             ("testWritingWithBuffer", testWritingWithBuffer),
             ("testWritingWithMultiregionData", testWritingWithMultiregionData),
             ("test_constants", test_constants),
-            ("test_nullDevice", test_nullDevice),
             ("test_truncateFile", test_truncateFile),
             ("test_readabilityHandlerCloseFileRace", test_readabilityHandlerCloseFileRace),
             ("test_readabilityHandlerCloseFileRaceWithError", test_readabilityHandlerCloseFileRaceWithError),

                       "\(FileHandle.readCompletionNotification.rawValue) is not equal to NSFileHandleReadCompletionNotification")
    }

    func test_nullDevice() {
        let fh = FileHandle.nullDevice

        XCTAssertEqual(fh.fileDescriptor, -1)
        fh.closeFile()
        fh.seek(toFileOffset: 10)
        XCTAssertEqual(fh.offsetInFile, 0)

        fh.seek(toFileOffset: 0)
        XCTAssertEqual(fh.readDataToEndOfFile().count, 0)
    }
#endif

    func test_truncateFile() {
        let url: URL = URL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent(ProcessInfo.processInfo.globallyUniqueString, isDirectory: false)
