### Question:
FileCacheStore implements CacheStore { @Override public Map<String, String> getCacheItems() { Stream<Map.Entry<Object, Object>> stream = properties.entrySet().stream(); return stream.collect(Collectors.toMap( e -> String.valueOf(e.getKey()), e -> String.valueOf(e.getValue()))); } FileCacheStore(); @Override String getCacheDir(); @Override String getValueFromCache(String key); @Override boolean hasMatchingKeyValue(String key, String value); @Override void addToCache(String key, String value); @Override String deleteFromCache(String key); @Override void clearCache(); @Override Map<String, String> getCacheItems(); static final String CACHEDIR; }### Answer:
@Test @Order(4) void verifyCacheSize() { assertDoesNotThrow(() -> assertNotNull(cache().getCacheItems(), "Get cache items should never be null"), "getCacheItems threw an exception"); }