1   /*
2    * Copyright 2010 The Apache Software Foundation
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  
21  package org.apache.hadoop.hbase.util;
22  
23  import org.apache.hadoop.hbase.io.hfile.Compression;
24  import org.junit.Test;
25  
26  import java.io.IOException;
27  
28  import static org.junit.Assert.*;
29  
30  public class TestCompressionTest {
31  
32    @Test
33    public void testTestCompression() {
34  
35      // This test will fail if you run the tests with LZO compression available.
36      try {
37        CompressionTest.testCompression(Compression.Algorithm.LZO);
38        fail(); // always throws
39      } catch (IOException e) {
40        // there should be a 'cause'.
41        assertNotNull(e.getCause());
42      }
43  
44      // this is testing the caching of the test results.
45      try {
46        CompressionTest.testCompression(Compression.Algorithm.LZO);
47        fail(); // always throws
48      } catch (IOException e) {
49        // there should be NO cause because it's a direct exception not wrapped
50        assertNull(e.getCause());
51      }
52  
53  
54      assertFalse(CompressionTest.testCompression("LZO"));
55      assertTrue(CompressionTest.testCompression("NONE"));
56      assertTrue(CompressionTest.testCompression("GZ"));
57    }
58  }