hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestSimulatedFSDatasetWithMultipleStorages.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.hadoop.hdfs.server.datanode;

import org.junit.Before;
import org.junit.Test;

import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_DATA_DIR_KEY;
import static org.junit.Assert.assertEquals;


/**
 * Test that the {@link SimulatedFSDataset} works correctly when configured
 * with multiple storages.
 */
public class TestSimulatedFSDatasetWithMultipleStorages
    extends TestSimulatedFSDataset {

  public TestSimulatedFSDatasetWithMultipleStorages() {
    super(2);
  }

  @Before
  public void setUp() throws Exception {
    super.setUp();
    conf.set(DFS_DATANODE_DATA_DIR_KEY, "data1,data2");
  }

  @Test
  public void testMultipleStoragesConfigured() {
    SimulatedFSDataset fsDataset = getSimulatedFSDataset();
    assertEquals(2, fsDataset.getStorageReports(bpid).length);
  }

}