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TimeoutTestsPlain.java
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TimeoutTestsPlain.java
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package plain_vs_mtc;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.TimeUnit;
import static org.junit.Assert.fail;
import static org.junit.Assert.assertFalse;
import org.junit.Before;
import org.junit.Test;
import org.junit.After;
/**
* Timed offer times out if ArrayBlockingQueue is full and elements are not taken
*/
public class TimeoutTestsPlain
{
/* NOTES
* - Uses freezeClock to prevent clock from advancing
* - This also guarantees that interrupt is on second offer
*/
// Plain Version
volatile boolean threadFailed;
public void threadShouldThrow()
{
threadFailed = true;
fail("should throw exception");
}
public void threadAssertFalse(boolean b)
{
if (b)
{
threadFailed = true;
assertFalse(b);
}
}
@Before
public void setUp() throws Exception
{
threadFailed = false;
}
@Test
public void testTimedOffer()
{
final ArrayBlockingQueue<Object> q = new ArrayBlockingQueue<Object>(2);
Thread t = new Thread(new Runnable()
{
public void run()
{
try
{
q.put(new Object());
q.put(new Object());
threadAssertFalse(q.offer(new Object(), 25, TimeUnit.MILLISECONDS));
q.offer(new Object(), 2500, TimeUnit.MILLISECONDS);
threadShouldThrow();
} catch (InterruptedException success)
{
}
}
});
try
{
t.start();
Thread.sleep(50);
t.interrupt();
t.join();
} catch (Exception e)
{
fail("Unexpected exception");
}
}
@After
public void tearDown() throws Exception
{
assertFalse(threadFailed);
}
}