/*
 * 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.codecs;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.lucene.store.DataOutput;
import org.apache.lucene.tests.util.LuceneTestCase;

public class TestSingleLevelSkipWriter extends LuceneTestCase {

  public void testSingleLevelSkipList() throws IOException {
    List<Integer> levels = new ArrayList<>();
    MultiLevelSkipListWriter w =
        new MultiLevelSkipListWriter(4, 2, 1, 64) {
          @Override
          protected void writeSkipData(int level, DataOutput out) {
            levels.add(level);
          }
        };
    w.resetSkip();
    w.bufferSkip(4);
    w.bufferSkip(8);
    // expected: both entries on level 0; actual: ArrayIndexOutOfBoundsException at bufferSkip(8)
    assertEquals(List.of(0, 0), levels);
  }
}