assertEquals(complexMessageCode, exception.getMessageCode());
    }

    @Test
    public void test_causeChainPropagation() {
        // Setup - create a chain of exceptions
        final Exception rootCause = new IllegalArgumentException("Root cause");
        final Exception middleCause = new IllegalStateException("Middle cause", rootCause);
        final String message = "Top level SSO error";

            return running;
        }

        /**
         * Waits for the crawling thread to terminate.
         * This method blocks until the thread completes its execution.
         * Interrupted exceptions are caught and logged at debug level.
         */
        public void awaitTermination() {
            try {
                join();
            } catch (final InterruptedException e) {

        assertFalse(AdminLogAction.isLogFilename(""));
    }

    @Test
    public void test_isLogFilename_withPathSeparators() {
        // isLogFilename only checks the file extension, not path components
        assertTrue(AdminLogAction.isLogFilename("subdir/fess.log"));
        assertTrue(AdminLogAction.isLogFilename("../fess.log"));
    }

        assertTrue(exception.getStackTrace().length > 0);
    }

    @Test
    public void test_multipleNestedExceptions() {
        // Test with multiple nested exceptions
        Exception innerCause = new IllegalArgumentException("Invalid image format");
        Exception middleCause = new RuntimeException("Processing failed", innerCause);

        registerClassSafely(kryo, Arrays.asList().getClass());
    }

    /**
     * Safely registers a class with Kryo, logging any registration failures at WARN level.
     * <p>
     * This method catches exceptions for individual class registrations to ensure
     * that a failure to register one class doesn't prevent other classes from being registered.

        // Test polymorphic behavior
        SearchLogEvent[] events = { event1, event2, event3 };

        for (SearchLogEvent event : events) {
            // All methods should be callable without exceptions
            String id = event.getId();
            Long version = event.getVersionNo();
            Map<String, Object> source = event.toSource();
            String type = event.getEventType();

        assertTrue(RootAction.class.isAssignableFrom(TestAction.class));
        assertTrue(RootAction.class.isAssignableFrom(AdminAction.class));

        // Create exceptions with subclasses
        UserRoleLoginException exception1 = new UserRoleLoginException(TestAction.class);
        UserRoleLoginException exception2 = new UserRoleLoginException(AdminAction.class);

        for (final String[] testCase : testCases) {
            final String mimeType = testCase[0];
            final String expectedExtension = testCase[1];
            assertEquals("Extension for " + mimeType, expectedExtension, generator.getExtensionFromMimeType(mimeType));
        }
    }

    // Test non-image MIME types return empty string
    @Test

        assertTrue(outputStream instanceof ByteArrayOutputStream);
    }

    @Test
    public void test_getXContentString_success() {
        // Test that getXContentString method exists and handles exceptions properly
        ToXContent xContent = new ToXContent() {
            @Override
            public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {

        } catch (final JobProcessingException e) {
            assertEquals("test error", e.getMessage());
        }
    }

    /**
     * Test that generic exceptions are caught and null is returned
     */
    @Test
    public void test_evaluate_genericExceptionReturnsNull() {
        final Map<String, Object> params = new HashMap<>();