/*
 * 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.util;

import java.util.Collections;
import org.apache.lucene.tests.util.LuceneTestCase;

public class TestPriorityQueueTwoToThe30Elements extends LuceneTestCase {

  public void testUpdateTop() {
    int n = 1 << 30;
    PriorityQueue<Integer> pq = PriorityQueue.usingComparator(n, Integer::compare);
    pq.addAll(Collections.nCopies(n, 0));
    // expected: 1 sinks to a leaf and the new top is 0; actual: AIOOBE, index -2147483647
    assertEquals(0, (int) pq.updateTop(1));
  }
}