/**
* 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.fsdataset.impl;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.fail;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.datanode.FinalizedReplica;
import org.junit.Before;
import org.junit.Test;
/**
* Unit test for ReplicasMap class
*/
public class TestReplicaMap {
private final ReplicaMap map = new ReplicaMap(TestReplicaMap.class);
private final String bpid = "BP-TEST";
private final Block block = new Block(1234, 1234, 1234);
@Before
public void setup() {
map.add(bpid, new FinalizedReplica(block, null, null));
}
/**
* Test for ReplicasMap.get(Block) and ReplicasMap.get(long) tests
*/
@Test
public void testGet() {
// Test 1: null argument throws invalid argument exception
try {
map.get(bpid, null);
fail("Expected exception not thrown");
} catch (IllegalArgumentException expected) { }
// Test 2: successful lookup based on block
assertNotNull(map.get(bpid, block));
// Test 3: Lookup failure - generation stamp mismatch
Block b = new Block(block);
b.setGenerationStamp(0);
assertNull(map.get(bpid, b));
// Test 4: Lookup failure - blockID mismatch
b.setGenerationStamp(block.getGenerationStamp());
b.setBlockId(0);
assertNull(map.get(bpid, b));
// Test 5: successful lookup based on block ID
assertNotNull(map.get(bpid, block.getBlockId()));
// Test 6: failed lookup for invalid block ID
assertNull(map.get(bpid, 0));
}
@Test
public void testAdd() {
// Test 1: null argument throws invalid argument exception
try {
map.add(bpid, null);
fail("Expected exception not thrown");
} catch (IllegalArgumentException expected) { }
}
@Test
public void testRemove() {
// Test 1: null argument throws invalid argument exception
try {
map.remove(bpid, null);
fail("Expected exception not thrown");
} catch (IllegalArgumentException expected) { }
// Test 2: remove failure - generation stamp mismatch
Block b = new Block(block);
b.setGenerationStamp(0);
assertNull(map.remove(bpid, b));
// Test 3: remove failure - blockID mismatch
b.setGenerationStamp(block.getGenerationStamp());
b.setBlockId(0);
assertNull(map.remove(bpid, b));
// Test 4: remove success
assertNotNull(map.remove(bpid, block));
// Test 5: remove failure - invalid blockID
assertNull(map.remove(bpid, 0));
// Test 6: remove success
map.add(bpid, new FinalizedReplica(block, null, null));
assertNotNull(map.remove(bpid, block.getBlockId()));
}
}