) {
      super( testName );
    }
    
    public void testObjectsToSetNullEntry() {
      Set output = CollectionsHelper.objectsToSet( null );
      assertNull( "set should be null", output );
    }
    
    public void testObjectsToSetEmptyEntry() {
      Set output = CollectionsHelper.objectsToSet( new Object[0] );
      assertNotNull( "set should not be null", output );
      assertEquals( "set should be empty", 0, output.size() );
    }
  
    public void testObjectsToSetSingleInput() {
      Object[] input = { A };
      Set output = CollectionsHelper.objectsToSet( input );
      assertNotNull( "set should not be null", output );
      Iterator i = output.iterator();
      assertTrue( "iterator is empty", i.hasNext() );
      assertEquals( "element 0 match", A, i.next() );
      assertFalse( "iterator is not empty", i.hasNext() );
    }
    
    public void testObjectsToSetSequence() {
      Object[] input = { A, C, B };
      Set output = CollectionsHelper.objectsToSet( input );
      assertNotNull( "set should not be null", output );
      Iterator i = output.iterator();
      assertTrue( "iterator is empty", i.hasNext() );
      assertEquals( "element 0 match", A, i.next() );
      assertEquals( "element 1 match", C, i.next() );
      assertEquals( "element 2 match", B, i.next() );
      assertFalse( "iterator is not empty", i.hasNext() );
    }
    
    public void testSetToObjectsNullEntry() {
      Object[] output = CollectionsHelper.setToObjects( null );
      assertNull( "array should be null", output );
    }
    
    public void testSetToObjectsEmptyEntry() {
      Set input = new HashSet();
      Object[] output = CollectionsHelper.setToObjects( input );    
      assertNotNull( "array should not be null", output );
      assertEquals( "array should be empty", 0, output.length );
    }
  
    public void testSetToObjectsSingle() {
      Set input = new HashSet();
      input.add( A );
      Object[] output = CollectionsHelper.setToObjects( input );    
      assertNotNull( "array should not be null", output );
      assertEquals( "array size does not match", 1, output.length );
      assertEquals( "element 0 does not match", A, output[0] );
   }
 
   public void testSetToObjectsOrderedSet() {
     Set input = new TreeSet();
     input.add( A );
     input.add( C );
     input.add( B );
     Object[] output = CollectionsHelper.setToObjects( input );    
     assertNotNull( "array should not be null", output );
     assertEquals( "array size does not match", 3, output.length );
     assertEquals( "element 0 does not match", A, output[0] );
     assertEquals( "element 1 does not match", B, output[1] );
     assertEquals( "element 2 does not match", C, output[2] );
   }
 
   public void testSetToObjectsSequencialSet() {
     Set input = new ListOrderedSet();
     input.add( A );
     input.add( C );
     input.add( B );
     Object[] output = CollectionsHelper.setToObjects( input );    
     assertNotNull( "array should not be null", output );
     assertEquals( "array size does not match", 3, output.length );
     assertEquals( "element 0 does not match", A, output[0] );
     assertEquals( "element 1 does not match", C, output[1] );
     assertEquals( "element 2 does not match", B, output[2] );
   }
   
   public void testSetToStringsNullEntry() {
     Object[] output = CollectionsHelper.setToStrings( null );
     assertNull( "array should be null", output );
   }
   
   public void testSetToStringsEmptyEntry() {
     Set input = new HashSet();
     Object[] output = CollectionsHelper.setToStrings( input );    
     assertNotNull( "array should not be null", output );
     assertEquals( "array should be empty", 0, output.length );
   }
 
   public void testSetToStringsSingle() {
     Set input = new HashSet();
     input.add( A );
     String[] output = CollectionsHelper.setToStrings( input );    
     assertNotNull( "array should not be null", output );
     assertEquals( "array size does not match", 1, output.length );
     assertEquals( "element 0 does not match", A, output[0] );
   }
 
   public void testSetToStringsOrderedSet() {
     Set input = new TreeSet();
     input.add( A );
     input.add( C );
     input.add( B );
     String[] output = CollectionsHelper.setToStrings( input );    
     assertNotNull( "array should not be null", output );
     assertEquals( "array size does not match", 3, output.length );
     assertEquals( "element 0 does not match", A, output[0] );
     assertEquals( "element 1 does not match", B, output[1] );
     assertEquals( "element 2 does not match", C, output[2] );
   }
 
   public void testSetToStringsSequencialSet() {
     Set input = new ListOrderedSet();
     input.add( A );
     input.add( C );
     input.add( B );
     String[] output = CollectionsHelper.setToStrings( input );    
     assertNotNull( "array should not be null", output );
     assertEquals( "array size does not match", 3, output.length );
     assertEquals( "element 0 does not match", A, output[0] );
     assertEquals( "element 1 does not match", C, output[1] );
     assertEquals( "element 2 does not match", B, output[2] );
   }
 
 
 }