assertNotNull(result);
        assertTrue(result.contains("test@seed#with$special%chars"));
    }

    @Test
    public void test_clearCache() {
        // Test that clearCache doesn't throw exception
        popularWordHelper.clearCache();

        // Verify cache is cleared (we can't directly test this without accessing the cache)
        // But we can test that it doesn't throw exceptions
        assertTrue(true);

                } catch (final Exception e) {
                    return null;
                } finally {
                    final GroovyClassLoader loader = groovyShell.getClassLoader();
                    loader.clearCache();
                }
            }

            @Override
            protected String getName() {
                return Constants.DEFAULT_SCRIPT;
            }
        }.register();
    }

        public boolean calibrateCpuLoad() {
            return true;
        }
    }

    private static class MockPopularWordHelper extends PopularWordHelper {
        @Override
        public void clearCache() {
            // Mock implementation
        }
    }

    private static class MockSuggester {
        private MockSuggestIndexer indexer = new MockSuggestIndexer();

    // Mock PopularWordHelper implementation
    private class MockPopularWordHelper extends PopularWordHelper {
        private boolean cacheCleared = false;

        @Override
        public void clearCache() {
            cacheCleared = true;
        }

        public boolean isCacheCleared() {
            return cacheCleared;
        }
    }

    // Mock JobExecutor implementation