/*
 * 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 org.apache.lucene.analysis.ru;


import java.io.IOException;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.CharArraySet;

/**
 * Test case for RussianAnalyzer.
 */

public class TestRussianAnalyzer extends BaseTokenStreamTestCase {
  
  /** Check that RussianAnalyzer doesnt discard any numbers */
  public void testDigitsInRussianCharset() throws IOException
  {
    RussianAnalyzer ra = new RussianAnalyzer();
    assertAnalyzesTo(ra, "text 1000", new String[] { "text", "1000" });
    ra.close();
  }
  
  public void testReusableTokenStream() throws Exception {
    Analyzer a = new RussianAnalyzer();
    assertAnalyzesTo(a, "Вместе с тем о силе электромагнитной энергии имели представление еще",
        new String[] { "вмест", "сил", "электромагнитн", "энерг", "имел", "представлен" });
    assertAnalyzesTo(a, "Но знание это хранилось в тайне",
        new String[] { "знан", "эт", "хран", "тайн" });
    a.close();
  }
  
  
  public void testWithStemExclusionSet() throws Exception {
    CharArraySet set = new CharArraySet( 1, true);
    set.add("представление");
    Analyzer a = new RussianAnalyzer( RussianAnalyzer.getDefaultStopSet() , set);
    assertAnalyzesTo(a, "Вместе с тем о силе электромагнитной энергии имели представление еще",
        new String[] { "вмест", "сил", "электромагнитн", "энерг", "имел", "представление" });
    a.close();
  }
  
  /** blast some random strings through the analyzer */
  public void testRandomStrings() throws Exception {
    Analyzer analyzer = new RussianAnalyzer();
    checkRandomData(random(), analyzer, 1000*RANDOM_MULTIPLIER);
    analyzer.close();
  }
}