/*
 * Copyright 2017 Pavel Fatin, https://pavelfatin.com
 *
 * 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.
 */

package com.pavelfatin.typometer;

import org.junit.runners.Parameterized;
import org.junit.runners.model.RunnerScheduler;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;

public class Parallelized extends Parameterized {
    public Parallelized(Class<?> klass) throws Throwable {
        super(klass);

        setScheduler(new RunnerScheduler() {
            private final ExecutorService service = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());

            public void schedule(Runnable childStatement) {
                service.submit(childStatement);
            }

            public void finished() {
                try {
                    service.shutdown();
                    service.awaitTermination(5, TimeUnit.MINUTES);
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
        });
    }
}