code: /* LanguageTool, a natural language style checker
   * Copyright (C) 2009 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.rules.patterns;
  
  import com.google.common.collect.Sets;
  import org.junit.Test;
  import org.languagetool.AnalyzedToken;
  
  import static org.junit.Assert.*;
  import static org.languagetool.JLanguageTool.*;
  import static org.languagetool.rules.patterns.PatternToken.UNKNOWN_TAG;
  
  public class PatternTokenTest {
  
    @Test
    public void testSentenceStart() {
      PatternToken patternToken = new PatternToken("", false, false, false);
      patternToken.setPosToken(new PatternToken.PosToken(SENTENCE_START_TAGNAME, false, false));
      assertTrue(patternToken.isSentenceStart());
      patternToken.setPosToken(new PatternToken.PosToken(SENTENCE_START_TAGNAME, false, true));
      assertFalse(patternToken.isSentenceStart());
      patternToken.setPosToken(new PatternToken.PosToken(SENTENCE_START_TAGNAME, true, false));
      assertTrue(patternToken.isSentenceStart());
      patternToken.setPosToken(new PatternToken.PosToken(SENTENCE_START_TAGNAME, true, true));
      assertFalse(patternToken.isSentenceStart());
  
      PatternToken patternToken2 = new PatternToken("bla|blah", false, true, false);
      patternToken2.setPosToken(new PatternToken.PosToken("foo", true, true));
      assertFalse(patternToken2.isSentenceStart());
    }
  
    @Test
    public void testUnknownTag() {
      PatternToken patternToken = new PatternToken("", false, false, false);
      patternToken.setPosToken(new PatternToken.PosToken(UNKNOWN_TAG, false, false));
  
      PatternToken patternToken2 = new PatternToken("", false, false, false);
      patternToken2.setPosToken(new PatternToken.PosToken(UNKNOWN_TAG, false, true));
  
      PatternToken patternToken3 = new PatternToken("", false, false, false);
      patternToken3.setPosToken(new PatternToken.PosToken(UNKNOWN_TAG + "|VBG", true, false));
  
      PatternToken patternToken4 = new PatternToken("", false, false, false);
      patternToken4.setPosToken(new PatternToken.PosToken(UNKNOWN_TAG + "|VBG", true, true));
  
      PatternToken patternToken5 = new PatternToken("\\p{Ll}+", false, true, false);
      patternToken5.setPosToken(new PatternToken.PosToken(UNKNOWN_TAG, false, false));
  
      AnalyzedToken an = new AnalyzedToken("schword", null, null);
      assertTrue(patternToken.isMatched(an));
      assertFalse(patternToken2.isMatched(an));
      assertTrue(patternToken3.isMatched(an));
      assertFalse(patternToken4.isMatched(an));
      assertTrue(patternToken5.isMatched(an));
  
      // if the AnalyzedToken is in the set of readings that have
      //non-null tags...
      an.setNoPOSTag(false);
      assertFalse(patternToken.isMatched(an));
      assertTrue(patternToken2.isMatched(an));
      assertFalse(patternToken3.isMatched(an));
      assertTrue(patternToken4.isMatched(an));
      assertFalse(patternToken5.isMatched(an));
  
      AnalyzedToken anSentEnd = new AnalyzedToken("schword", SENTENCE_END_TAGNAME, null);
      assertTrue(patternToken.isMatched(anSentEnd));
      assertFalse(patternToken2.isMatched(anSentEnd));
      assertTrue(patternToken3.isMatched(anSentEnd));
      assertFalse(patternToken4.isMatched(anSentEnd));
      assertTrue(patternToken5.isMatched(anSentEnd));
  
      PatternToken patternToken6 = new PatternToken("\\p{Ll}+", false, true, false);
      patternToken6.setPosToken(new PatternToken.PosToken(SENTENCE_END_TAGNAME, false, false));
      assertTrue(patternToken6.isMatched(anSentEnd));
  
      PatternToken patternToken7 = new PatternToken("\\p{Ll}+", false, true, false);
      patternToken7.setPosToken(new PatternToken.PosToken(SENTENCE_END_TAGNAME + "|BLABLA", true, false));
      assertTrue(patternToken7.isMatched(anSentEnd));
  
      // if the AnalyzedToken is in the set of readings that have
      //non-null tags...
      anSentEnd.setNoPOSTag(false);
      assertFalse(patternToken.isMatched(anSentEnd));
      assertTrue(patternToken2.isMatched(anSentEnd));
      assertFalse(patternToken3.isMatched(anSentEnd));
      assertTrue(patternToken4.isMatched(anSentEnd));
      assertFalse(patternToken5.isMatched(anSentEnd));
  
      AnalyzedToken anParaEnd = new AnalyzedToken("schword", PARAGRAPH_END_TAGNAME, null);
      assertTrue(patternToken.isMatched(anParaEnd));
      assertFalse(patternToken2.isMatched(anParaEnd));
      assertTrue(patternToken3.isMatched(anParaEnd));
      assertFalse(patternToken4.isMatched(anParaEnd));
      assertTrue(patternToken5.isMatched(anParaEnd));
  
      // if the AnalyzedToken is in the set of readings that have
      //non-null tags...
      anParaEnd.setNoPOSTag(false);
      assertFalse(patternToken.isMatched(anParaEnd));
      assertTrue(patternToken2.isMatched(anParaEnd));
      assertFalse(patternToken3.isMatched(anParaEnd));
      assertTrue(patternToken4.isMatched(anParaEnd));
      assertFalse(patternToken5.isMatched(anParaEnd));
  
      AnalyzedToken anWithPOS = new AnalyzedToken("schword", "POS", null);
      assertFalse(patternToken.isMatched(anWithPOS));
      assertTrue(patternToken2.isMatched(anWithPOS));
      assertFalse(patternToken3.isMatched(anWithPOS));
      assertTrue(patternToken4.isMatched(anWithPOS));
      assertFalse(patternToken5.isMatched(anWithPOS));
    }
  
    @Test
    public void testNegation() {
  
      PatternToken token = new PatternTokenBuilder().tokenRegex("an?|the").negate().build();
      assertTrue(token.getNegation());
  
      token = new PatternTokenBuilder().tokenRegex("an?|the").build();
      assertFalse(token.getNegation());
  
      token = new PatternTokenBuilder().pos("NNS").negate().build();
      assertTrue(token.getNegation());
  
      token = new PatternTokenBuilder().pos("NNS").build();
      assertFalse(token.getNegation());
  
      token = new PatternTokenBuilder().token("text").negate().build();
      assertTrue(token.getNegation());
  
      token = new PatternTokenBuilder().token("text").build();
      assertFalse(token.getNegation());
  
    }
  
    @Test
    public void testFormHints() {
      PatternToken token = new PatternTokenBuilder().tokenRegex("an?|the|th[eo]se").build();
      assertEquals(Sets.newHashSet("a", "an", "the", "these", "those"), token.calcFormHints());
  
      token = new PatternTokenBuilder().token("foo").build();
      assertEquals(Sets.newHashSet("foo"), token.calcFormHints());
  
      token = new PatternTokenBuilder().tokenRegex("(foo)?.*").build();
      assertNull(token.calcFormHints());
  
      token = new PatternTokenBuilder().csTokenRegex("a|b").build();
      assertEquals(Sets.newHashSet("a", "b"), token.calcFormHints());
  
      token = new PatternTokenBuilder().token("a").min(0).build();
      assertNull(token.calcFormHints());
  
      token = new PatternTokenBuilder().tokenRegex("an|the").build();
      token.setOrGroupElement(new PatternTokenBuilder().tokenRegex("foo|bar").build());
      assertEquals(Sets.newHashSet("an", "the", "foo", "bar"), token.calcFormHints());
      token.setOrGroupElement(new PatternTokenBuilder().tokenRegex("foo.*|bar").build());
      assertNull(token.calcFormHints());
  
      token = new PatternTokenBuilder().tokenRegex("an|the").build();
      token.setAndGroupElement(new PatternTokenBuilder().tokenRegex("foo|an").build());
      assertEquals(Sets.newHashSet("an"), token.calcFormHints());
    }
  }
  