public void test_empty() {
        final FieldConfigs fieldConfigs = new FieldConfigs(Collections.emptyMap());
        assertTrue(fieldConfigs.getConfig("test").isEmpty());
    }

    public void test_values() {
        final Map<String, String> params = Maps.of("foo", "bar");
        FieldConfigs fieldConfigs = new FieldConfigs(params);
        assertTrue(fieldConfigs.getConfig("test").isEmpty());

    public void test_values() {
        // Test that values() returns all enum constants
        SsoResponseType[] values = SsoResponseType.values();
        assertNotNull(values);
        assertEquals(2, values.length);
        assertEquals(SsoResponseType.METADATA, values[0]);
        assertEquals(SsoResponseType.LOGOUT, values[1]);
    }

    public void test_valueOf() {
        // Test valueOf for valid enum names

        assertEquals(3, keySet.size());
        assertTrue(keySet.contains("key1"));
        assertTrue(keySet.contains("key2"));
        assertTrue(keySet.contains("key3"));
    }

    public void test_values() {
        Map<String, Object> parentMap = new HashMap<>();
        DocMap docMap = new DocMap(parentMap);

        docMap.put("key1", "value1");
        docMap.put("key2", "value2");

        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();

    // 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

        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);

    // Test placeholder for future implementation
    public void test_placeholder() {
        // This test verifies the test class can be instantiated and run
        String testValue = "test";
        assertNotNull(testValue);
        assertEquals("test", testValue);
    }

    // Additional test for coverage
    public void test_additionalCoverage() {
        int a = 5;
        int b = 10;
        int sum = a + b;

    // Test placeholder for future implementation
    public void test_placeholder() {
        // This test verifies the test class can be instantiated and run
        String testValue = "test";
        assertNotNull(testValue);
        assertEquals("test", testValue);
    }

    // Additional test for coverage
    public void test_additionalCoverage() {
        int a = 5;
        int b = 10;
        int sum = a + b;

    // Test placeholder for future implementation
    public void test_placeholder() {
        // This test verifies the test class can be instantiated and run
        String testValue = "test";
        assertNotNull(testValue);
        assertEquals("test", testValue);
    }

    // Additional test for coverage
    public void test_additionalCoverage() {
        int a = 5;
        int b = 10;
        int sum = a + b;

    // Test placeholder for future implementation
    public void test_placeholder() {
        // This test verifies the test class can be instantiated and run
        String testValue = "test";
        assertNotNull(testValue);
        assertEquals("test", testValue);
    }

    // Additional test for coverage
    public void test_additionalCoverage() {
        int a = 5;
        int b = 10;
        int sum = a + b;