segment_test.swift

func isValidJSON(_ jsonString: String) -> Bool {
   if let data = jsonString.data(using: .utf8) {
   do {
      _ = try JSONSerialization.jsonObject(with: data, options: [])
     return true
   } catch {
     return false
   }
}
  return false
}

        

let writtenFileData = try! String(contentsOfFile: file.path)
let fileIsMalformed = isValidJSON(writtenFileData)
if fileIsMalformed  {
  let corruptedFileURL = URL(fileURLWithPath: "<PATH>/segment_\(UUID().uuidString).json")
  try! writtenFileData.write(to: corruptedFileURL, atomically: true, encoding: .utf8)
  print("### SEGMENT ### Batch file is not valid json")
}