// ExecObjectLayerAPINilTest - Sets the object layer to `nil`, and calls the registered object layer API endpoint,
// and assert the error response. The purpose is to validate the API handlers response when the object layer is uninitialized.
// Usage hint: Should be used at the end of the API end points tests (ex: check the last few lines of `testAPIListObjectPartsHandler`),

  @ParameterizedTest
  @ArgumentsSource(FileSystemParamProvider::class)
  fun isClosed_uninitializedCache(parameters: Pair<FileSystem, Boolean>) {
    setUp(parameters.first, parameters.second)
    // Create an uninitialized cache.
    cache =
      DiskLruCache(filesystem, cacheDir, appVersion, 2, Int.MAX_VALUE.toLong(), taskRunner).also {
        toClose.add(it)
      }
    assertThat(cache.isClosed()).isFalse()