/**
* 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.test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertTrue;
import org.apache.zookeeper.ZKTestCase;
import org.apache.zookeeper.client.HostProvider;
import org.apache.zookeeper.client.StaticHostProvider;
import org.junit.Test;
import java.net.InetSocketAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
public class StaticHostProviderTest extends ZKTestCase {
@Test
public void testNextGoesRound() throws UnknownHostException {
HostProvider hostProvider = getHostProvider(2);
InetSocketAddress first = hostProvider.next(0);
assertTrue(first instanceof InetSocketAddress);
hostProvider.next(0);
assertEquals(first, hostProvider.next(0));
}
@Test
public void testNextGoesRoundAndSleeps() throws UnknownHostException {
int size = 2;
HostProvider hostProvider = getHostProvider(size);
while (size > 0) {
hostProvider.next(0);
--size;
}
long start = System.currentTimeMillis();
hostProvider.next(1000);
long stop = System.currentTimeMillis();
assertTrue(900 <= stop - start);
}
@Test
public void testNextDoesNotSleepForZero() throws UnknownHostException {
int size = 2;
HostProvider hostProvider = getHostProvider(size);
while (size > 0) {
hostProvider.next(0);
--size;
}
long start = System.currentTimeMillis();
hostProvider.next(0);
long stop = System.currentTimeMillis();
assertTrue(5 > stop - start);
}
@Test
public void testTwoConsequitiveCallsToNextReturnDifferentElement()
throws UnknownHostException {
HostProvider hostProvider = getHostProvider(2);
assertNotSame(hostProvider.next(0), hostProvider.next(0));
}
@Test
public void testOnConnectDoesNotReset() throws UnknownHostException {
HostProvider hostProvider = getHostProvider(2);
InetSocketAddress first = hostProvider.next(0);
hostProvider.onConnected();
InetSocketAddress second = hostProvider.next(0);
assertNotSame(first, second);
}
private StaticHostProvider getHostProvider(int size)
throws UnknownHostException {
ArrayList<InetSocketAddress> list = new ArrayList<InetSocketAddress>(
size);
while (size > 0) {
list.add(new InetSocketAddress("10.10.10." + size, 1234));
--size;
}
return new StaticHostProvider(list);
}
}