TestAuthenticationChain chain = new TestAuthenticationChain();
        chain.updateThrowsException = false;

        chain.update(null);

        assertEquals(1, chain.updateCalls.size());
        assertNull(chain.updateCalls.get(0));
    }

    // Test update with multiple calls
    @Test
    public void test_update_multipleCalls() {
        TestAuthenticationChain chain = new TestAuthenticationChain();

        final long original = 0x1122334455667788L;
        NdrHyper hyper = new NdrHyper(original);
        // Create buffer with extra space for alignment
        NdrBuffer buf = new NdrBuffer(new byte[16], 0);
        hyper.encode(buf);
        // Reset buffer position for decoding
        buf.reset();
        NdrHyper decoded = new NdrHyper(0);
        decoded.decode(buf);

        // Setup
        final String message = "Test SSO error message";
        final Exception cause = new RuntimeException("Test cause");
        final VaMessenger<FessMessages> messageCode = messages -> messages.addErrorsSsoLoginError(UserMessages.GLOBAL_PROPERTY_KEY);

        // Execute
        final SsoMessageException exception = new SsoMessageException(messageCode, message, cause);

        // Verify
        assertNotNull(exception);

        searchHelper = new SearchHelper();
        setupMockComponents();
    }

    private void setupMockComponents() {
        ComponentUtil.setFessConfig(new MockFessConfig());
        ComponentUtil.register(new MockSystemHelper(), "systemHelper");
    }

    @Test
    public void test_serializeParameters() {
        RequestParameter[] params = new RequestParameter[] { new RequestParameter("q", new String[] { "test" }),

    @Test
    public void test_insert_multipleChains() {
        User user = createTestUser("testuser");
        TestAuthenticationChain chain1 = new TestAuthenticationChain();
        TestAuthenticationChain chain2 = new TestAuthenticationChain();
        TestAuthenticationChain chain3 = new TestAuthenticationChain();

        authenticationManager.addChain(chain1);
        authenticationManager.addChain(chain2);

    // Test custom properties
    public void xtest_customProperties() {
        // Create custom FessEnv with custom properties
        FessEnv.SimpleImpl customEnv = new FessEnv.SimpleImpl() {
            protected Properties prepareProperties() {
                Properties props = new Properties();
                props.setProperty(FessEnv.lasta_di_SMART_DEPLOY_MODE, "cool");
                props.setProperty(FessEnv.DEVELOPMENT_HERE, "false");

    @Override
    public Set<K> keySet() {
      return new StandardKeySet();
    }

    @Override
    public Collection<V> values() {
      return new StandardValues();
    }

    @Override
    public String toString() {
      return standardToString();
    }

    @Override
    public Set<Entry<K, V>> entrySet() {
      return new StandardEntrySet() {
        @Override

    }

    @Test
    public void testKeyIsolation() {
        String sessionId1 = "session-1";
        String sessionId2 = "session-2";

        byte[] key1 = new byte[16];
        byte[] key2 = new byte[16];
        new SecureRandom().nextBytes(key1);
        new SecureRandom().nextBytes(key2);

        keyManager.storeSessionKey(sessionId1, key1, "AES");
        keyManager.storeSessionKey(sessionId2, key2, "AES");

            )
        ),
        new LicenseMatcher("MPL-1.1", true, false, Pattern.compile("Mozilla Public License.*Version 1.1", Pattern.DOTALL)),
        new LicenseMatcher("MPL-2.0", true, false, Pattern.compile("Mozilla\\s*Public\\s*License\\s*Version\\s*2\\.0", Pattern.DOTALL)),
        new LicenseMatcher("XZ", false, false, Pattern.compile("Licensing of XZ for Java", Pattern.DOTALL)),

    @BeforeEach
    public void setUp() {
        try {
            BaseConfiguration config = new BaseConfiguration(false);
            mockContext = new BaseContext(config);
            response = new SmbComNegotiateResponse(mockContext);
        } catch (Exception e) {
            throw new RuntimeException("Failed to set up test", e);
        }
    }

    @Test
    public void testConstructor() {