/*
 * 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.cassandra.bridge;

import org.junit.jupiter.api.Test;

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

/**
 * Tests for {@link CdcBridgeFactory} shutdown hook registration.
 * Relies on {@code forkEvery = 1} so each test class gets a fresh JVM with clean static state.
 */
public class CdcBridgeFactoryShutdownHookTest
{
    @Test
    public void testShutdownHookNotRegisteredInitially()
    {
        assertThat(CdcBridgeFactory.isShutdownHookRegistered()).isFalse();
    }

    @Test
    public void testShutdownHookRegisteredOnce()
    {
        CdcBridgeFactory.maybeRegisterShutdownHook();
        assertThat(CdcBridgeFactory.isShutdownHookRegistered()).isTrue();

        // Second call is idempotent — the flag stays true and no exception is thrown
        CdcBridgeFactory.maybeRegisterShutdownHook();
        assertThat(CdcBridgeFactory.isShutdownHookRegistered()).isTrue();
    }
}
