/*
* 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.tokenize;
import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.assertNotSame;
import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import opennlp.tools.cmdline.tokenizer.TokenEvaluationErrorListener;
import opennlp.tools.util.InvalidFormatException;
import opennlp.tools.util.Span;
import org.junit.Test;
public class TokenizerEvaluatorTest {
@Test
public void testPositive() throws InvalidFormatException {
OutputStream stream = new ByteArrayOutputStream();
TokenizerEvaluationMonitor listener = new TokenEvaluationErrorListener(
stream);
TokenizerEvaluator eval = new TokenizerEvaluator(new DummyTokenizer(
TokenSampleTest.createGoldSample()), listener);
eval.evaluateSample(TokenSampleTest.createGoldSample());
assertEquals(1.0, eval.getFMeasure().getFMeasure());
assertEquals(0, stream.toString().length());
}
@Test
public void testNegative() throws InvalidFormatException {
OutputStream stream = new ByteArrayOutputStream();
TokenizerEvaluationMonitor listener = new TokenEvaluationErrorListener(
stream);
TokenizerEvaluator eval = new TokenizerEvaluator(new DummyTokenizer(
TokenSampleTest.createGoldSample()), listener);
eval.evaluateSample(TokenSampleTest.createPredSample());
assertEquals(.5d, eval.getFMeasure().getFMeasure(), .1d);
assertNotSame(0, stream.toString().length());
}
/** a dummy tokenizer that always return something expected */
class DummyTokenizer implements Tokenizer {
private TokenSample sample;
public DummyTokenizer(TokenSample sample) {
this.sample = sample;
}
public String[] tokenize(String s) {
return null;
}
public Span[] tokenizePos(String s) {
return this.sample.getTokenSpans();
}
}
}