.body("data", notNullValue());
    }

    @Test
    public void testGetFavorites_noQueryId() {
        // Test without queryId - should still work but return empty or error
        given().contentType("application/json").when().get("/api/v1/favorites").then().statusCode(200);
    }

    @Test
    public void testSetFavorite_ok() {

        // or throw an exception. Test the actual behavior.
        queryFieldConfig.highlightedFields(stream -> {
            // If it doesn't throw NPE, it should provide an empty stream
            assertEquals(0, stream.count());
        });
    }

    @Test
    public void test_init_withInvalidDefaultFields() {
        // Test with invalid default field formats

            break;
        default:
            break;
        }
        return OptionalEntity.empty();
    }

    /**
     * Creates a RelatedQuery entity from the provided form data.
     *
     * @param form the form containing the related query data
     * @return optional entity containing the related query data, or empty if creation fails
     */

        final String jspType = "view";
        final File jspFile = getJspFile(form.fileName, jspType);

        if (form.content == null) {
            form.content = StringUtil.EMPTY;
        }

        validate(form, messages -> {}, () -> asEditHtml(form));
        verifyToken(() -> asEditHtml(form));
        try {

    public void test_getJavaVersion_edgeCases() {
        // Test with null java.version property
        System.clearProperty("java.version");
        assertEquals(8, JvmUtil.getJavaVersion());

        // Test with empty string
        System.setProperty("java.version", "");
        try {
            JvmUtil.getJavaVersion();
            fail("Should throw NumberFormatException");
        } catch (NumberFormatException e) {

     * Uses ParamMap for automatic case format conversion between camelCase and snake_case.
     */
    protected final Map<String, Object> params;

    /**
     * Creates a new empty DataStoreParams instance.
     * Initializes the internal parameter map with a ParamMap wrapper.
     */
    public DataStoreParams() {
        params = new ParamMap<>(new HashMap<>());
    }

    /**

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

        try {
            crawler.sendMail(infoMap);
        } catch (Exception e) {
            fail("Should not throw exception with empty map: " + e.getMessage());
        }
    }

    // Test getValueFromMap private method via reflection
    @Test
    public void test_getValueFromMap() throws Exception {

            public String getIndexFieldSegment() {
                return "segment";
            }

            @Override
            public String get(String key) {
                // Return empty string instead of null
                return "";
            }
        };

        ComponentUtil.setFessConfig(fessConfig);

        // Initialize QueryFieldConfig

        assertEquals(200, response.getStatusCode());
        String body = response.getBody().asString();
        assertTrue(body != null && body.length() > 0, "Response body should not be empty");
        // NDJSON format: each line is a JSON object
        String[] lines = body.trim().split("\n");
        assertTrue(lines.length > 0, "Should have at least one line in NDJSON response");
    }

    @Test

                            } else {
                                boolean empty = callback.deleteUrlList.isEmpty();
                                // Just verify the check doesn't throw exception
                                if (!empty) {
                                    assertTrue(callback.deleteUrlList.size() > 0);
                                }