/**
* 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.naivebayes.training;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Counter;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.mahout.common.MahoutTestCase;
import org.apache.mahout.math.DenseVector;
import org.apache.mahout.math.VectorWritable;
import org.apache.mahout.math.map.OpenObjectIntHashMap;
import org.easymock.EasyMock;
import org.junit.Before;
import org.junit.Test;
public class IndexInstancesMapperTest extends MahoutTestCase {
private Mapper.Context ctx;
private OpenObjectIntHashMap<String> labelIndex;
private VectorWritable instance;
@Override
@Before
public void setUp() throws Exception {
super.setUp();
ctx = EasyMock.createMock(Mapper.Context.class);
instance = new VectorWritable(new DenseVector(new double[] { 1, 0, 1, 1, 0 }));
labelIndex = new OpenObjectIntHashMap<String>();
labelIndex.put("bird", 0);
labelIndex.put("cat", 1);
}
@Test
public void index() throws Exception {
ctx.write(new IntWritable(0), instance);
EasyMock.replay(ctx);
IndexInstancesMapper indexInstances = new IndexInstancesMapper();
setField(indexInstances, "labelIndex", labelIndex);
indexInstances.map(new Text("/bird/"), instance, ctx);
EasyMock.verify(ctx);
}
@Test
public void skip() throws Exception {
Counter skippedInstances = EasyMock.createMock(Counter.class);
EasyMock.expect(ctx.getCounter(IndexInstancesMapper.Counter.SKIPPED_INSTANCES)).andReturn(skippedInstances);
skippedInstances.increment(1);
EasyMock.replay(ctx, skippedInstances);
IndexInstancesMapper indexInstances = new IndexInstancesMapper();
setField(indexInstances, "labelIndex", labelIndex);
indexInstances.map(new Text("/fish/"), instance, ctx);
EasyMock.verify(ctx, skippedInstances);
}
}