如何在MacOSX项目中从UITestClass写入文件

Question

我尝试了以下代码段，但无法将其写入文件

let helperPath = "/Users/apple/Documents/UITestHelper.txt"
        let fileManager = FileManager.default
        if fileManager.fileExists(atPath: helperPath) {
            do {
                try "hello".write(toFile: helperPath, atomically: true, encoding: String.Encoding.utf8)

            } catch let error as NSError {
                print("An error took place: \(error)")
        }

我看到的错误是错误域= NSPOSIXErrorDomain代码= 1 \“不允许操作\”}}