source: class ClientCacheTest {
  
      @Autowired
      private ClientCache clientCache;
      @Autowired
      private CachedClientGetter cachedClientGetter;
  
      @Test
      public void shouldReturnClientFromCache() {
  
target:         //given
          cachedClientGetter.getBestClients();
  
          //when
          Collection<Client> cachedClients = clientCache.getCachedClients();
  
          //then
          assertThat(cachedClients).hasSize(10);
      }
  
  }