/*
* Copyright © 2015 Cask Data, Inc.
*
* 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 co.cask.cdap.data2.dataset2.lib.partitioned;
import co.cask.cdap.api.dataset.lib.PartitionKey;
import co.cask.cdap.api.dataset.lib.partitioned.ConsumablePartition;
import co.cask.cdap.api.dataset.lib.partitioned.DefaultConsumablePartition;
import org.junit.Assert;
import org.junit.Test;
import java.util.UUID;
/**
* Tests for ConsumablePartition.
*/
public class ConsumablePartitionTest {
@Test
public void testSimpleTransition() {
// tests simple success case
ConsumablePartition partition = new DefaultConsumablePartition(generateUniqueKey());
Assert.assertEquals(0, partition.getNumFailures());
partition.take();
partition.retry();
Assert.assertEquals(1, partition.getNumFailures());
partition.take();
partition.complete();
}
@Test(expected = IllegalStateException.class)
public void testAlreadyTakenTransition() {
// cannot take a partition that's already taken
ConsumablePartition partition = new DefaultConsumablePartition(generateUniqueKey());
partition.take();
partition.take();
}
@Test(expected = IllegalStateException.class)
public void testRetryWithoutTakenTransition() {
// cannot take retry a partition without it being taken first
ConsumablePartition partition = new DefaultConsumablePartition(generateUniqueKey());
partition.retry();
}
@Test(expected = IllegalStateException.class)
public void testAlreadyCompletedTransition() {
// cannot complete a partition that has already been completed
ConsumablePartition partition = new DefaultConsumablePartition(generateUniqueKey());
partition.take();
partition.complete();
partition.complete();
}
int counter;
// generates unique partition keys, where the 'i' field is incrementing from 0 upwards on each returned key
private PartitionKey generateUniqueKey() {
return PartitionKey.builder()
.addIntField("i", counter++)
.addLongField("l", 17L)
.addStringField("s", UUID.randomUUID().toString())
.build();
}
}