describe('>>>>>>>>>>>>>>>>>>>>>>>>>  HL7 FUNCTIONS  <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<', () ->

  it('should be able to send an AA ACK Message', (done) ->
    err = ''
    client = {}
    client.write = (message)->
      expect(message).toBe(testDummies.hl7.expectedACK)
      done()

    hl7.sendAcknowlegmentMessage(testDummies.hl7.parsedMessage, true, err, client)

hl7Date = () ->
  new Date().toISOString().slice(0,16).replace(/-|:|T/g,"") ##YYYYMMDDHHMMSS.UUUU[+|-ZZzz] digits on the right side can be skipped

exports.sendAcknowlegmentMessage = (message, accept, err, client) ->
...
  msh = 'MSH|^~\&|' + sendingApplication + '|' + sendingFacility + '|' + receivingApplication + '|' + receivingFacility + '|' + hl7Date() + '||ACK' + messageType + '|' + answerMessageId + '|P|' + versionID + 'rn'
  msa = 'MSA|' + messageAccepted + '|' + messageControllId + '|' + err + '|' + 'rn'
  returnMessage = 'v' + msh + msa + 'rn'
  client.write(returnMessage)
...