systemHelper = new SystemHelper() {
            @Override
            public Date getCurrentTime() {
                return new Date(1609459200000L); // 2021-01-01 00:00:00 UTC
            }
        };
        ComponentUtil.register(systemHelper, "systemHelper");
    }

    @Override
    public void tearDown() throws Exception {
        super.tearDown();
    }

        assertEquals(currentTime, searchRenderData.getRequestedTime());

        // Test with specific timestamp
        long timestamp = 1609459200000L; // 2021-01-01 00:00:00 UTC
        searchRenderData.setRequestedTime(timestamp);
        assertEquals(timestamp, searchRenderData.getRequestedTime());

        // Test with negative value
        searchRenderData.setRequestedTime(-1000L);

            buf.append("null");
        } else if (value instanceof LocalDateTime) {
            final String format =
                    ((LocalDateTime) value).atZone(ZoneId.systemDefault()).withZoneSameInstant(ZoneId.of("UTC")).format(ISO_8601_FORMATTER);
            buf.append('"').append(StringEscapeUtils.escapeJson(format)).append('"');
        } else if (value instanceof String[]) {
            final String json = Arrays.stream((String[]) value)

            return new Date(time);
        } catch (final Exception e) {
            return null;
        }
    }

    /**
     * Formats a Date object to ISO datetime string format in UTC timezone.
     *
     * @param date the date to format
     * @return formatted date string, or empty string if date is null
     */
    public static String formatDate(final Date date) {
        if (date == null) {

    public void init() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initialize {}", this.getClass().getSimpleName());
        }
        final Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
        cal.set(2027, 3 - 1, 1); // EOL Date
        eolTime = cal.getTimeInMillis();
        if (isEoled()) {
            logger.error("Your system is out of support. See https://fess.codelibs.org/eol.html");