/*
* 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 opennlp.tools.lemmatizer;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import org.junit.Assert;
import org.junit.Test;
import opennlp.tools.cmdline.lemmatizer.LemmaEvaluationErrorListener;
import opennlp.tools.util.MockInputStreamFactory;
import opennlp.tools.util.PlainTextByLineStream;
/**
* Tests for {@link LemmatizerEvaluator}.
*
* @see opennlp.tools.chunker.ChunkerEvaluator
*/
public class LemmatizerEvaluatorTest {
private static final double DELTA = 1.0E-9d;
/**
* Checks the evaluator results against the results got using the conlleval,
* available at http://www.cnts.ua.ac.be/conll2000/chunking/output.html but
* containing lemmas instead of chunks.
*
* @throws IOException
*/
@Test
public void testEvaluator() throws IOException {
String inPredicted = "opennlp/tools/lemmatizer/output.txt";
String inExpected = "opennlp/tools/lemmatizer/output.txt";
String encoding = "UTF-8";
DummyLemmaSampleStream predictedSample = new DummyLemmaSampleStream(
new PlainTextByLineStream(
new MockInputStreamFactory(new File(inPredicted)), encoding), true);
DummyLemmaSampleStream expectedSample = new DummyLemmaSampleStream(
new PlainTextByLineStream(
new MockInputStreamFactory(new File(inExpected)), encoding), false);
Lemmatizer dummyLemmatizer = new DummyLemmatizer(predictedSample);
OutputStream stream = new ByteArrayOutputStream();
LemmatizerEvaluationMonitor listener = new LemmaEvaluationErrorListener(stream);
LemmatizerEvaluator evaluator = new LemmatizerEvaluator(dummyLemmatizer, listener);
evaluator.evaluate(expectedSample);
Assert.assertEquals(0.9877049180327869, evaluator.getWordAccuracy(), DELTA);
Assert.assertNotSame(stream.toString().length(), 0);
}
}