}
@Test
public void doNotBlock() {
final int delay = 10000;
ConnectionStub connection = spy(new ConnectionStub(delay, 2));
QueuedApnsService queued =
new QueuedApnsService(new ApnsServiceImpl(connection, null));
queued.start();
long time1 = System.currentTimeMillis();
queued.push(notification);
queued.push(notification);
long time2 = System.currentTimeMillis();
assertTrue("queued.push() blocks", (time2 - time1) < delay);
connection.interrupt();
connection.semaphore.acquireUninterruptibly();
verify(connection, times(2)).sendMessage(notification);
queued.stop();
}