assertFailsWith<IllegalArgumentException> {
      cache.edit("my key")
    }
  }

  @ParameterizedTest
  @ArgumentsSource(FileSystemParamProvider::class)
  fun keyWithNewlineNotPermitted(parameters: Pair<FileSystem, Boolean>) {
    setUp(parameters.first, parameters.second)
    assertFailsWith<IllegalArgumentException> {
      cache.edit("my\nkey")
    }
  }

  @ParameterizedTest