/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreemnets. 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.sentdetect;
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import opennlp.tools.util.PlainTextByLineStream;
import opennlp.tools.util.Span;
import org.junit.Test;
/**
* Tests for the {@link SentenceDetectorME} class.
*/
public class SentenceDetectorMETest {
@Test
public void testSentenceDetector() throws IOException {
InputStream in = getClass().getResourceAsStream(
"/opennlp/tools/sentdetect/Sentences.txt");
SentenceModel sentdetectModel = SentenceDetectorME.train(
"en", new SentenceSampleStream(new PlainTextByLineStream(new InputStreamReader(in))), true, null, 100, 0);
assertEquals("en", sentdetectModel.getLanguage());
SentenceDetectorME sentDetect = new SentenceDetectorME(sentdetectModel);
// Tests sentence detector with sentDetect method
String sampleSentences1 = "This is a test. There are many tests, this is the second.";
String[] sents = sentDetect.sentDetect(sampleSentences1);
assertEquals(sents.length,2);
assertEquals(sents[0],"This is a test.");
assertEquals(sents[1],"There are many tests, this is the second.");
double[] probs = sentDetect.getSentenceProbabilities();
assertEquals(probs.length,2);
String sampleSentences2 = "This is a test. There are many tests, this is the second";
sents = sentDetect.sentDetect(sampleSentences2);
assertEquals(sents.length,2);
probs = sentDetect.getSentenceProbabilities();
assertEquals(probs.length,2);
assertEquals(sents[0],"This is a test.");
assertEquals(sents[1],"There are many tests, this is the second");
String sampleSentences3 = "This is a \"test\". He said \"There are many tests, this is the second.\"";
sents = sentDetect.sentDetect(sampleSentences3);
assertEquals(sents.length,2);
probs = sentDetect.getSentenceProbabilities();
assertEquals(probs.length,2);
assertEquals(sents[0],"This is a \"test\".");
assertEquals(sents[1],"He said \"There are many tests, this is the second.\"");
String sampleSentences4 = "This is a \"test\". I said \"This is a test.\" Any questions?";
sents = sentDetect.sentDetect(sampleSentences4);
assertEquals(sents.length,3);
probs = sentDetect.getSentenceProbabilities();
assertEquals(probs.length,3);
assertEquals(sents[0],"This is a \"test\".");
assertEquals(sents[1],"I said \"This is a test.\"");
assertEquals(sents[2],"Any questions?");
String sampleSentences5 = "This is a one sentence test space at the end. ";
sents = sentDetect.sentDetect(sampleSentences5);
assertEquals(1, sentDetect.getSentenceProbabilities().length);
assertEquals(sents[0],"This is a one sentence test space at the end.");
String sampleSentences6 = "This is a one sentences test with tab at the end. ";
sents = sentDetect.sentDetect(sampleSentences6);
assertEquals(sents[0],"This is a one sentences test with tab at the end.");
String sampleSentences7 = "This is a test. With spaces between the two sentences.";
sents = sentDetect.sentDetect(sampleSentences7);
assertEquals(sents[0],"This is a test.");
assertEquals(sents[1],"With spaces between the two sentences.");
String sampleSentences9 = "";
sents = sentDetect.sentDetect(sampleSentences9);
assertEquals(0, sents.length);
String sampleSentences10 = " "; // whitespaces and tabs
sents = sentDetect.sentDetect(sampleSentences10);
assertEquals(0, sents.length);
String sampleSentences11 = "This is test sentence without a dot at the end and spaces ";
sents = sentDetect.sentDetect(sampleSentences11);
assertEquals(sents[0],"This is test sentence without a dot at the end and spaces");
probs = sentDetect.getSentenceProbabilities();
assertEquals(1, probs.length);
String sampleSentence12 = " This is a test.";
sents = sentDetect.sentDetect(sampleSentence12);
assertEquals(sents[0],"This is a test.");
String sampleSentence13 = " This is a test";
sents = sentDetect.sentDetect(sampleSentence13);
assertEquals(sents[0],"This is a test");
// Test that sentPosDetect also works
Span pos[] = sentDetect.sentPosDetect(sampleSentences2);
assertEquals(pos.length,2);
probs = sentDetect.getSentenceProbabilities();
assertEquals(probs.length,2);
assertEquals(new Span(0, 15), pos[0]);
assertEquals(new Span(16, 56), pos[1]);
}
}