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  package org.apache.hadoop.hbase.util;
21  
22  import static org.junit.Assert.assertFalse;
23  import static org.junit.Assert.assertTrue;
24  
25  import org.apache.hadoop.hbase.HBaseTestingUtility;
26  import org.apache.hadoop.hdfs.MiniDFSCluster;
27  import org.junit.Test;
28  
29  /**
30   * Test {@link FSUtils}.
31   */
32  public class TestFSUtils {
33    @Test public void testIsHDFS() throws Exception {
34      HBaseTestingUtility htu = new HBaseTestingUtility();
35      htu.getConfiguration().setBoolean("dfs.support.append", false);
36      assertFalse(FSUtils.isHDFS(htu.getConfiguration()));
37      assertFalse(FSUtils.isAppendSupported(htu.getConfiguration()));
38      htu.getConfiguration().setBoolean("dfs.support.append", true);
39      MiniDFSCluster cluster = null;
40      try {
41        cluster = htu.startMiniDFSCluster(1);
42        assertTrue(FSUtils.isHDFS(htu.getConfiguration()));
43        assertTrue(FSUtils.isAppendSupported(htu.getConfiguration()));
44      } finally {
45        if (cluster != null) cluster.shutdown();
46      }
47    }
48  }