package org.apache.lucene.search.vectorhighlight;

import org.apache.lucene.index.Term;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;

/*
 * 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.
 */

public class SingleFragListBuilderTest extends AbstractTestCase {
  
  public void testNullFieldFragList() throws Exception {
    SingleFragListBuilder sflb = new SingleFragListBuilder();
    FieldFragList ffl = sflb.createFieldFragList( fpl(new TermQuery(new Term(F, "a")), "b c d" ), 100 );
    assertEquals( 0, ffl.getFragInfos().size() );
  }
  
  public void testShortFieldFragList() throws Exception {
    SingleFragListBuilder sflb = new SingleFragListBuilder();
    FieldFragList ffl = sflb.createFieldFragList( fpl(new TermQuery(new Term(F, "a")), "a b c d" ), 100 );
    assertEquals( 1, ffl.getFragInfos().size() );
    assertEquals( "subInfos=(a((0,1)))/1.0(0,2147483647)", ffl.getFragInfos().get( 0 ).toString() );
  }
  
  public void testLongFieldFragList() throws Exception {
    SingleFragListBuilder sflb = new SingleFragListBuilder();
    FieldFragList ffl = sflb.createFieldFragList( fpl(new TermQuery(new Term(F, "a")), "a b c d", "a b c d e f g h i", "j k l m n o p q r s t u v w x y z a b c", "d e f g" ), 100 );
    assertEquals( 1, ffl.getFragInfos().size() );
    assertEquals( "subInfos=(a((0,1))a((8,9))a((60,61)))/3.0(0,2147483647)", ffl.getFragInfos().get( 0 ).toString() );
  }

  private FieldPhraseList fpl(Query query, String... indexValues ) throws Exception {
    make1dmfIndex( indexValues );
    FieldQuery fq = new FieldQuery( query, true, true );
    FieldTermStack stack = new FieldTermStack( reader, 0, F, fq );
    return new FieldPhraseList( stack, fq );
  }

}
