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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, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  package org.apache.hadoop.chukwa;
19  
20  
21  import java.io.IOException;
22  import junit.framework.TestCase;
23  import org.apache.hadoop.io.DataInputBuffer;
24  import org.apache.hadoop.io.DataOutputBuffer;
25  
26  public class ChunkImplTest extends TestCase {
27    public void testVersion() {
28      ChunkBuilder cb = new ChunkBuilder();
29      cb.addRecord("foo".getBytes());
30      cb.addRecord("bar".getBytes());
31      cb.addRecord("baz".getBytes());
32      Chunk c = cb.getChunk();
33      DataOutputBuffer ob = new DataOutputBuffer(c.getSerializedSizeEstimate());
34      try {
35        c.write(ob);
36        DataInputBuffer ib = new DataInputBuffer();
37        ib.reset(ob.getData(), c.getSerializedSizeEstimate());
38        int version = ib.readInt();
39        assertEquals(version, ChunkImpl.PROTOCOL_VERSION);
40      } catch (IOException e) {
41        e.printStackTrace();
42        fail("Should nor raise any exception");
43      }
44    }
45  
46    public void testWrongVersion() {
47      ChunkBuilder cb = new ChunkBuilder();
48      cb.addRecord("foo".getBytes());
49      cb.addRecord("bar".getBytes());
50      cb.addRecord("baz".getBytes());
51      Chunk c = cb.getChunk();
52      DataOutputBuffer ob = new DataOutputBuffer(c.getSerializedSizeEstimate());
53      try {
54        c.write(ob);
55        DataInputBuffer ib = new DataInputBuffer();
56        ib.reset(ob.getData(), c.getSerializedSizeEstimate());
57        // change current chunkImpl version
58        ChunkImpl.PROTOCOL_VERSION = ChunkImpl.PROTOCOL_VERSION + 1;
59        ChunkImpl.read(ib);
60        fail("Should have raised an IOexception");
61      } catch (IOException e) {
62        // right behavior, do nothing
63      }
64    }
65    
66    public void testTag() {
67      ChunkBuilder cb = new ChunkBuilder();
68      cb.addRecord("foo".getBytes());
69      cb.addRecord("bar".getBytes());
70      cb.addRecord("baz".getBytes());
71      Chunk c = cb.getChunk();
72      assertNull(c.getTag("foo"));
73      c.addTag("foo=\"bar\"");
74      assertEquals("bar", c.getTag("foo"));
75    }
76  }