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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  package org.apache.directory.mavibot.btree.serializer;
21  
22  
23  import static org.junit.Assert.assertEquals;
24  
25  import java.io.IOException;
26  
27  import org.apache.directory.mavibot.btree.serializer.BufferHandler;
28  import org.apache.directory.mavibot.btree.serializer.IntSerializer;
29  import org.junit.Test;
30  
31  
32  /**
33   * Test the IntSerializer class
34   * 
35   * @author <a href="mailto:labs@labs.apache.org">Mavibot labs Project</a>
36   */
37  public class IntSerializerTest
38  {
39      private static IntSerializer serializer = new IntSerializer();
40  
41  
42      @Test
43      public void testIntSerializer() throws IOException
44      {
45          int value = 0x00000000;
46          byte[] result = serializer.serialize( value );
47  
48          assertEquals( ( byte ) 0x00, result[3] );
49          assertEquals( ( byte ) 0x00, result[2] );
50          assertEquals( ( byte ) 0x00, result[1] );
51          assertEquals( ( byte ) 0x00, result[0] );
52  
53          assertEquals( value, serializer.deserialize( new BufferHandler( result ) ).intValue() );
54  
55          // ------------------------------------------------------------------
56          value = 0x00000001;
57          result = serializer.serialize( value );
58  
59          assertEquals( ( byte ) 0x01, result[3] );
60          assertEquals( ( byte ) 0x00, result[2] );
61          assertEquals( ( byte ) 0x00, result[1] );
62          assertEquals( ( byte ) 0x00, result[0] );
63  
64          assertEquals( value, serializer.deserialize( new BufferHandler( result ) ).intValue() );
65  
66          // ------------------------------------------------------------------
67          value = 0x000000FF;
68          result = serializer.serialize( value );
69  
70          assertEquals( ( byte ) 0xFF, result[3] );
71          assertEquals( ( byte ) 0x00, result[2] );
72          assertEquals( ( byte ) 0x00, result[1] );
73          assertEquals( ( byte ) 0x00, result[0] );
74  
75          assertEquals( value, serializer.deserialize( new BufferHandler( result ) ).intValue() );
76  
77          // ------------------------------------------------------------------
78          value = 0x00000100;
79          result = serializer.serialize( value );
80  
81          assertEquals( ( byte ) 0x00, result[3] );
82          assertEquals( ( byte ) 0x01, result[2] );
83          assertEquals( ( byte ) 0x00, result[1] );
84          assertEquals( ( byte ) 0x00, result[0] );
85  
86          assertEquals( value, serializer.deserialize( new BufferHandler( result ) ).intValue() );
87  
88          // ------------------------------------------------------------------
89          value = 0x0000FFFF;
90          result = serializer.serialize( value );
91  
92          assertEquals( ( byte ) 0xFF, result[3] );
93          assertEquals( ( byte ) 0xFF, result[2] );
94          assertEquals( ( byte ) 0x00, result[1] );
95          assertEquals( ( byte ) 0x00, result[0] );
96  
97          assertEquals( value, serializer.deserialize( new BufferHandler( result ) ).intValue() );
98  
99          // ------------------------------------------------------------------
100         value = 0x00010000;
101         result = serializer.serialize( value );
102 
103         assertEquals( ( byte ) 0x00, result[3] );
104         assertEquals( ( byte ) 0x00, result[2] );
105         assertEquals( ( byte ) 0x01, result[1] );
106         assertEquals( ( byte ) 0x00, result[0] );
107 
108         assertEquals( value, serializer.deserialize( new BufferHandler( result ) ).intValue() );
109 
110         // ------------------------------------------------------------------
111         value = 0x00FFFFFF;
112         result = serializer.serialize( value );
113 
114         assertEquals( ( byte ) 0xFF, result[3] );
115         assertEquals( ( byte ) 0xFF, result[2] );
116         assertEquals( ( byte ) 0xFF, result[1] );
117         assertEquals( ( byte ) 0x00, result[0] );
118 
119         assertEquals( value, serializer.deserialize( new BufferHandler( result ) ).intValue() );
120 
121         // ------------------------------------------------------------------
122         value = 0x01000000;
123         result = serializer.serialize( value );
124 
125         assertEquals( ( byte ) 0x00, result[3] );
126         assertEquals( ( byte ) 0x00, result[2] );
127         assertEquals( ( byte ) 0x00, result[1] );
128         assertEquals( ( byte ) 0x01, result[0] );
129 
130         assertEquals( value, serializer.deserialize( new BufferHandler( result ) ).intValue() );
131 
132         // ------------------------------------------------------------------
133         value = 0x7FFFFFFF;
134         result = serializer.serialize( value );
135 
136         assertEquals( ( byte ) 0x00FF, result[3] );
137         assertEquals( ( byte ) 0x00FF, result[2] );
138         assertEquals( ( byte ) 0x00FF, result[1] );
139         assertEquals( ( byte ) 0x7F, result[0] );
140 
141         assertEquals( value, serializer.deserialize( new BufferHandler( result ) ).intValue() );
142 
143         // ------------------------------------------------------------------
144         value = 0x80000000;
145         result = serializer.serialize( value );
146 
147         assertEquals( ( byte ) 0x00, result[3] );
148         assertEquals( ( byte ) 0x00, result[2] );
149         assertEquals( ( byte ) 0x00, result[1] );
150         assertEquals( ( byte ) 0x80, result[0] );
151 
152         assertEquals( value, serializer.deserialize( new BufferHandler( result ) ).intValue() );
153 
154         // ------------------------------------------------------------------
155         value = 0xFFFFFFFF;
156         result = serializer.serialize( value );
157 
158         assertEquals( ( byte ) 0xFF, result[3] );
159         assertEquals( ( byte ) 0xFF, result[2] );
160         assertEquals( ( byte ) 0xFF, result[1] );
161         assertEquals( ( byte ) 0xFF, result[0] );
162 
163         assertEquals( value, serializer.deserialize( new BufferHandler( result ) ).intValue() );
164     }
165 }