/*
 * Copyright ConsenSys AG.
 *
 * Licensed 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
package org.hyperledger.besu.ethereum.eth.sync.fastsync.worldstate;

import static org.assertj.core.api.Assertions.assertThatThrownBy;

import org.hyperledger.besu.ethereum.eth.sync.worldstate.WorldStateDownloaderException;

import java.util.Optional;

import org.junit.Test;

public class NodeDataRequestTest {

  @Test
  public void cannotAssignParentTwice() {
    NodeDataRequest parent =
        new StorageTrieNodeDataRequest(null, Optional.empty(), Optional.empty());
    NodeDataRequest child =
        new StorageTrieNodeDataRequest(null, Optional.empty(), Optional.empty());
    child.registerParent(parent);
    assertThatThrownBy(() -> child.registerParent(parent))
        .isInstanceOf(WorldStateDownloaderException.class);
  }
}
