/*
 * (c) Copyright 2009 by Volker Bergmann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, is permitted under the terms of the
 * GNU General Public License (GPL).
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
 * REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
 * HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

package org.databene.benerator.primitive;

import static org.junit.Assert.assertEquals;

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

import org.databene.benerator.test.GeneratorClassTest;
import org.junit.Test;

/**
 * Tests the {@link IncrementalIdGenerator}.<br/><br/>
 * Created: 14.11.2009 07:23:34
 * @since 0.6.0
 * @author Volker Bergmann
 */
public class IncrementalIdGeneratorTest extends GeneratorClassTest {

	public IncrementalIdGeneratorTest() {
	    super(IncrementalIdGenerator.class);
    }

	@Test
	public void testLifeCycle() {
		IncrementalIdGenerator generator = new IncrementalIdGenerator();
		generator.init(context);
		assertEquals(1L, generator.generate().longValue());
		generator.reset();
		assertEquals(2L, generator.generate().longValue());
	}
	
	@Test
	public void testMultiThreading() throws Exception {
		final IncrementGenerator generator = new IncrementGenerator(0);
		generator.init(context);
		ExecutorService service = Executors.newCachedThreadPool();
		Runnable runner = new Runnable() {
			public void run() {
				for (int i = 0; i < 500; i++)
					generator.generate();
            }
		};
		for (int i = 0; i < 20; i++)
			service.execute(runner);
		service.shutdown();
		service.awaitTermination(2, TimeUnit.SECONDS);
		assertEquals(10000L, generator.cursor.get());
	}
	
}