NGramStringListIterableTest.java

/*
 * Copyright 2011
 * Ubiquitous Knowledge Processing (UKP) Lab
 * Technische Universität Darmstadt
 *
 * Licensed 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 de.tudarmstadt.ukp.dkpro.core.ngrams.util;


import static org.junit.Assert.assertEquals;

import java.util.List;

import org.apache.commons.lang.StringUtils;
import org.junit.Test;

public class NGramStringListIterableTest
{
    @Test
    public void ngramTest() {
        
        String[] tokens = "This is a simple example sentence .".split(" ");
        
        int i=0;
        for (List<String> ngram : new NGramStringListIterable(tokens, 2, 2)) {
            if (i==0) {
                assertEquals(2, ngram.size());
                assertEquals("This is", StringUtils.join(ngram, " "));
            }
            
            System.out.println(ngram);
            i++;
        }
        assertEquals(6, i);
    }
}