/*******************************************************************************
 * Copyright (c) 2010-present Sonatype, Inc.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Stuart McCulloch (Sonatype, Inc.) - initial API and implementation
 *******************************************************************************/
package org.eclipse.sisu.space;

import java.net.URL;
import java.util.concurrent.atomic.AtomicInteger;

import javax.enterprise.inject.Typed;
import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Provider;

import com.google.inject.Guice;

import junit.framework.TestCase;

public class QualifiedProviderTest
    extends TestCase
{
    @Named( "jsr330-counting" )
    static class JSR330CountingThreadProvider
        implements javax.inject.Provider<Thread>
    {
        @Inject
        @Named( "counting" )
        Runnable runnable;

        static int count;

        public Thread get()
        {
            count++;
            return new Thread( runnable );
        }
    }

    @Named( "guice-counting" )
    static class GuiceCountingThreadProvider
        implements com.google.inject.Provider<Thread>
    {
        @Inject
        @Named( "counting" )
        Runnable runnable;

        static int count;

        public Thread get()
        {
            count++;
            return new Thread( runnable );
        }
    }

    @Named( "counting" )
    @Typed
    static class CountingRunnable
        implements Runnable
    {
        static final AtomicInteger count = new AtomicInteger();

        public void run()
        {
            count.incrementAndGet();
        }
    }

    @Inject
    @Named( "jsr330-counting" )
    Provider<Thread> jsr330ThreadProvider;

    @Inject
    @Named( "guice-counting" )
    Provider<Thread> guiceThreadProvider;

    public void testQualifiedProvider()
    {
        final ClassSpace space =
            new URLClassSpace( getClass().getClassLoader(), new URL[] { getClass().getResource( "" ) } );
        Guice.createInjector( new SpaceModule( space ) ).injectMembers( this );

        final Thread[] ts = new Thread[8];

        assertEquals( 0, JSR330CountingThreadProvider.count );
        assertEquals( 0, GuiceCountingThreadProvider.count );

        for ( int i = 0; i < ts.length; i++ )
        {
            ts[i] = i % 2 == 0 ? jsr330ThreadProvider.get() : guiceThreadProvider.get();
        }

        assertEquals( 4, JSR330CountingThreadProvider.count );
        assertEquals( 4, GuiceCountingThreadProvider.count );

        assertEquals( 0, CountingRunnable.count.get() );

        for ( final Thread t : ts )
        {
            t.start();
        }

        for ( final Thread t : ts )
        {
            try
            {
                t.join();
            }
            catch ( final InterruptedException e )
            {
                e.printStackTrace();
            }
        }

        assertEquals( 8, CountingRunnable.count.get() );
    }
}