/**
* 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.mahout.classifier.bayes;
import junit.framework.TestCase;
import org.apache.hadoop.io.DoubleWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.Reporter;
import org.apache.mahout.classifier.bayes.mapreduce.common.BayesFeatureMapper;
import org.apache.mahout.classifier.bayes.common.BayesParameters;
import org.apache.mahout.common.DummyOutputCollector;
import org.apache.mahout.common.StringTuple;
import java.util.List;
import java.util.Map;
public class BayesFeatureMapperTest extends TestCase {
public void test() throws Exception {
BayesFeatureMapper mapper = new BayesFeatureMapper();
JobConf conf = new JobConf();
conf.set("io.serializations",
"org.apache.hadoop.io.serializer.JavaSerialization,org.apache.hadoop.io.serializer.WritableSerialization");
conf.set("bayes.parameters", new BayesParameters(3).toString());
mapper.configure(conf);
DummyOutputCollector<StringTuple, DoubleWritable> output = new DummyOutputCollector<StringTuple, DoubleWritable>();
mapper.map(new Text("foo"), new Text("big brown shoe"), output, Reporter.NULL);
Map<String, List<DoubleWritable>> outMap = output.getData();
System.out.println("Map: " + outMap);
assertNotNull("outMap is null and it shouldn't be", outMap);
//TODO: How about not such a lame test here?
for (Map.Entry<String, List<DoubleWritable>> entry : outMap.entrySet()) {
assertTrue("entry.getKey() Size: " + entry.getKey().length() + " is not greater than: 0", entry.getKey().length() > 0);
assertEquals("entry.getValue() Size: " + entry.getValue().size() + " is not: 1", 1, entry.getValue().size());
assertTrue("value is not valie", entry.getValue().get(0).get() > 0);
}
}
}