(filesystem.delegate as? FakeFileSystem)?.checkNoOpenFiles()
  }

  @Test
  fun emptyCache() {
    cache.close()
    assertJournalEquals()
  }

  @Test
  fun recoverFromInitializationFailure() {
    // Add an uncommitted entry. This will get detected on initialization, and the cache will
    // attempt to delete the file. Do not explicitly close the cache here so the entry is left as
    // incomplete.