src/Lucene.Net.Tests.Highlighter/VectorHighlight/ScoreOrderFragmentsBuilderTest.cs

using Lucene.Net.Index;
using NUnit.Framework;
using System;

namespace Lucene.Net.Search.VectorHighlight
{
    /*
     * 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 ScoreOrderFragmentsBuilderTest : AbstractTestCase
    {
        [Test]
        public void Test3Frags()
        {
            BooleanQuery query = new BooleanQuery();
            query.Add(new TermQuery(new Term(F, "a")), Occur.SHOULD);
            query.Add(new TermQuery(new Term(F, "c")), Occur.SHOULD);

            FieldFragList ffl = Ffl(query, "a b b b b b b b b b b b a b a b b b b b c a a b b");
            ScoreOrderFragmentsBuilder sofb = new ScoreOrderFragmentsBuilder();
            String[] f = sofb.CreateFragments(reader, 0, F, ffl, 3);
            assertEquals(3, f.Length);
            // check score order
            assertEquals("<b>c</b> <b>a</b> <b>a</b> b b", f[0]);
            assertEquals("b b <b>a</b> b <b>a</b> b b b b b c", f[1]);
            assertEquals("<b>a</b> b b b b b b b b b b", f[2]);
        }

        private FieldFragList Ffl(Query query, String indexValue)
        {
            make1d1fIndex(indexValue);
            FieldQuery fq = new FieldQuery(query, true, true);
            FieldTermStack stack = new FieldTermStack(reader, 0, F, fq);
            FieldPhraseList fpl = new FieldPhraseList(stack, fq);
            return new SimpleFragListBuilder().CreateFieldFragList(fpl, 20);
        }
    }
}