| /** |
| * 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.internal.mapred; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.mapred.MapReduceBase; |
| import org.apache.hadoop.mapred.Mapper; |
| import org.apache.hadoop.mapred.OutputCollector; |
| import org.apache.hadoop.mapred.Reporter; |
| import org.apache.hadoop.mrunit.MapDriver; |
| import org.junit.Test; |
| |
| public class TestMockOutputCollector { |
| |
| /** |
| * A mapper that reuses the same key and val objects to emit multiple values |
| */ |
| class RepeatMapper extends MapReduceBase implements |
| Mapper<Text, Text, Text, Text> { |
| @Override |
| public void map(final Text k, final Text v, |
| final OutputCollector<Text, Text> out, final Reporter r) |
| throws IOException { |
| final Text outKey = new Text(); |
| final Text outVal = new Text(); |
| |
| outKey.set("1"); |
| outVal.set("a"); |
| out.collect(outKey, outVal); |
| |
| outKey.set("2"); |
| outVal.set("b"); |
| out.collect(outKey, outVal); |
| |
| outKey.set("3"); |
| outVal.set("c"); |
| out.collect(outKey, outVal); |
| } |
| } |
| |
| @Test |
| public void testRepeatedObjectUse() throws IOException { |
| final Mapper<Text, Text, Text, Text> mapper = new RepeatMapper(); |
| final MapDriver<Text, Text, Text, Text> driver = MapDriver |
| .newMapDriver(mapper); |
| |
| driver.withInput(new Text("inK"), new Text("inV")) |
| .withOutput(new Text("1"), new Text("a")) |
| .withOutput(new Text("2"), new Text("b")) |
| .withOutput(new Text("3"), new Text("c")).runTest(); |
| } |
| } |