assertThat(filesystem.exists(journalFile)).isTrue()
  }

  @Test
  fun openCreatesDirectoryIfNecessary() {
    cache.close()
    val dir = (cacheDir / "testOpenCreatesDirectoryIfNecessary").also { filesystem.createDirectories(it) }
    cache =
      DiskLruCache(filesystem, dir, appVersion, 2, Int.MAX_VALUE.toLong(), taskRunner).also {
        toClose.add(it)
      }