// give the third get a chance to run; it is okay for this to be racy
    // as the end result should be the same either way
    fourthSignal.await();
    Thread.yield();

    // let computation finish
    computeSignal.countDown();
    doneSignal.await();

    assertTrue(callCount.get() == 1);
    assertEquals("barfoo", result.get(0));
    assertEquals("barfoo", result.get(1));

    // give the third get a chance to run; it is okay for this to be racy
    // as the end result should be the same either way
    fourthSignal.await();
    Thread.yield();

    // let computation finish
    computeSignal.countDown();
    doneSignal.await();

    assertTrue(callCount.get() == 1);
    assertEquals("barfoo", result.get(0));
    assertEquals("barfoo", result.get(1));