assertNotNull(result);
        assertFalse(result.isPresent());
    }

    public void test_ofNullable_withMap() {
        Map<String, Object> testValue = new HashMap<>();
        testValue.put("key1", "value1");
        testValue.put("key2", 42);

        OptionalEntity<Map<String, Object>> result = OptionalUtil.ofNullable(testValue);

        assertNotNull(result);

        try {
            // Test multiple value changes
            String[] testValues = { "http://localhost:9200", "https://elasticsearch.example.com", "http://127.0.0.1:9201",
                    "https://search.domain.com:443" };

            for (String testValue : testValues) {
                System.setProperty(Constants.FESS_SEARCH_ENGINE_HTTP_ADDRESS, testValue);
                String result = SystemUtil.getSearchEngineHttpAddress();

        try {
            WebApiUtil.setObject("testKey", "testValue");
        } catch (Exception e) {
            fail("setObject should handle missing request gracefully: " + e.getMessage());
        }
    }

    public void test_setObject_withNullName() {
        // Test setObject with null name
        try {
            WebApiUtil.setObject(null, "testValue");
        } catch (Exception e) {

    public void test_inheritedMethods_areProperlyDelegated() {
        final String customPath = "/api/v1/test";
        final String testHeader = "X-Test-Header";
        final String testHeaderValue = "TestValue";

        mockRequest.addHeader(testHeader, testHeaderValue);
        mockRequest.setMethod("POST");
        mockRequest.setRequestURI("/test/uri");

        }
    }

    // Test sendMail method
    public void test_sendMail_withNotificationDisabled() {
        Map<String, String> infoMap = new HashMap<>();
        infoMap.put("TestKey", "TestValue");

        // Should not throw exception when notification is disabled
        try {
            crawler.sendMail(infoMap);
        } catch (Exception e) {

    // Test getTimeAdjustTimeMillis string values
    public void test_getTimeAdjustTimeMillis_stringValues() {
        // Test various string formats
        String[] testValues = { "0", "1000", "-1000", "999999999", "-999999999", "1", "-1" };

        for (String value : testValues) {
            FessConfig testConfig = new FessConfig.SimpleImpl() {
                private static final long serialVersionUID = 1L;

                @Override

    }

    public void test_encode_decode_symmetry() {
        String[] testValues =
                { "guest", "{user}guest", "{group}guest", "{role}guest", "(deny){user}guest", "(deny){group}guest", "(deny){role}guest" };

        for (String value : testValues) {
            String encoded = permissionHelper.encode(value);
            if (encoded != null) {

            public int getLtrWindowSize() {
                return testWindowSize;
            }
        });

        Map<String, Object> params = new HashMap<>();
        params.put("string_param", "test_value");
        params.put("int_param", 42);
        params.put("double_param", 3.14);
        params.put("boolean_param", true);

        Map<String, String> nestedMap = new HashMap<>();

        boolean[] pbCallExecuted = { false };

        Consumer<ProcessBuilder> pbCall = pb -> {
            pb.redirectErrorStream(true);
            pb.environment().put("TEST_VAR", "test_value");
            pbCallExecuted[0] = true;
        };

        try {
            JobProcess jobProcess = processHelper.startProcess(sessionId, cmdList, pbCall);
            assertNotNull(jobProcess);

        assertTrue(localLogMsg.get().contains("\"event.dataset\":\"test-dataset\""));
    }

    public void test_setEnvMap() {
        Map<String, String> testEnv = new HashMap<>();
        testEnv.put("TEST_KEY", "TEST_VALUE");
        activityHelper.setEnvMap(testEnv);
        assertEquals(testEnv, activityHelper.getEnvMap());
    }

    public void test_getEnvMap_withoutCustomMap() {
        activityHelper.setEnvMap(null);