/*
 * 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.bookkeeper.stream.storage.impl.cluster;

import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;

import org.apache.bookkeeper.stream.storage.api.cluster.ClusterControllerLeader;
import org.apache.curator.framework.CuratorFramework;
import org.junit.Test;

/**
 * Unit test {@link ZkClusterControllerLeaderSelectorListener}.
 */
public class ZkClusterControllerLeaderSelectorListenerTest {

    @Test
    public void testTakeLeadership() throws Exception {
        ClusterControllerLeader leaderLogic = mock(ClusterControllerLeader.class);

        ZkClusterControllerLeaderSelectorListener listener = new ZkClusterControllerLeaderSelectorListener(leaderLogic);
        CuratorFramework curator = mock(CuratorFramework.class);
        listener.takeLeadership(curator);

        // if the listener is taking the leadership, it should execute the leader logic
        verify(leaderLogic, times(1)).processAsLeader();
    }

}
