src/test/java/org/apache/hadoop/mrunit/TestConfigureClose.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.hadoop.mrunit;

import static org.junit.Assert.assertTrue;

import java.io.IOException;
import java.util.Iterator;
import java.util.concurrent.atomic.AtomicBoolean;

import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.Mapper;
import org.apache.hadoop.mapred.OutputCollector;
import org.apache.hadoop.mapred.Reducer;
import org.apache.hadoop.mapred.Reporter;
import org.junit.Test;

public class TestConfigureClose {

  @Test
  public void testMapperConfigureClose() throws IOException {
    final AtomicBoolean configureWasCalled = new AtomicBoolean(false);
    final AtomicBoolean closeWasCalled = new AtomicBoolean(false);
    final Mapper<Text, Text, Text, Text> mapper = new Mapper<Text, Text, Text, Text>() {
      @Override
      public void configure(final JobConf arg0) {
        configureWasCalled.set(true);
      }

      @Override
      public void close() throws IOException {
        closeWasCalled.set(true);
      }

      @Override
      public void map(final Text key, final Text value,
          final OutputCollector<Text, Text> output, final Reporter reporter)
          throws IOException {
      }
    };
    final MapDriver<Text, Text, Text, Text> driver = MapDriver
        .newMapDriver(mapper);
    driver.withInput(new Text("foo"), new Text("bar")).runTest();
    assertTrue(configureWasCalled.get());
    assertTrue(closeWasCalled.get());
  }

  @Test
  @SuppressWarnings("deprecation")
  public void testReducerConfigureClose() throws IOException {
    final AtomicBoolean configureWasCalled = new AtomicBoolean(false);
    final AtomicBoolean closeWasCalled = new AtomicBoolean(false);
    final Reducer<Text, Text, Text, Text> reducer = new Reducer<Text, Text, Text, Text>() {
      @Override
      public void configure(final JobConf arg0) {
        configureWasCalled.set(true);
      }

      @Override
      public void close() throws IOException {
        closeWasCalled.set(true);
      }

      @Override
      public void reduce(final Text arg0, final Iterator<Text> arg1,
          final OutputCollector<Text, Text> arg2, final Reporter arg3)
          throws IOException {
      }
    };
    final ReduceDriver<Text, Text, Text, Text> driver = ReduceDriver
        .newReduceDriver(reducer);
    driver.withInputKey(new Text("foo")).withInputValue(new Text("bar"))
        .runTest();
    assertTrue(configureWasCalled.get());
    assertTrue(closeWasCalled.get());
  }
}