long time = System.currentTimeMillis();
        // UTime is seconds since epoch, so divide by 1000
        long unixTime = time / 1000L;

        // Mocking date for timezone consistency
        TimeZone original = TimeZone.getDefault();
        try {
            TimeZone.setDefault(TimeZone.getTimeZone("UTC"));
            ServerMessageBlock.writeUTime(unixTime * 1000L, buffer, 0);

   * edges().contains(endpoints)}.
   *
   * <p>Unlike the other {@code EndpointPair}-accepting methods, this method does not throw if the
   * endpoints are unordered; it simply returns false. This is for consistency with the behavior of
   * {@link Collection#contains(Object)} (which does not generally throw if the object cannot be
   * present in the collection), and the desire to have this method's behavior be compatible with

   * listeners, see {@link Futures}. For a simplified but general listener interface, see {@link
   * Futures#addCallback addCallback()}.
   *
   * <p>Memory consistency effects: Actions in a thread prior to adding a listener <a
   * href="https://docs.oracle.com/javase/specs/jls/se25/html/jls-17.html#jls-17.4.5">
   * <i>happen-before</i></a> its execution begins, perhaps in another thread.

            // Both non-null - should be same instance
            assertSame(first, second, "Second getSubject should return same cached instance as first");
        } else {
            fail("Inconsistent behavior: first=" + first + ", second=" + second);
        }

        // Third call should return the same cached Subject instance
        Subject third = auth.getSubject();

        assertEquals(message, exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_getType_immutability() {
        // Test that getType returns the same value consistently
        String type = "ApiKey";
        String message = "API key expired";
        InvalidAccessTokenException exception = new InvalidAccessTokenException(type, message);

public class UnsignedIntegerTest extends TestCase {
  private static final ImmutableSet<Integer> TEST_INTS;
  private static final ImmutableSet<Long> TEST_LONGS;

  private static int force32(int value) {
    // GWT doesn't consistently overflow values to make them 32-bit, so we need to force it.
    return value & 0xffffffff;
  }

  static {
    ImmutableSet.Builder<Integer> testIntsBuilder = ImmutableSet.builder();

    void testMultipleEncodeOperations() {
        long endOfFile = 0x1234567890ABCDEFL;
        FileEndOfFileInformation info = new FileEndOfFileInformation(endOfFile);

        // Encode multiple times to verify consistency
        byte[] buffer1 = new byte[8];
        byte[] buffer2 = new byte[8];

        int bytes1 = info.encode(buffer1, 0);
        int bytes2 = info.encode(buffer2, 0);

        assertEquals(8, bytes1);

  public static final UnsignedInteger ONE = fromIntBits(1);
  public static final UnsignedInteger MAX_VALUE = fromIntBits(-1);

  private final int value;

  private UnsignedInteger(int value) {
    // GWT doesn't consistently overflow values to make them 32-bit, so we need to force it.
    this.value = value & 0xffffffff;
  }

  /**
   * Returns an {@code UnsignedInteger} corresponding to a given bit representation. The argument is

            assertEquals(200L, SMBUtil.readInt8(smallBuffer, 8));
            assertEquals(1, SMBUtil.readInt4(smallBuffer, 16));
        }

        @ParameterizedTest
        @DisplayName("Should encode consistently with various flag values")
        @ValueSource(ints = { 0, 1, 2, 4, 16, 0xFF, 0xFFFF, 0xFFFFFF, 0x7FFFFFFF, -1 })
        void testEncodingWithVariousFlags(int flags) {
            lock = new Smb2Lock(1024L, 2048L, flags);

        for (Thread t : threads) {
            t.start();
        }

        // Wait for completion
        for (Thread t : threads) {
            t.join();
        }

        // Verify consistency
        SimpleCircuitBreaker.Statistics stats = breaker.getStatistics();
        assertEquals(successCount.get() + failureCount.get(), stats.totalSuccesses + stats.totalFailures + stats.rejectedCalls);
    }

    @Test