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/*
* 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.zookeeper.server;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
import java.util.Map;
import java.util.Set;
import org.apache.zookeeper.ZKTestCase;
import org.apache.zookeeper.data.StatPersisted;
import org.apache.zookeeper.server.util.DigestCalculator;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class NodeHashMapImplTest extends ZKTestCase {
@Before
public void setUp() {
DigestCalculator.setDigestEnabled(true);
}
@After
public void tearDown() {
DigestCalculator.setDigestEnabled(false);
}
/**
* Test all the operations supported in NodeHashMapImpl.
*/
@Test
public void testOperations() {
NodeHashMapImpl nodes = new NodeHashMapImpl();
assertEquals(0, nodes.size());
assertEquals(0L, nodes.getDigest());
// add a new node
String p1 = "p1";
DataNode n1 = new DataNode(p1.getBytes(), 0L, new StatPersisted());
nodes.put(p1, n1);
assertEquals(n1, nodes.get(p1));
assertNotEquals(0L, nodes.getDigest());
assertEquals(1, nodes.size());
// put another node
String p2 = "p2";
nodes.put(p2, new DataNode(p2.getBytes(), 0L, new StatPersisted()));
Set<Map.Entry<String, DataNode>> entries = nodes.entrySet();
assertEquals(2, entries.size());
// remove a node
nodes.remove(p1);
assertEquals(1, nodes.size());
nodes.remove(p2);
assertEquals(0, nodes.size());
assertEquals(0L, nodes.getDigest());
// test preChange and postChange
String p3 = "p3";
DataNode n3 = new DataNode(p3.getBytes(), 0L, new StatPersisted());
nodes.put(p3, n3);
long preChangeDigest = nodes.getDigest();
assertNotEquals(0L, preChangeDigest);
nodes.preChange(p3, n3);
assertEquals(0L, nodes.getDigest());
n3.stat.setMzxid(1);
n3.stat.setMtime(1);
n3.stat.setVersion(1);
nodes.postChange(p3, n3);
long postChangeDigest = nodes.getDigest();
assertNotEquals(0, postChangeDigest);
assertNotEquals(preChangeDigest, postChangeDigest);
}
}
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