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ConcurrencyTest.java
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ConcurrencyTest.java
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/**
* Copyright (c) 2012, Ben Fortuna
* All rights reserved.
* <p>
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* <p>
* o Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* <p>
* o Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* <p>
* o Neither the name of Ben Fortuna nor the names of any other contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* <p>
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. 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 net.fortuna.ical4j.data;
import junit.framework.TestCase;
import net.fortuna.ical4j.model.Calendar;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.URISyntaxException;
import java.text.ParseException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicLong;
/**
* $Id: CalendarBuilderTest.java [Apr 5, 2004]
* <p/>
* Test case for iCalendarBuilder.
*
* @author benf
*/
public class ConcurrencyTest extends TestCase {
public void testConcurrency() throws Exception {
final AtomicLong size = new AtomicLong();
ExecutorService executorService = Executors.newFixedThreadPool(100);
for (int i = 0; i < 100; i++) {
executorService.execute(new Runnable() {
@Override
public void run() {
try(FileInputStream fis = new FileInputStream("src/test/resources/samples/valid/lotr.ics");) {
Calendar calendar = new CalendarBuilder().build(fis);
Calendar cal = new Calendar(calendar);
size.addAndGet(cal.getComponents().size());
} catch (IOException | ParserException | URISyntaxException | ParseException e) {
e.printStackTrace();
}
}
});
}
executorService.shutdown();
executorService.awaitTermination(10, TimeUnit.MINUTES);
assertEquals(3700, size.longValue());
}
public void testConcurrencySingleInstanceOfCalendar() throws Exception {
final Calendar calendar;
try(FileInputStream fis = new FileInputStream("src/test/resources/samples/valid/lotr.ics");) {
calendar = new CalendarBuilder().build(fis);
} catch (IOException | ParserException e) {
throw new RuntimeException(e.getMessage(), e);
}
final AtomicLong size = new AtomicLong();
ExecutorService executorService = Executors.newFixedThreadPool(100);
for (int i = 0; i < 100; i++) {
executorService.execute(new Runnable() {
@Override
public void run() {
try {
Calendar cal = new Calendar(calendar);
size.addAndGet(cal.getComponents().size());
} catch (ParseException | URISyntaxException e) {
e.printStackTrace();
}
}
});
}
executorService.shutdown();
executorService.awaitTermination(10, TimeUnit.MINUTES);
assertEquals(3700, size.longValue());
}
}