/***********************************************************************************************************************
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* 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.
**********************************************************************************************************************/
package eu.stratosphere.runtime.io;
import static org.junit.Assert.assertEquals;
import eu.stratosphere.runtime.io.api.RoundRobinChannelSelector;
import org.junit.Test;
import eu.stratosphere.core.io.StringRecord;
/**
* This class checks the functionality of the {@link RoundRobinChannelSelector} class.
*
*/
public class DefaultChannelSelectorTest {
/**
* This test checks the channel selection
*/
@Test
public void channelSelect() {
final StringRecord dummyRecord = new StringRecord("abc");
final RoundRobinChannelSelector<StringRecord> selector = new RoundRobinChannelSelector<StringRecord>();
// Test with two channels
final int numberOfOutputChannels = 2;
int[] selectedChannels = selector.selectChannels(dummyRecord, numberOfOutputChannels);
assertEquals(1, selectedChannels.length);
assertEquals(1, selectedChannels[0]);
selectedChannels = selector.selectChannels(dummyRecord, numberOfOutputChannels);
assertEquals(1, selectedChannels.length);
assertEquals(0, selectedChannels[0]);
}
}