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1   /*
2    *   Licensed to the Apache Software Foundation (ASF) under one
3    *   or more contributor license agreements.  See the NOTICE file
4    *   distributed with this work for additional information
5    *   regarding copyright ownership.  The ASF licenses this file
6    *   to you under the Apache License, Version 2.0 (the
7    *   "License"); you may not use this file except in compliance
8    *   with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   *   Unless required by applicable law or agreed to in writing,
13   *   software distributed under the License is distributed on an
14   *   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *   KIND, either express or implied.  See the License for the
16   *   specific language governing permissions and limitations
17   *   under the License.
18   *
19   */
20  
21  package org.apache.directory.mavibot.btree;
22  
23  
24  import java.io.IOException;
25  import java.util.ArrayList;
26  import java.util.List;
27  
28  import org.apache.directory.mavibot.btree.BTree;
29  import org.apache.directory.mavibot.btree.BTreeBuilder;
30  import org.apache.directory.mavibot.btree.Cursor;
31  import org.apache.directory.mavibot.btree.Tuple;
32  import org.apache.directory.mavibot.btree.serializer.IntSerializer;
33  import org.junit.Test;
34  import static org.junit.Assert.*;
35  
36  
37  /**
38   * Test cases for BTreeBuilder.
39   *
40   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
41   */
42  public class BTreeBuilderTest
43  {
44      @Test
45      public void testIntegerTree() throws IOException
46      {
47          List<Tuple<Integer, Integer>> sortedTuple = new ArrayList<Tuple<Integer, Integer>>();
48          for ( int i = 1; i < 8; i++ )
49          {
50              Tuple<Integer, Integer> t = new Tuple<Integer, Integer>( i, i );
51              sortedTuple.add( t );
52          }
53  
54          IntSerializer ser = new IntSerializer();
55          BTreeBuilder<Integer, Integer> bb = new BTreeBuilder<Integer, Integer>( "master", 4, ser, ser );
56  
57          // contains 1, 2, 3, 4, 5, 6, 7
58          BTree btree = bb.build( sortedTuple.iterator() );
59  
60          assertEquals( 1, btree.rootPage.getNbElems() );
61          
62          assertEquals( 7, btree.rootPage.findRightMost().getKey() );
63          
64          assertEquals( 1, btree.rootPage.findLeftMost().getKey() );
65          
66          Cursor<Integer, Integer> cursor = btree.browse();
67          int i = 0;
68          while ( cursor.hasNext() )
69          {
70              Tuple<Integer, Integer> expected = sortedTuple.get( i++ );
71              Tuple<Integer, Integer> actual = cursor.next();
72              assertEquals( expected.getKey(), actual.getKey() );
73              assertEquals( expected.getValue(), actual.getValue() );
74          }
75          
76          cursor.close();
77          btree.close();
78      }
79  
80  }