/*
 * 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.
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package org.apache.lucene.search.uhighlight;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.TextField;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.MatchAllDocsQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.store.ByteBuffersDirectory;
import org.apache.lucene.store.Directory;
import org.apache.lucene.tests.util.LuceneTestCase;

public class TestUHSummaryMultiValueSeparator extends LuceneTestCase {

  public void testNoMatchSummaryOfMultiValuedFieldHasNoSeparator() throws Exception {
    Analyzer analyzer = new StandardAnalyzer();
    try (Directory dir = new ByteBuffersDirectory()) {
      try (IndexWriter w = new IndexWriter(dir, new IndexWriterConfig(analyzer))) {
        Document doc = new Document();
        doc.add(new TextField("body", "First value.", Field.Store.YES));
        doc.add(new TextField("body", "Second value.", Field.Store.YES));
        w.addDocument(doc);
      }
      try (DirectoryReader reader = DirectoryReader.open(dir)) {
        IndexSearcher searcher = new IndexSearcher(reader);
        Query query = MatchAllDocsQuery.INSTANCE;
        TopDocs topDocs = searcher.search(query, 1);
        UnifiedHighlighter highlighter = UnifiedHighlighter.builder(searcher, analyzer).build();
        String summary = highlighter.highlight("body", query, topDocs, 2)[0];
        // expected: the field's first 2 sentences, no U+0000; actual: "First value." + U+0000
        assertFalse(
            "2-passage summary contains the U+0000 value separator: "
                + summary.replace("\u0000", "\\u0000"),
            summary.contains("\u0000"));
      }
    }
  }
}