code: /* LanguageTool, a natural language style checker
   * Copyright (C) 2005 Daniel Naber (http://www.danielnaber.de)
   * 
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
   * USA
   */
  
  package org.languagetool.tokenizers.nl;
  
  import org.junit.Test;
  
  import java.util.List;
  
  import static org.junit.Assert.assertEquals;
  
  public class DutchWordTokenizerTest {
  
    private final DutchWordTokenizer wordTokenizer = new DutchWordTokenizer();
  
    @Test
    public void testTokenize() {
      assertTokenize("This is\u00A0a test",
                     "[This,  , is,  , a,  , test]");
      assertTokenize("Bla bla oma's bla bla 'test",
                     "[Bla,  , bla,  , oma's,  , bla,  , bla,  , ', test]");
      assertTokenize("Bla bla oma`s bla bla 'test",
                     "[Bla,  , bla,  , oma`s,  , bla,  , bla,  , ', test]");
      assertTokenize("Ik zie het''",
                     "[Ik,  , zie,  , het, ', ']");
      assertTokenize("Ik zie het``",
                     "[Ik,  , zie,  , het, `, `]");
      assertTokenize("''Ik zie het",
                     "[', ', Ik,  , zie,  , het]");
      
      assertTokenize("Ik 'zie' het", "[Ik,  , ', zie, ',  , het]");
      assertTokenize("Ik ‘zie’ het", "[Ik,  , ‘, zie, ’,  , het]");
      assertTokenize("Ik \"zie\" het", "[Ik,  , \", zie, \",  , het]");
      assertTokenize("Ik “zie” het", "[Ik,  , “, zie, ”,  , het]");
      assertTokenize("'zie'", "[', zie, ']");
      assertTokenize("‘zie’", "[‘, zie, ’]");
      assertTokenize("\"zie\"", "[\", zie, \"]");
      assertTokenize("“zie”", "[“, zie, ”]");
      
      assertTokenize("Ik `zie het",
                     "[Ik,  , `, zie,  , het]");
      assertTokenize("Ik ``zie het",
                     "[Ik,  , `, `, zie,  , het]");
      assertTokenize("'", "[']");
      assertTokenize("''", "[, ', ']");
      assertTokenize("'x'", "[', x, ']");
      assertTokenize("`x`", "[`, x, `]");
    }
  
    private void assertTokenize(String input, String expected) {
      List<String> result = wordTokenizer.tokenize(input);
      assertEquals(expected, result.toString());
    }
  }
  