indexing-hadoop/src/test/java/org/apache/druid/indexer/BucketTest.java

/*
 * 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.druid.indexer;

import com.google.common.primitives.Bytes;
import org.apache.druid.java.util.common.DateTimes;
import org.apache.druid.java.util.common.Pair;
import org.hamcrest.number.OrderingComparison;
import org.joda.time.DateTime;
import org.joda.time.chrono.ISOChronology;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

public class BucketTest
{
  Bucket bucket;
  int shardNum;
  int partitionNum;
  DateTime time;

  @Before public void setUp()
  {
    time = new DateTime(2014, 11, 24, 10, 30, ISOChronology.getInstanceUTC());
    shardNum = 1;
    partitionNum = 1;
    bucket = new Bucket(shardNum, time, partitionNum);
  }

  @After public void tearDown()
  {
    bucket = null;
  }

  @Test public void testToGroupKey()
  {
    byte[] firstPart = {1, 1, 0, 10};
    byte[] secondPart = {2, 4, 0, 5};
    byte[] expectedGroupParts = bucket.toGroupKey(firstPart, secondPart);
    Pair<Bucket, byte[]> actualPair = Bucket.fromGroupKey(expectedGroupParts);
    Assert.assertEquals("Bucket is not matching", bucket, actualPair.lhs);
    Assert.assertArrayEquals("Parts not matching", Bytes.concat(firstPart, secondPart), actualPair.rhs);
  }

  @Test public void testToString()
  {
    String expectedString = "Bucket{" +
        "time=" + time +
        ", partitionNum=" + partitionNum +
        ", shardNum=" + shardNum +
        '}';
    Assert.assertEquals(bucket.toString(), expectedString);
  }

  @Test public void testEquals()
  {
    //noinspection ObjectEqualsNull
    Assert.assertFalse("Object should not be equals to NULL", bucket.equals(null));
    //noinspection EqualsBetweenInconvertibleTypes
    Assert.assertFalse("Objects do not have the same Class", bucket.equals(0));
    Assert.assertFalse("Objects do not have the same partitionNum",
        bucket.equals(new Bucket(shardNum, time, partitionNum + 1)));
    Assert.assertFalse("Objects do not have the same shardNum",
        bucket.equals(new Bucket(shardNum + 1, time, partitionNum)));
    Assert.assertFalse(
        "Objects do not have the same time",
        bucket.equals(new Bucket(shardNum, DateTimes.nowUtc(), partitionNum))
    );
    Assert.assertFalse("Object do have NULL time", bucket.equals(new Bucket(shardNum, null, partitionNum)));
    Assert.assertTrue("Objects must be the same", bucket.equals(new Bucket(shardNum, time, partitionNum)));
  }

  @Test public void testHashCode()
  {
    int hashCode = bucket.hashCode();
    Assert.assertThat(hashCode, OrderingComparison.greaterThanOrEqualTo(31 * partitionNum + shardNum));
    bucket = new Bucket(shardNum, null, partitionNum);
    hashCode = bucket.hashCode();
    Assert.assertEquals(hashCode, (31 * partitionNum + shardNum));
  }
}