/*
* (C) 2007-2012 Alibaba Group Holding Limited.
*
* Licensed 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.
* Authors:
* wuhua <wq163@163.com> , boyan <killme2008@gmail.com>
*/
package com.taobao.metamorphosis.client.producer;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import java.util.ArrayList;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import com.taobao.metamorphosis.cluster.Partition;
import com.taobao.metamorphosis.exception.MetaClientException;
public class RoundRobinPartitionSelectorUnitTest {
private RoundRobinPartitionSelector selector;
@Before
public void setUp() {
this.selector = new RoundRobinPartitionSelector();
}
@Test(expected = MetaClientException.class)
public void testSelect_EmptyList() throws Exception {
assertNull(this.selector.getPartition("test", null, null));
}
@Test
public void testSelectRoundRobin() throws Exception {
final Partition p1 = new Partition("0-1");
final Partition p2 = new Partition("0-2");
final Partition p3 = new Partition("0-3");
final List<Partition> list = new ArrayList<Partition>();
list.add(p1);
list.add(p2);
list.add(p3);
assertSame(p2, this.selector.getPartition("test", list, null));
assertSame(p3, this.selector.getPartition("test", list, null));
assertSame(p1, this.selector.getPartition("test", list, null));
assertSame(p2, this.selector.getPartition("test", list, null));
assertSame(p3, this.selector.getPartition("test", list, null));
assertSame(p1, this.selector.getPartition("test", list, null));
}
}