virtual void SetUp()
  {
    storage_.reset(new Orthanc::FilesystemStorage("UnitTestsResults"));
    storage_->Clear();
    Orthanc::Toolbox::RemoveFile("UnitTestsResults/cache.db");

    db_.reset(new Orthanc::SQLite::Connection());
    db_->Open("UnitTestsResults/cache.db");

    cache_.reset(new CacheManager(*db_, *storage_));
    cache_->SetSanityCheckEnabled(true);
  }