limiter.acquire(Integer.MAX_VALUE / 4);
    limiter.acquire(Integer.MAX_VALUE / 2);
    limiter.acquire(Integer.MAX_VALUE);
    assertEvents("R0.00", "R0.00", "R0.00");

    limiter.setRate(1.0);
    limiter.acquire();
    limiter.acquire();
    limiter.acquire();
    assertEvents("R0.00", "R1.00", "R1.00");

    limiter.acquire(Integer.MAX_VALUE / 4);
    limiter.acquire(Integer.MAX_VALUE / 2);
    limiter.acquire(Integer.MAX_VALUE);
    assertEvents("R0.00", "R0.00", "R0.00");

    limiter.setRate(1.0);
    limiter.acquire();
    limiter.acquire();
    limiter.acquire();
    assertEvents("R0.00", "R1.00", "R1.00");

     * @return true if attempt is allowed, false if rate limited
     * @throws SmbException if account is locked out
     */
    public boolean checkAttempt(String username, String sourceIp) throws SmbException {
        if (closed.get()) {
            throw new IllegalStateException("Rate limiter is closed");
        }

        // Check global rate limit
        if (!checkGlobalRateLimit()) {

            // The rate limiter should still be functional after concurrent access
            assertTrue(concurrentLimiter.checkAttempt("finaluser", "192.168.3.1"),
                    "Rate limiter should still be functional after concurrent operations");

            // Verify that the rate limiter tracked some activity

 *
 * Performance optimizations:
 * - Uses ConcurrentLinkedQueue for O(1) operations
 * - Lock-free operations for better concurrency
 * - Proper buffer validation and limits
 */
public class BufferCache {

    /**
     * Private constructor to prevent instantiation of this utility class.
     */
    private BufferCache() {
        // Utility class - not instantiable
    }

     *
     * @param args command line arguments: [-t numThreads] [-i numIter] [-d delay] url
     * @throws Exception if an error occurs during test execution
     */
    public static void main(final String[] args) throws Exception {
        if (args.length < 1) {
            logger.error("usage: TestLocking [-t <numThreads>] [-i <numIter>] [-d <delay>] url");
            System.exit(1);
        }

        }

        // Reasonable upper limit (1TB)
        long maxSize = 1099511627776L;
        if (size > maxSize) {
            failedValidations.incrementAndGet();
            log.warn("File size exceeds reasonable limit: {} > {}", size, maxSize);
            throw new SmbException("File size exceeds limit: " + size);
        }
    }

    /**

        // Set custom values
        t.numThreads = 5;
        t.numIter = 10;
        t.delay = 250L;
        t.url = "smb://custom/path/file.txt";

        // Verify values are set
        assertEquals(5, t.numThreads, "numThreads should be configurable");
        assertEquals(10, t.numIter, "numIter should be configurable");
        assertEquals(250L, t.delay, "delay should be configurable");

        assertEquals("日本語,中文,한국어", result);
    }

    @ParameterizedTest
    @DisplayName("Should handle various delimiter types")
    @MethodSource("provideDelimiters")
    void testJoinWithVariousDelimiters(String delimiter, String expected) {
        String result = StringUtil.join(delimiter, "A", "B", "C");
        assertEquals(expected, result);
    }

    private static Stream<Arguments> provideDelimiters() {

    Iterable<String> iterable = newArrayList("foo", "bar", "baz");
    Iterable<String> limited = Iterables.limit(iterable, 2);

    List<String> expected = ImmutableList.of("foo", "bar");
    List<String> actual = newArrayList(limited);
    assertEquals(expected, actual);
    assertCanIterateAgain(limited);
    assertEquals("[foo, bar]", limited.toString());
  }

  public void testLimit_illegalArgument() {