/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.kernel.impl.scheduler;

import static org.assertj.core.api.Assertions.assertThat;
import static org.neo4j.scheduler.JobMonitoringParams.NOT_MONITORED;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.atomic.AtomicBoolean;
import org.junit.jupiter.api.Test;
import org.neo4j.scheduler.Group;
import org.neo4j.scheduler.JobHandle;
import org.neo4j.time.Clocks;

class ThreadPoolManagerTest {
    @Test
    void shouldDefaultToGroupParallelism() throws ExecutionException, InterruptedException {
        // given
        ThreadPoolManager manager = new ThreadPoolManager(
                new ThreadGroup("parent"), Clocks.nanoClock(), new FailedJobRunsStore(0), () -> 1L);
        AtomicBoolean hasBeenRun = new AtomicBoolean();

        // when
        ThreadPool pool = manager.getThreadPool(Group.PAGE_CACHE_PRE_FETCHER, null);
        JobHandle<?> handle = pool.submit(NOT_MONITORED, () -> hasBeenRun.set(true));

        // then
        handle.waitTermination();
        assertThat(hasBeenRun.get()).isTrue();
    }
}
