/**
 * 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.hadoop.hbase.mapreduce;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.testclassification.MediumTests;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;

import static org.junit.Assert.assertEquals;

@Category(MediumTests.class)
public class TestHRegionPartitioner {
  private static final HBaseTestingUtility UTIL = new HBaseTestingUtility();

  @BeforeClass
  public static void beforeClass() throws Exception {
    UTIL.startMiniCluster();
    UTIL.startMiniMapReduceCluster();
  }

  @AfterClass
  public static void afterClass() throws Exception {
    UTIL.shutdownMiniMapReduceCluster();
    UTIL.shutdownMiniCluster();
  }

  /**
   * Test HRegionPartitioner
   */
  @Test (timeout=300000)
  public void testHRegionPartitioner() throws Exception {

    byte[][] families = { Bytes.toBytes("familyA"), Bytes.toBytes("familyB") };

    UTIL.createTable(TableName.valueOf("out_table"), families, 1,
    Bytes.toBytes("aa"), Bytes.toBytes("cc"), 3);

    HRegionPartitioner<Long, Long> partitioner = new HRegionPartitioner<Long, Long>();
    Configuration configuration = UTIL.getConfiguration();
    configuration.set(TableOutputFormat.OUTPUT_TABLE, "out_table");
    partitioner.setConf(configuration);
    ImmutableBytesWritable writable = new ImmutableBytesWritable(Bytes.toBytes("bb"));

    assertEquals(1, partitioner.getPartition(writable, 10L, 3));
    assertEquals(0, partitioner.getPartition(writable, 10L, 1));
  }
}