crunch-core/src/test/java/org/apache/crunch/lib/TupleWritablePartitionerTest.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
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package org.apache.crunch.lib;

import static org.junit.Assert.assertEquals;

import org.apache.crunch.lib.join.JoinUtils.TupleWritablePartitioner;
import org.apache.crunch.types.writable.TupleWritable;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.io.WritableUtils;
import org.junit.Before;
import org.junit.Test;

public class TupleWritablePartitionerTest {

  private TupleWritablePartitioner tupleWritableParitioner;

  @Before
  public void setUp() {
    tupleWritableParitioner = new TupleWritablePartitioner();
  }

  @Test
  public void testGetPartition() {
    IntWritable intWritable = new IntWritable(3);
    BytesWritable bw = new BytesWritable(WritableUtils.toByteArray(intWritable));
    TupleWritable key = new TupleWritable(new Writable[] { bw });
    assertEquals(4, tupleWritableParitioner.getPartition(key, NullWritable.get(), 5));
    assertEquals(0, tupleWritableParitioner.getPartition(key, NullWritable.get(), 2));
  }
}