assertTrue(events.get(0).getThrowable().contains("RuntimeException"));
        assertTrue(events.get(0).getThrowable().contains("test exception"));
        assertTrue(events.get(0).getThrowable().length() <= 500);
    }

    @Test
    public void test_append_nullLoggerName() {
        final LogEvent event = createLogEvent(Level.ERROR, null, "null logger message");
        appender.append(event);

        requestBody.put("max_access_count", 10);
        requestBody.put("num_of_thread", 1);
        requestBody.put("interval_time", 0);
        requestBody.put("boost", 100);
        requestBody.put("permissions", "{role}guest");
        requestBody.put("available", true);
        requestBody.put("sort_order", 0);
        createFileConfig(requestBody);
    }

        if (valueSeparator.length() > 0) {
            final String[] values = rolesStr.split(valueSeparator);
            if (maxAge > 0) {
                try {
                    final long time = getCurrentTime() / 1000 - Long.parseLong(values[0]);
                    if (time > maxAge || time < 0) {
                        if (logger.isDebugEnabled()) {
                            logger.debug("role info is expired: {} > {}", time, maxAge);

            assertTrue("Should find custom thread in dump", customThreadFound.get() > 0);

        } finally {
            latch.countDown();
            customThread.join(1000); // Wait up to 1 second for thread to finish
        }
    }

    @Test
    public void test_writeThreadDump_fileContent() throws IOException {

            public int getNumberOfInFlightFetch() {
                return 0;
            }

            @Override
            public double getActiveShardsPercent() {
                return 100.0;
            }
        };
    }

    // Helper method to create test FessConfig
    private FessConfig createTestFessConfig() {
        return new TestFessConfig();
    }

        final FessConfig fessConfig = ComponentUtil.getFessConfig();

        cmdList.add(fessConfig.getJavaCommandPath());

        // -cp
        cmdList.add("-cp");
        final StringBuilder buf = new StringBuilder(100);
        ResourceUtil.getOverrideConfPath().ifPresent(p -> {
            buf.append(p);
            buf.append(cpSeparator);
        });
        final String confPath = System.getProperty(Constants.FESS_CONF_PATH);

        final Extractor extractor = getExtractor(responseData);
        final String mimeType = responseData.getMimeType();
        final StringBuilder contentMetaBuf = new StringBuilder(1000);
        final Map<String, Object> dataMap = new HashMap<>();
        final Map<String, Object> metaDataMap = new HashMap<>();
        String content;
        try (final InputStream in = responseData.getResponseBody()) {

            final StringBuilder buf = new StringBuilder(100);
            return ".*" + appendFileterPath(buf, escape(v)) + ".*";
        }
        if (s.startsWith(REGEXP_IGNORE_CASE)) {
            final String v = s.substring(REGEXP_IGNORE_CASE.length());
            final StringBuilder buf = new StringBuilder(100);
            buf.append("(?i)");
            return appendFileterPath(buf, unescape(v));

        List<LogNotificationEvent> events = new ArrayList<>();
        events.add(new LogNotificationEvent(base, "ERROR", "org.test.A", "first", null));
        events.add(new LogNotificationEvent(base + 1000, "WARN", "org.test.B", "second", null));
        events.add(new LogNotificationEvent(base + 2000, "ERROR", "org.test.C", "third", null));

        String details = testableJob.testFormatDetails(events);

        }

        private static String summarize(String s) {
            if (s == null) return "null";
            String t = s.replace("\n", "\\n");
            if (t.length() > 500) {
                return t.substring(0, 500) + "...(truncated)";
            }
            return t;
        }
    }

    private static ExecResult exec(String[] command) throws IOException, InterruptedException, ExecutionException {