model/src/test/java/org/apache/commons/graph/model/MultiThreadedTestRunner.java

package org.apache.commons.graph.model;

import java.util.ArrayList;
import java.util.List;

/*
 * 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.
 */

/**
 * Simple utility class. 
 * It is used for executing multi-thread test case.
 */
public class MultiThreadedTestRunner
{

    final private List<Thread> th;

    long maxWait = 60L * 60L * 1000;

    final private List<Throwable> exeptions;

    public MultiThreadedTestRunner( TestRunner[] runnables )
    {
        th = new ArrayList<Thread>();
        exeptions = new ArrayList<Throwable>();
        for ( int i = 0; i < runnables.length; i++ )
        {
            runnables[i].setTestRunner( this );
            th.add( new Thread( runnables[i] ) );
        }
    }

    public void runRunnables() throws Throwable
    {
        for ( Thread t : th )
        {
            t.start();
        }

        for ( Thread t : th )
        {
            t.join( maxWait );
        }

        if ( this.exeptions.size() > 0 )
        {
            throw this.exeptions.get( 0 );
        }
    }

    /**
     * @param e
     */
    public void addException( Throwable e )
    {
        exeptions.add( e );
    }

}