Attempted to Test CacheService, but can't figure it out.

API/Interfaces/ICacheService.cs

@@ -32,5 +32,7 @@ namespace API.Interfaces
         /// <param name="page">Page number to look for</param>
         /// <returns></returns>
         string GetCachedPagePath(Volume volume, int page);
+
+        bool CacheDirectoryIsAccessible();
     }
 }