/*
 * 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.index;

import org.apache.lucene.document.Document;
import org.apache.lucene.document.StoredField;
import org.apache.lucene.store.ByteBuffersDirectory;
import org.apache.lucene.store.Directory;
import org.apache.lucene.tests.util.LuceneTestCase;
import org.apache.lucene.tests.util.TestUtil;

public class TestStoredStringOver1GiBUtf8 extends LuceneTestCase {

  public void testReadBackStoredStringOf2Pow30Minus1Utf8Bytes() throws Exception {
    // 2^30 - 1 UTF-8 bytes; expected: document(0) returns it; actual: OutOfMemoryError (readString)
    String value = "\u4e00".repeat(357_913_941);
    try (Directory dir = new ByteBuffersDirectory()) {
      try (IndexWriter w =
          new IndexWriter(dir, new IndexWriterConfig().setCodec(TestUtil.getDefaultCodec()))) {
        Document doc = new Document();
        doc.add(new StoredField("f", value));
        w.addDocument(doc);
      }
      try (DirectoryReader r = DirectoryReader.open(dir)) {
        String read;
        try {
          read = r.storedFields().document(0).get("f");
        } catch (OutOfMemoryError e) {
          throw new AssertionError("document(0) threw " + e, e);
        }
        assertEquals(value, read);
      }
    }
  }
}