joinUninterruptibly(thread, -42, MILLISECONDS);
    joinUninterruptibly(thread, LONG_DELAY_MS, MILLISECONDS);
    assertTimeNotPassed(stopwatch, LONG_DELAY_MS);
  }

  public void testJoinNoInterrupt() {
    TimedThread thread = TimedThread.createWithDelay(20);
    thread.joinSuccessfully();
    assertNotInterrupted();
  }

  public void testJoinTimeoutNoInterruptNotExpired() {