/**
* 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.streaming.io;
import java.io.ByteArrayInputStream;
import java.io.DataInput;
import java.io.DataInputStream;
import java.io.IOException;
import org.junit.Assert;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.streaming.PipeMapRed;
import org.apache.hadoop.streaming.PipeMapper;
import org.junit.Test;
public class TestKeyOnlyTextOutputReader {
@Test
public void testKeyOnlyTextOutputReader() throws IOException {
String text = "key,value\nkey2,value2\nnocomma\n";
PipeMapRed pipeMapRed = new MyPipeMapRed(text);
KeyOnlyTextOutputReader outputReader = new KeyOnlyTextOutputReader();
outputReader.initialize(pipeMapRed);
outputReader.readKeyValue();
Assert.assertEquals(new Text("key,value"), outputReader.getCurrentKey());
outputReader.readKeyValue();
Assert.assertEquals(new Text("key2,value2"), outputReader.getCurrentKey());
outputReader.readKeyValue();
Assert.assertEquals(new Text("nocomma"), outputReader.getCurrentKey());
Assert.assertEquals(false, outputReader.readKeyValue());
}
private class MyPipeMapRed extends PipeMapper {
private DataInput clientIn;
private Configuration conf = new Configuration();
public MyPipeMapRed(String text) {
clientIn = new DataInputStream(new ByteArrayInputStream(text.getBytes()));
}
@Override
public DataInput getClientInput() {
return clientIn;
}
@Override
public Configuration getConfiguration() {
return conf;
}
}
}