Interrupter(Thread threadToInterrupt) {
      this.threadToInterrupt = threadToInterrupt;
    }

    @Override
    public void run() {
      try {
        Thread.sleep(100);
      } catch (InterruptedException e) {
        throw new AssertionError();
      } finally {
        threadToInterrupt.interrupt();
      }
    }
  }

        directoryLeaseManager.updateDirectoryCache(directoryPath, files);

        assertTrue(entry.isComplete());
        assertFalse(entry.needsRefresh());

        // Wait for expiration
        Thread.sleep(100);

        assertTrue(entry.isExpired());
        assertTrue(entry.needsRefresh());

        // After expiration, cache should be treated as invalid by manager

    void testElapsedTime() throws InterruptedException {
        // Given
        exception = new SmbOperationException(SmbOperationException.ErrorCode.BUSY, "Server busy");

        // When
        Thread.sleep(100);

        // Then
        assertTrue(exception.getElapsedTime() >= 100);
        assertTrue(exception.getElapsedTime() < 200);
    }

    @Test

 * }
 *
 * <p>Even if your non-test code does not use finalization, you can use this class to test for
 * leaks, by ensuring that objects are no longer strongly referenced:
 *
 * {@snippet :
 * // Helper function keeps victim stack-unreachable.
 * private WeakReference<Foo> fooWeakRef() {
 *   Foo x = ....;
 *   WeakReference<Foo> weakRef = new WeakReference<>(x);
 *   // ... use x ...

        long initialAge = keyManager.getKeyAge(sessionId);
        assertTrue(initialAge >= 0 && initialAge < 100, "Initial age should be small");

        Thread.sleep(200);

        long laterAge = keyManager.getKeyAge(sessionId);
        assertTrue(laterAge >= 200, "Age should increase after delay");
    }

    @Test
    public void testKeyAgeNonExistent() {

 * }
 *
 * <p>Even if your non-test code does not use finalization, you can use this class to test for
 * leaks, by ensuring that objects are no longer strongly referenced:
 *
 * {@snippet :
 * // Helper function keeps victim stack-unreachable.
 * private WeakReference<Foo> fooWeakRef() {
 *   Foo x = ....;
 *   WeakReference<Foo> weakRef = new WeakReference<>(x);
 *   // ... use x ...

  private fun waitForConnectionShutdown(connection: RealConnection?) {
    if (connection!!.isHealthy(false)) {
      Thread.sleep(100L)
    }
    if (connection.isHealthy(false)) {
      Thread.sleep(2000L)
    }
    if (connection.isHealthy(false)) {
      throw TimeoutException("connection didn't shutdown within timeout")
    }
  }

  /**

  }

  /**
   * The stopwatch gathers events and presents them as strings. R0.6 means a delay of 0.6 seconds
   * caused by the (R)ateLimiter U1.0 means the (U)ser caused the stopwatch to sleep for a second.
   */
  static class FakeStopwatch extends SleepingStopwatch {
    long instant = 0L;
    final List<String> events = new ArrayList<>();

    @Override
    public long readMicros() {

  }

  /**
   * The stopwatch gathers events and presents them as strings. R0.6 means a delay of 0.6 seconds
   * caused by the (R)ateLimiter U1.0 means the (U)ser caused the stopwatch to sleep for a second.
   */
  static class FakeStopwatch extends SleepingStopwatch {
    long instant = 0L;
    final List<String> events = new ArrayList<>();

    @Override
    public long readMicros() {

                }
                if (logger.isDebugEnabled()) {
                    logger.debug("Waiting threads: {}", waitingThreadNames);
                }
                ThreadUtil.sleep(systemCpuCheckInterval);
                current = getSystemCpuPercent();
            }
        } finally {
            waitingThreadNames.remove(threadName);
        }
        return true;
    }