var hidePoweredBy = require('..')

var connect = require('connect')
var request = require('supertest')
var assert = require('assert')

describe('hidePoweredBy', function () {
  function test (name, options) {
    it(name, function (done) {
      var app = connect()
      app.use(function (req, res, next) {
        res.setHeader('X-Powered-By', 'Computers')
        next()
      })
      app.use(options.middleware)
      app.use(function (req, res) {
        res.end('Hello world!')
      })
      request(app).get('/')
        .end(function (err, res) {
          if (err) {
            done(err)
            return
          }
          assert.equal(res.header['x-powered-by'], options.shouldBe)
          done()
        })
    })
  }

  it('works even if no header is set', function (done) {
    var app = connect()
    app.use(hidePoweredBy())
    app.use(function (req, res) {
      res.end('Hello world!')
    })
    request(app).get('/')
      .end(function (err, res) {
        if (err) {
          done(err)
          return
        }
        assert.equal(res.header['x-powered-by'], undefined)
        done()
      })
  })

  test('removes the X-Powered-By header', {
    middleware: hidePoweredBy(),
    shouldBe: undefined
  })

  test('allows you to explicitly set the header', {
    middleware: hidePoweredBy({ setTo: 'steampowered' }),
    shouldBe: 'steampowered'
  })

  it('names its function and middleware', function () {
    assert.equal(hidePoweredBy.name, 'hidePoweredBy')
    assert.equal(hidePoweredBy().name, 'hidePoweredBy')
  })
})