do-not-cache

var assert = require('assert')
var http = require('http')

var doNotCache = require('./')

var receivedResponse = false

http.createServer()
.on('request', function (request, response) {
  doNotCache(response)
  response.end()
})
.listen(0 /* random high port */, function () {
  var server = this
  var port = server.address().port
  http.request({port: port})
  .on('response', function (response) {
    var headers = response.headers
    receivedResponse = true
    // RFC 1945 (HTTP 1.0)
    assert(headers['pragma'] === 'no-cache') // Section 10.12
    assert(headers['expires'] === '0') // 10.7
    // RFC 2616 (HTTP 1.1)
    assert(
      headers['cache-control']
      .includes('no-cache')
    ) // Section 14.9.1
    assert(
      headers['cache-control']
      .includes('no-store')
    ) // 14.9.2
    assert(
      headers['cache-control']
      .includes('must-revalidate')
    ) // 14.9.4
    server.close()
  })
  .end()
})

process.on('exit', function () {
  assert(receivedResponse === true)
})