@Test
public void testReuseLatch() throws Exception {
final ReusableLatch latch = new ReusableLatch(5);
for (int i = 0; i < 5; i++) {
latch.countDown();
}
latch.countUp();
class ThreadWait extends Thread {
private volatile boolean waiting = false;
private volatile Exception e;
private final CountDownLatch readyLatch = new CountDownLatch(1);
@Override
public void run() {
waiting = true;
readyLatch.countDown();
try {
if (!latch.await(1000)) {
UnitTestLogger.LOGGER.error("Latch timed out!", new Exception("trace"));
}
} catch (Exception e) {
UnitTestLogger.LOGGER.error(e);
this.e = e;
}
waiting = false;
}
}
ThreadWait t = new ThreadWait();
t.start();
t.readyLatch.await();
Assert.assertEquals(true, t.waiting);
latch.countDown();
t.join();
Assert.assertEquals(false, t.waiting);
Assert.assertNull(t.e);
latch.countUp();
t = new ThreadWait();
t.start();
t.readyLatch.await();
Assert.assertEquals(true, t.waiting);
latch.countDown();
t.join();
Assert.assertEquals(false, t.waiting);
Assert.assertNull(t.e);
Assert.assertTrue(latch.await(1000));
Assert.assertEquals(0, latch.getCount());
latch.countDown();
Assert.assertEquals(0, latch.getCount());
}
