}

    public void test_nestedCause() {
        // Test with nested exceptions
        RuntimeException rootCause = new RuntimeException("Root cause");
        ParseException parseException = new ParseException("Parse error");
        parseException.initCause(rootCause);
        QueryParseException queryParseException = new QueryParseException(parseException);

        assertEquals(parseException, queryParseException.getCause());

        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
    public void test_update_multipleCalls() {
        TestAuthenticationChain chain = new TestAuthenticationChain();

    // 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");

    }

    public void test_toSlackMessage_withLongContent() {
        MockSMailPostingDiscloser discloser = new MockSMailPostingDiscloser();

        StringBuilder longSubject = new StringBuilder();
        StringBuilder longContent = new StringBuilder();
        for (int i = 0; i < 100; i++) {
            longSubject.append("Subject Line ").append(i).append(" ");

        NtlmPasswordAuthenticator auth1 = new NtlmPasswordAuthenticator("testuser", "");
        assertEquals("", auth1.getPassword());
        assertNotNull(auth1.getPasswordAsCharArray());
        assertEquals(0, auth1.getPasswordAsCharArray().length);

        // Test with empty char[] password
        NtlmPasswordAuthenticator auth2 = new NtlmPasswordAuthenticator("testuser", new char[0]);
        assertEquals("", auth2.getPassword());

        // 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);

        // Given
        Smb2TreeConnectRequest req = new Smb2TreeConnectRequest(mockConfig, path);
        byte[] buffer = new byte[1024];

        // Encode to set headerStart
        req.encode(buffer, 0);

        // Then
        byte[] pathBytes = path.getBytes(StandardCharsets.UTF_16LE);

        // Verify path is written correctly at body + 8
        byte[] actualPath = new byte[pathBytes.length];

        // Write completely empty file
        try (java.io.FileWriter fw = new java.io.FileWriter(testFile)) {
            // Write nothing
        }

        // Create a new CharMappingFile instance to ensure clean state
        CharMappingFile emptyMappingFile = new CharMappingFile("empty_test", testFile.getAbsolutePath(), new Date());
        emptyMappingFile.manager(dictionaryManager);

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        writeLittleEndianInt(baos, PacSignature.KERB_CHECKSUM_HMAC_MD5);
        // Write only 10 bytes instead of 16
        baos.write(new byte[10]);
        byte[] data = baos.toByteArray();

        // Verify that PACDecodingException is thrown
        assertThrows(PACDecodingException.class, () -> {
            new PacSignature(data);
        });
    }

        // Test OK status
        ApiResult okResult = new ApiResult.ApiResponse().status(Status.OK).result();
        assertNotNull(okResult);

        // Test BAD_REQUEST status
        ApiResult badRequestResult = new ApiResult.ApiResponse().status(Status.BAD_REQUEST).result();
        assertNotNull(badRequestResult);

        // Test UNAUTHORIZED status