LongWritableToTextConverterTest.java

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 * Pentaho Big Data
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 * Copyright (C) 2002-2015 by Pentaho : http://www.pentaho.com
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 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with
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 *    http://www.apache.org/licenses/LICENSE-2.0
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package org.pentaho.hadoop.mapreduce.converter.converters;

import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.junit.Test;

import static org.junit.Assert.*;

public class LongWritableToTextConverterTest {
  @Test
  public void canConvert() throws Exception {
    LongWritableToTextConverter c = new LongWritableToTextConverter();

    assertTrue( c.canConvert( LongWritable.class, Text.class ) );
    assertFalse( c.canConvert( null, null ) );
    assertFalse( c.canConvert( LongWritable.class, Object.class ) );
    assertFalse( c.canConvert( Object.class, Text.class ) );
  }

  @Test
  public void convert() throws Exception {
    LongWritableToTextConverter c = new LongWritableToTextConverter();
    Long expected = 10L;

    assertEquals( new Text( "10" ), c.convert( null, new LongWritable( expected ) ) );

    try {
      c.convert( null, null );
      fail();
    } catch ( NullPointerException ex ) {
      // Expected
    }
  }
}