send.js

process.env.NO_DEPRECATION = 'send'

var after = require('after')
var assert = require('assert')
var fs = require('fs')
var http = require('http')
var path = require('path')
var request = require('supertest')
var send = require('..')

// test server

var dateRegExp = /^\w{3}, \d+ \w+ \d+ \d+:\d+:\d+ \w+$/
var fixtures = path.join(__dirname, 'fixtures')
var app = http.createServer(function (req, res) {
  function error (err) {
    res.statusCode = err.status
    res.end(http.STATUS_CODES[err.status])
  }

  send(req, req.url, { root: fixtures })
    .on('error', error)
    .pipe(res)
})

describe('send(file).pipe(res)', function () {
  it('should stream the file contents', function (done) {
    request(app)
      .get('/name.txt')
      .expect('Content-Length', '4')
      .expect(200, 'tobi', done)
  })

  it('should stream a zero-length file', function (done) {
    request(app)
      .get('/empty.txt')
      .expect('Content-Length', '0')
      .expect(200, '', done)
  })

  it('should decode the given path as a URI', function (done) {
    request(app)
      .get('/some%20thing.txt')
      .expect(200, 'hey', done)
  })

  it('should serve files with dots in name', function (done) {
    request(app)
      .get('/do..ts.txt')
      .expect(200, '...', done)
  })

  it('should treat a malformed URI as a bad request', function (done) {
    request(app)
      .get('/some%99thing.txt')
      .expect(400, 'Bad Request', done)
  })

  it('should 400 on NULL bytes', function (done) {
    request(app)
      .get('/some%00thing.txt')
      .expect(400, 'Bad Request', done)
  })

  it('should treat an ENAMETOOLONG as a 404', function (done) {
    var path = Array(100).join('foobar')
    request(app)
      .get('/' + path)
      .expect(404, done)
  })

  it('should handle headers already sent error', function (done) {
    var app = http.createServer(function (req, res) {
      res.write('0')
      send(req, req.url, { root: fixtures })
        .on('error', function (err) { res.end(' - ' + err.message) })
        .pipe(res)
    })
    request(app)
      .get('/name.txt')
      .expect(200, '0 - Can\'t set headers after they are sent.', done)
  })

  it('should support HEAD', function (done) {
    request(app)
      .head('/name.txt')
      .expect(200)
      .expect('Content-Length', '4')
      .expect(shouldNotHaveBody())
      .end(done)
  })

  it('should add an ETag header field', function (done) {
    request(app)
      .get('/name.txt')
      .expect('etag', /^W\/"[^"]+"$/)
      .end(done)
  })

  it('should add a Date header field', function (done) {
    request(app)
      .get('/name.txt')
      .expect('date', dateRegExp, done)
  })

  it('should add a Last-Modified header field', function (done) {
    request(app)
      .get('/name.txt')
      .expect('last-modified', dateRegExp, done)
  })

  it('should add a Accept-Ranges header field', function (done) {
    request(app)
      .get('/name.txt')
      .expect('Accept-Ranges', 'bytes', done)
  })

  it('should 404 if the file does not exist', function (done) {
    request(app)
      .get('/meow')
      .expect(404, 'Not Found', done)
  })

  it('should emit ENOENT if the file does not exist', function (done) {
    var app = http.createServer(function (req, res) {
      send(req, req.url, { root: fixtures })
        .on('error', function (err) { res.end(err.statusCode + ' ' + err.code) })
        .pipe(res)
    })

    request(app)
      .get('/meow')
      .expect(200, '404 ENOENT', done)
  })

  it('should not override content-type', function (done) {
    var app = http.createServer(function (req, res) {
      res.setHeader('Content-Type', 'application/x-custom')
      send(req, req.url, { root: fixtures }).pipe(res)
    })
    request(app)
      .get('/name.txt')
      .expect('Content-Type', 'application/x-custom', done)
  })

  it('should set Content-Type via mime map', function (done) {
    request(app)
      .get('/name.txt')
      .expect('Content-Type', 'text/plain; charset=utf-8')
      .expect(200, function (err) {
        if (err) return done(err)
        request(app)
          .get('/tobi.html')
          .expect('Content-Type', 'text/html; charset=utf-8')
          .expect(200, done)
      })
  })

  it('should default Content-Type to octet-stream', function (done) {
    request(app)
      .get('/no_ext')
      .expect('Content-Type', 'application/octet-stream')
      .expect(200, done)
  })

  it('should 404 if file disappears after stat, before open', function (done) {
    var app = http.createServer(function (req, res) {
      send(req, req.url, { root: 'test/fixtures' })
        .on('file', function () {
        // simulate file ENOENT after on open, after stat
          var fn = this.send
          this.send = function (path, stat) {
            fn.call(this, (path + '__xxx_no_exist'), stat)
          }
        })
        .pipe(res)
    })

    request(app)
      .get('/name.txt')
      .expect(404, done)
  })

  it('should 500 on file stream error', function (done) {
    var app = http.createServer(function (req, res) {
      send(req, req.url, { root: 'test/fixtures' })
        .on('stream', function (stream) {
        // simulate file error
          stream.on('open', function () {
            stream.emit('error', new Error('boom!'))
          })
        })
        .pipe(res)
    })

    request(app)
      .get('/name.txt')
      .expect(500, done)
  })

  describe('"headers" event', function () {
    it('should fire when sending file', function (done) {
      var cb = after(2, done)
      var server = http.createServer(function (req, res) {
        send(req, req.url, { root: fixtures })
          .on('headers', function () { cb() })
          .pipe(res)
      })

      request(server)
        .get('/name.txt')
        .expect(200, 'tobi', cb)
    })

    it('should not fire on 404', function (done) {
      var cb = after(1, done)
      var server = http.createServer(function (req, res) {
        send(req, req.url, { root: fixtures })
          .on('headers', function () { cb() })
          .pipe(res)
      })

      request(server)
        .get('/bogus')
        .expect(404, cb)
    })

    it('should fire on index', function (done) {
      var cb = after(2, done)
      var server = http.createServer(function (req, res) {
        send(req, req.url, { root: fixtures })
          .on('headers', function () { cb() })
          .pipe(res)
      })

      request(server)
        .get('/pets/')
        .expect(200, /tobi/, cb)
    })

    it('should not fire on redirect', function (done) {
      var cb = after(1, done)
      var server = http.createServer(function (req, res) {
        send(req, req.url, { root: fixtures })
          .on('headers', function () { cb() })
          .pipe(res)
      })

      request(server)
        .get('/pets')
        .expect(301, cb)
    })

    it('should provide path', function (done) {
      var cb = after(2, done)
      var server = http.createServer(function (req, res) {
        send(req, req.url, { root: fixtures })
          .on('headers', onHeaders)
          .pipe(res)
      })

      function onHeaders (res, filePath) {
        assert.ok(filePath)
        assert.strictEqual(path.normalize(filePath), path.normalize(path.join(fixtures, 'name.txt')))
        cb()
      }

      request(server)
        .get('/name.txt')
        .expect(200, 'tobi', cb)
    })

    it('should provide stat', function (done) {
      var cb = after(2, done)
      var server = http.createServer(function (req, res) {
        send(req, req.url, { root: fixtures })
          .on('headers', onHeaders)
          .pipe(res)
      })

      function onHeaders (res, path, stat) {
        assert.ok(stat)
        assert.ok('ctime' in stat)
        assert.ok('mtime' in stat)
        cb()
      }

      request(server)
        .get('/name.txt')
        .expect(200, 'tobi', cb)
    })

    it('should allow altering headers', function (done) {
      var server = http.createServer(function (req, res) {
        send(req, req.url, { root: fixtures })
          .on('headers', onHeaders)
          .pipe(res)
      })

      function onHeaders (res, path, stat) {
        res.setHeader('Cache-Control', 'no-cache')
        res.setHeader('Content-Type', 'text/x-custom')
        res.setHeader('ETag', 'W/"everything"')
        res.setHeader('X-Created', stat.ctime.toUTCString())
      }

      request(server)
        .get('/name.txt')
        .expect(200)
        .expect('Cache-Control', 'no-cache')
        .expect('Content-Type', 'text/x-custom')
        .expect('ETag', 'W/"everything"')
        .expect('X-Created', dateRegExp)
        .expect('tobi')
        .end(done)
    })
  })

  describe('when "directory" listeners are present', function () {
    it('should be called when sending directory', function (done) {
      var server = http.createServer(function (req, res) {
        send(req, req.url, { root: fixtures })
          .on('directory', onDirectory)
          .pipe(res)
      })

      function onDirectory (res) {
        res.statusCode = 400
        res.end('No directory for you')
      }

      request(server)
        .get('/pets')
        .expect(400, 'No directory for you', done)
    })

    it('should be called with path', function (done) {
      var server = http.createServer(function (req, res) {
        send(req, req.url, { root: fixtures })
          .on('directory', onDirectory)
          .pipe(res)
      })

      function onDirectory (res, dirPath) {
        res.end(path.normalize(dirPath))
      }

      request(server)
        .get('/pets')
        .expect(200, path.normalize(path.join(fixtures, 'pets')), done)
    })
  })

  describe('when no "directory" listeners are present', function () {
    it('should redirect directories to trailing slash', function (done) {
      request(createServer({ root: fixtures }))
        .get('/pets')
        .expect('Location', '/pets/')
        .expect(301, done)
    })

    it('should respond with an HTML redirect', function (done) {
      request(createServer({ root: fixtures }))
        .get('/pets')
        .expect('Location', '/pets/')
        .expect('Content-Type', /html/)
        .expect(301, />Redirecting to \/pets\/</, done)
    })

    it('should respond with default Content-Security-Policy', function (done) {
      request(createServer({ root: fixtures }))
        .get('/pets')
        .expect('Location', '/pets/')
        .expect('Content-Security-Policy', "default-src 'none'")
        .expect(301, done)
    })

    it('should not redirect to protocol-relative locations', function (done) {
      request(createServer({ root: fixtures }))
        .get('//pets')
        .expect('Location', '/pets/')
        .expect(301, done)
    })

    it('should respond with an HTML redirect', function (done) {
      var app = http.createServer(function (req, res) {
        send(req, req.url.replace('/snow', '/snow ☃'), { root: 'test/fixtures' })
          .pipe(res)
      })

      request(app)
        .get('/snow')
        .expect('Location', '/snow%20%E2%98%83/')
        .expect('Content-Type', /html/)
        .expect(301, />Redirecting to \/snow%20%E2%98%83\/</, done)
    })
  })

  describe('when no "error" listeners are present', function () {
    it('should respond to errors directly', function (done) {
      request(createServer({ root: fixtures }))
        .get('/foobar')
        .expect(404, />Not Found</, done)
    })

    it('should respond with default Content-Security-Policy', function (done) {
      request(createServer({ root: fixtures }))
        .get('/foobar')
        .expect('Content-Security-Policy', "default-src 'none'")
        .expect(404, done)
    })

    it('should remove all previously-set headers', function (done) {
      var server = createServer({ root: fixtures }, function (req, res) {
        res.setHeader('X-Foo', 'bar')
      })

      request(server)
        .get('/foobar')
        .expect(shouldNotHaveHeader('X-Foo'))
        .expect(404, done)
    })
  })

  describe('with conditional-GET', function () {
    it('should remove Content headers with 304', function (done) {
      var server = createServer({ root: fixtures }, function (req, res) {
        res.setHeader('Content-Language', 'en-US')
        res.setHeader('Content-Location', 'http://localhost/name.txt')
        res.setHeader('Contents', 'foo')
      })

      request(server)
        .get('/name.txt')
        .expect(200, function (err, res) {
          if (err) return done(err)
          request(server)
            .get('/name.txt')
            .set('If-None-Match', res.headers.etag)
            .expect(shouldNotHaveHeader('Content-Language'))
            .expect(shouldNotHaveHeader('Content-Length'))
            .expect(shouldNotHaveHeader('Content-Type'))
            .expect('Content-Location', 'http://localhost/name.txt')
            .expect('Contents', 'foo')
            .expect(304, done)
        })
    })

    it('should not remove all Content-* headers', function (done) {
      var server = createServer({ root: fixtures }, function (req, res) {
        res.setHeader('Content-Location', 'http://localhost/name.txt')
        res.setHeader('Content-Security-Policy', 'default-src \'self\'')
      })

      request(server)
        .get('/name.txt')
        .expect(200, function (err, res) {
          if (err) return done(err)
          request(server)
            .get('/name.txt')
            .set('If-None-Match', res.headers.etag)
            .expect(shouldNotHaveHeader('Content-Length'))
            .expect(shouldNotHaveHeader('Content-Type'))
            .expect('Content-Location', 'http://localhost/name.txt')
            .expect('Content-Security-Policy', 'default-src \'self\'')
            .expect(304, done)
        })
    })

    describe('where "If-Match" is set', function () {
      it('should respond with 200 when "*"', function (done) {
        request(app)
          .get('/name.txt')
          .set('If-Match', '*')
          .expect(200, done)
      })

      it('should respond with 412 when ETag unmatched', function (done) {
        request(app)
          .get('/name.txt')
          .set('If-Match', ' "foo",, "bar" ,')
          .expect(412, done)
      })

      it('should respond with 200 when ETag matched', function (done) {
        request(app)
          .get('/name.txt')
          .expect(200, function (err, res) {
            if (err) return done(err)
            request(app)
              .get('/name.txt')
              .set('If-Match', '"foo", "bar", ' + res.headers.etag)
              .expect(200, done)
          })
      })
    })

    describe('where "If-Modified-Since" is set', function () {
      it('should respond with 304 when unmodified', function (done) {
        request(app)
          .get('/name.txt')
          .expect(200, function (err, res) {
            if (err) return done(err)
            request(app)
              .get('/name.txt')
              .set('If-Modified-Since', res.headers['last-modified'])
              .expect(304, done)
          })
      })

      it('should respond with 200 when modified', function (done) {
        request(app)
          .get('/name.txt')
          .expect(200, function (err, res) {
            if (err) return done(err)
            var lmod = new Date(res.headers['last-modified'])
            var date = new Date(lmod - 60000)
            request(app)
              .get('/name.txt')
              .set('If-Modified-Since', date.toUTCString())
              .expect(200, 'tobi', done)
          })
      })
    })

    describe('where "If-None-Match" is set', function () {
      it('should respond with 304 when ETag matched', function (done) {
        request(app)
          .get('/name.txt')
          .expect(200, function (err, res) {
            if (err) return done(err)
            request(app)
              .get('/name.txt')
              .set('If-None-Match', res.headers.etag)
              .expect(304, done)
          })
      })

      it('should respond with 200 when ETag unmatched', function (done) {
        request(app)
          .get('/name.txt')
          .expect(200, function (err, res) {
            if (err) return done(err)
            request(app)
              .get('/name.txt')
              .set('If-None-Match', '"123"')
              .expect(200, 'tobi', done)
          })
      })
    })

    describe('where "If-Unmodified-Since" is set', function () {
      it('should respond with 200 when unmodified', function (done) {
        request(app)
          .get('/name.txt')
          .expect(200, function (err, res) {
            if (err) return done(err)
            request(app)
              .get('/name.txt')
              .set('If-Unmodified-Since', res.headers['last-modified'])
              .expect(200, done)
          })
      })

      it('should respond with 412 when modified', function (done) {
        request(app)
          .get('/name.txt')
          .expect(200, function (err, res) {
            if (err) return done(err)
            var lmod = new Date(res.headers['last-modified'])
            var date = new Date(lmod - 60000).toUTCString()
            request(app)
              .get('/name.txt')
              .set('If-Unmodified-Since', date)
              .expect(412, done)
          })
      })

      it('should respond with 200 when invalid date', function (done) {
        request(app)
          .get('/name.txt')
          .set('If-Unmodified-Since', 'foo')
          .expect(200, done)
      })
    })
  })

  describe('with Range request', function () {
    it('should support byte ranges', function (done) {
      request(app)
        .get('/nums.txt')
        .set('Range', 'bytes=0-4')
        .expect(206, '12345', done)
    })

    it('should ignore non-byte ranges', function (done) {
      request(app)
        .get('/nums.txt')
        .set('Range', 'items=0-4')
        .expect(200, '123456789', done)
    })

    it('should be inclusive', function (done) {
      request(app)
        .get('/nums.txt')
        .set('Range', 'bytes=0-0')
        .expect(206, '1', done)
    })

    it('should set Content-Range', function (done) {
      request(app)
        .get('/nums.txt')
        .set('Range', 'bytes=2-5')
        .expect('Content-Range', 'bytes 2-5/9')
        .expect(206, done)
    })

    it('should support -n', function (done) {
      request(app)
        .get('/nums.txt')
        .set('Range', 'bytes=-3')
        .expect(206, '789', done)
    })

    it('should support n-', function (done) {
      request(app)
        .get('/nums.txt')
        .set('Range', 'bytes=3-')
        .expect(206, '456789', done)
    })

    it('should respond with 206 "Partial Content"', function (done) {
      request(app)
        .get('/nums.txt')
        .set('Range', 'bytes=0-4')
        .expect(206, done)
    })

    it('should set Content-Length to the # of octets transferred', function (done) {
      request(app)
        .get('/nums.txt')
        .set('Range', 'bytes=2-3')
        .expect('Content-Length', '2')
        .expect(206, '34', done)
    })

    describe('when last-byte-pos of the range is greater the length', function () {
      it('is taken to be equal to one less than the length', function (done) {
        request(app)
          .get('/nums.txt')
          .set('Range', 'bytes=2-50')
          .expect('Content-Range', 'bytes 2-8/9')
          .expect(206, done)
      })

      it('should adapt the Content-Length accordingly', function (done) {
        request(app)
          .get('/nums.txt')
          .set('Range', 'bytes=2-50')
          .expect('Content-Length', '7')
          .expect(206, done)
      })
    })

    describe('when the first- byte-pos of the range is greater length', function () {
      it('should respond with 416', function (done) {
        request(app)
          .get('/nums.txt')
          .set('Range', 'bytes=9-50')
          .expect('Content-Range', 'bytes */9')
          .expect(416, done)
      })

      it('should emit error 416 with content-range header', function (done) {
        var server = http.createServer(function (req, res) {
          send(req, req.url, { root: fixtures })
            .on('error', function (err) {
              res.setHeader('X-Content-Range', err.headers['Content-Range'])
              res.statusCode = err.statusCode
              res.end(err.message)
            })
            .pipe(res)
        })

        request(server)
          .get('/nums.txt')
          .set('Range', 'bytes=9-50')
          .expect('X-Content-Range', 'bytes */9')
          .expect(416, done)
      })
    })

    describe('when syntactically invalid', function () {
      it('should respond with 200 and the entire contents', function (done) {
        request(app)
          .get('/nums.txt')
          .set('Range', 'asdf')
          .expect(200, '123456789', done)
      })
    })

    describe('when multiple ranges', function () {
      it('should respond with 200 and the entire contents', function (done) {
        request(app)
          .get('/nums.txt')
          .set('Range', 'bytes=1-1,3-')
          .expect(shouldNotHaveHeader('Content-Range'))
          .expect(200, '123456789', done)
      })

      it('should respond with 206 is all ranges can be combined', function (done) {
        request(app)
          .get('/nums.txt')
          .set('Range', 'bytes=1-2,3-5')
          .expect('Content-Range', 'bytes 1-5/9')
          .expect(206, '23456', done)
      })
    })

    describe('when if-range present', function () {
      it('should respond with parts when etag unchanged', function (done) {
        request(app)
          .get('/nums.txt')
          .expect(200, function (err, res) {
            if (err) return done(err)
            var etag = res.headers.etag

            request(app)
              .get('/nums.txt')
              .set('If-Range', etag)
              .set('Range', 'bytes=0-0')
              .expect(206, '1', done)
          })
      })

      it('should respond with 200 when etag changed', function (done) {
        request(app)
          .get('/nums.txt')
          .expect(200, function (err, res) {
            if (err) return done(err)
            var etag = res.headers.etag.replace(/"(.)/, '"0$1')

            request(app)
              .get('/nums.txt')
              .set('If-Range', etag)
              .set('Range', 'bytes=0-0')
              .expect(200, '123456789', done)
          })
      })

      it('should respond with parts when modified unchanged', function (done) {
        request(app)
          .get('/nums.txt')
          .expect(200, function (err, res) {
            if (err) return done(err)
            var modified = res.headers['last-modified']

            request(app)
              .get('/nums.txt')
              .set('If-Range', modified)
              .set('Range', 'bytes=0-0')
              .expect(206, '1', done)
          })
      })

      it('should respond with 200 when modified changed', function (done) {
        request(app)
          .get('/nums.txt')
          .expect(200, function (err, res) {
            if (err) return done(err)
            var modified = Date.parse(res.headers['last-modified']) - 20000

            request(app)
              .get('/nums.txt')
              .set('If-Range', new Date(modified).toUTCString())
              .set('Range', 'bytes=0-0')
              .expect(200, '123456789', done)
          })
      })

      it('should respond with 200 when invalid value', function (done) {
        request(app)
          .get('/nums.txt')
          .set('If-Range', 'foo')
          .set('Range', 'bytes=0-0')
          .expect(200, '123456789', done)
      })
    })
  })

  describe('when "options" is specified', function () {
    it('should support start/end', function (done) {
      request(createServer({ root: fixtures, start: 3, end: 5 }))
        .get('/nums.txt')
        .expect(200, '456', done)
    })

    it('should adjust too large end', function (done) {
      request(createServer({ root: fixtures, start: 3, end: 90 }))
        .get('/nums.txt')
        .expect(200, '456789', done)
    })

    it('should support start/end with Range request', function (done) {
      request(createServer({ root: fixtures, start: 0, end: 2 }))
        .get('/nums.txt')
        .set('Range', 'bytes=-2')
        .expect(206, '23', done)
    })

    it('should support start/end with unsatisfiable Range request', function (done) {
      request(createServer({ root: fixtures, start: 0, end: 2 }))
        .get('/nums.txt')
        .set('Range', 'bytes=5-9')
        .expect('Content-Range', 'bytes */3')
        .expect(416, done)
    })
  })
})

describe('send(file, options)', function () {
  describe('acceptRanges', function () {
    it('should support disabling accept-ranges', function (done) {
      request(createServer({ acceptRanges: false, root: fixtures }))
        .get('/nums.txt')
        .expect(shouldNotHaveHeader('Accept-Ranges'))
        .expect(200, done)
    })

    it('should ignore requested range', function (done) {
      request(createServer({ acceptRanges: false, root: fixtures }))
        .get('/nums.txt')
        .set('Range', 'bytes=0-2')
        .expect(shouldNotHaveHeader('Accept-Ranges'))
        .expect(shouldNotHaveHeader('Content-Range'))
        .expect(200, '123456789', done)
    })
  })

  describe('cacheControl', function () {
    it('should support disabling cache-control', function (done) {
      request(createServer({ cacheControl: false, root: fixtures }))
        .get('/name.txt')
        .expect(shouldNotHaveHeader('Cache-Control'))
        .expect(200, done)
    })

    it('should ignore maxAge option', function (done) {
      request(createServer({ cacheControl: false, maxAge: 1000, root: fixtures }))
        .get('/name.txt')
        .expect(shouldNotHaveHeader('Cache-Control'))
        .expect(200, done)
    })
  })

  describe('etag', function () {
    it('should support disabling etags', function (done) {
      request(createServer({ etag: false, root: fixtures }))
        .get('/name.txt')
        .expect(shouldNotHaveHeader('ETag'))
        .expect(200, done)
    })
  })

  describe('extensions', function () {
    it('should reject numbers', function (done) {
      request(createServer({ extensions: 42, root: fixtures }))
        .get('/pets/')
        .expect(500, /TypeError: extensions option/, done)
    })

    it('should reject true', function (done) {
      request(createServer({ extensions: true, root: fixtures }))
        .get('/pets/')
        .expect(500, /TypeError: extensions option/, done)
    })

    it('should be not be enabled by default', function (done) {
      request(createServer({ root: fixtures }))
        .get('/tobi')
        .expect(404, done)
    })

    it('should be configurable', function (done) {
      request(createServer({ extensions: 'txt', root: fixtures }))
        .get('/name')
        .expect(200, 'tobi', done)
    })

    it('should support disabling extensions', function (done) {
      request(createServer({ extensions: false, root: fixtures }))
        .get('/name')
        .expect(404, done)
    })

    it('should support fallbacks', function (done) {
      request(createServer({ extensions: ['htm', 'html', 'txt'], root: fixtures }))
        .get('/name')
        .expect(200, '<p>tobi</p>', done)
    })

    it('should 404 if nothing found', function (done) {
      request(createServer({ extensions: ['htm', 'html', 'txt'], root: fixtures }))
        .get('/bob')
        .expect(404, done)
    })

    it('should skip directories', function (done) {
      request(createServer({ extensions: ['file', 'dir'], root: fixtures }))
        .get('/name')
        .expect(404, done)
    })

    it('should not search if file has extension', function (done) {
      request(createServer({ extensions: 'html', root: fixtures }))
        .get('/thing.html')
        .expect(404, done)
    })
  })

  describe('lastModified', function () {
    it('should support disabling last-modified', function (done) {
      request(createServer({ lastModified: false, root: fixtures }))
        .get('/name.txt')
        .expect(shouldNotHaveHeader('Last-Modified'))
        .expect(200, done)
    })
  })

  describe('dotfiles', function () {
    it('should default to "ignore"', function (done) {
      request(createServer({ root: fixtures }))
        .get('/.hidden.txt')
        .expect(404, done)
    })

    it('should ignore file within dotfile directory', function (done) {
      request(createServer({ root: fixtures }))
        .get('/.mine/name.txt')
        .expect(404, done)
    })

    it('should reject bad value', function (done) {
      request(createServer({ dotfiles: 'bogus' }))
        .get('/name.txt')
        .expect(500, /dotfiles/, done)
    })

    describe('when "allow"', function (done) {
      it('should send dotfile', function (done) {
        request(createServer({ dotfiles: 'allow', root: fixtures }))
          .get('/.hidden.txt')
          .expect(200, 'secret', done)
      })

      it('should send within dotfile directory', function (done) {
        request(createServer({ dotfiles: 'allow', root: fixtures }))
          .get('/.mine/name.txt')
          .expect(200, /tobi/, done)
      })

      it('should 404 for non-existent dotfile', function (done) {
        request(createServer({ dotfiles: 'allow', root: fixtures }))
          .get('/.nothere')
          .expect(404, done)
      })
    })

    describe('when "deny"', function (done) {
      it('should 403 for dotfile', function (done) {
        request(createServer({ dotfiles: 'deny', root: fixtures }))
          .get('/.hidden.txt')
          .expect(403, done)
      })

      it('should 403 for dotfile directory', function (done) {
        request(createServer({ dotfiles: 'deny', root: fixtures }))
          .get('/.mine')
          .expect(403, done)
      })

      it('should 403 for dotfile directory with trailing slash', function (done) {
        request(createServer({ dotfiles: 'deny', root: fixtures }))
          .get('/.mine/')
          .expect(403, done)
      })

      it('should 403 for file within dotfile directory', function (done) {
        request(createServer({ dotfiles: 'deny', root: fixtures }))
          .get('/.mine/name.txt')
          .expect(403, done)
      })

      it('should 403 for non-existent dotfile', function (done) {
        request(createServer({ dotfiles: 'deny', root: fixtures }))
          .get('/.nothere')
          .expect(403, done)
      })

      it('should 403 for non-existent dotfile directory', function (done) {
        request(createServer({ dotfiles: 'deny', root: fixtures }))
          .get('/.what/name.txt')
          .expect(403, done)
      })

      it('should 403 for dotfile in directory', function (done) {
        request(createServer({ dotfiles: 'deny', root: fixtures }))
          .get('/pets/.hidden')
          .expect(403, done)
      })

      it('should 403 for dotfile in dotfile directory', function (done) {
        request(createServer({ dotfiles: 'deny', root: fixtures }))
          .get('/.mine/.hidden')
          .expect(403, done)
      })

      it('should send files in root dotfile directory', function (done) {
        request(createServer({ dotfiles: 'deny', root: path.join(fixtures, '.mine') }))
          .get('/name.txt')
          .expect(200, /tobi/, done)
      })

      it('should 403 for dotfile without root', function (done) {
        var server = http.createServer(function onRequest (req, res) {
          send(req, fixtures + '/.mine' + req.url, { dotfiles: 'deny' }).pipe(res)
        })

        request(server)
          .get('/name.txt')
          .expect(403, done)
      })
    })

    describe('when "ignore"', function (done) {
      it('should 404 for dotfile', function (done) {
        request(createServer({ dotfiles: 'ignore', root: fixtures }))
          .get('/.hidden.txt')
          .expect(404, done)
      })

      it('should 404 for dotfile directory', function (done) {
        request(createServer({ dotfiles: 'ignore', root: fixtures }))
          .get('/.mine')
          .expect(404, done)
      })

      it('should 404 for dotfile directory with trailing slash', function (done) {
        request(createServer({ dotfiles: 'ignore', root: fixtures }))
          .get('/.mine/')
          .expect(404, done)
      })

      it('should 404 for file within dotfile directory', function (done) {
        request(createServer({ dotfiles: 'ignore', root: fixtures }))
          .get('/.mine/name.txt')
          .expect(404, done)
      })

      it('should 404 for non-existent dotfile', function (done) {
        request(createServer({ dotfiles: 'ignore', root: fixtures }))
          .get('/.nothere')
          .expect(404, done)
      })

      it('should 404 for non-existent dotfile directory', function (done) {
        request(createServer({ dotfiles: 'ignore', root: fixtures }))
          .get('/.what/name.txt')
          .expect(404, done)
      })

      it('should send files in root dotfile directory', function (done) {
        request(createServer({ dotfiles: 'ignore', root: path.join(fixtures, '.mine') }))
          .get('/name.txt')
          .expect(200, /tobi/, done)
      })

      it('should 404 for dotfile without root', function (done) {
        var server = http.createServer(function onRequest (req, res) {
          send(req, fixtures + '/.mine' + req.url, { dotfiles: 'ignore' }).pipe(res)
        })

        request(server)
          .get('/name.txt')
          .expect(404, done)
      })
    })
  })

  describe('immutable', function () {
    it('should default to false', function (done) {
      request(createServer({ root: fixtures }))
        .get('/name.txt')
        .expect('Cache-Control', 'public, max-age=0', done)
    })

    it('should set immutable directive in Cache-Control', function (done) {
      request(createServer({ immutable: true, maxAge: '1h', root: fixtures }))
        .get('/name.txt')
        .expect('Cache-Control', 'public, max-age=3600, immutable', done)
    })
  })

  describe('maxAge', function () {
    it('should default to 0', function (done) {
      request(createServer({ root: fixtures }))
        .get('/name.txt')
        .expect('Cache-Control', 'public, max-age=0', done)
    })

    it('should floor to integer', function (done) {
      request(createServer({ maxAge: 123956, root: fixtures }))
        .get('/name.txt')
        .expect('Cache-Control', 'public, max-age=123', done)
    })

    it('should accept string', function (done) {
      request(createServer({ maxAge: '30d', root: fixtures }))
        .get('/name.txt')
        .expect('Cache-Control', 'public, max-age=2592000', done)
    })

    it('should max at 1 year', function (done) {
      request(createServer({ maxAge: '2y', root: fixtures }))
        .get('/name.txt')
        .expect('Cache-Control', 'public, max-age=31536000', done)
    })
  })

  describe('index', function () {
    it('should reject numbers', function (done) {
      request(createServer({ root: fixtures, index: 42 }))
        .get('/pets/')
        .expect(500, /TypeError: index option/, done)
    })

    it('should reject true', function (done) {
      request(createServer({ root: fixtures, index: true }))
        .get('/pets/')
        .expect(500, /TypeError: index option/, done)
    })

    it('should default to index.html', function (done) {
      request(createServer({ root: fixtures }))
        .get('/pets/')
        .expect(fs.readFileSync(path.join(fixtures, 'pets', 'index.html'), 'utf8'), done)
    })

    it('should be configurable', function (done) {
      request(createServer({ root: fixtures, index: 'tobi.html' }))
        .get('/')
        .expect(200, '<p>tobi</p>', done)
    })

    it('should support disabling', function (done) {
      request(createServer({ root: fixtures, index: false }))
        .get('/pets/')
        .expect(403, done)
    })

    it('should support fallbacks', function (done) {
      request(createServer({ root: fixtures, index: ['default.htm', 'index.html'] }))
        .get('/pets/')
        .expect(200, fs.readFileSync(path.join(fixtures, 'pets', 'index.html'), 'utf8'), done)
    })

    it('should 404 if no index file found (file)', function (done) {
      request(createServer({ root: fixtures, index: 'default.htm' }))
        .get('/pets/')
        .expect(404, done)
    })

    it('should 404 if no index file found (dir)', function (done) {
      request(createServer({ root: fixtures, index: 'pets' }))
        .get('/')
        .expect(404, done)
    })

    it('should not follow directories', function (done) {
      request(createServer({ root: fixtures, index: ['pets', 'name.txt'] }))
        .get('/')
        .expect(200, 'tobi', done)
    })

    it('should work without root', function (done) {
      var server = http.createServer(function (req, res) {
        var p = path.join(fixtures, 'pets').replace(/\\/g, '/') + '/'
        send(req, p, { index: ['index.html'] })
          .pipe(res)
      })

      request(server)
        .get('/')
        .expect(200, /tobi/, done)
    })

    it('should 404 if file path contains trailing slash (windows)', function (done) {
      request(createServer({ root: fixtures, index: false }))
        .get('/tobi.html/')
        .expect(404, done)
    })
  })

  describe('root', function () {
    describe('when given', function () {
      it('should join root', function (done) {
        request(createServer({ root: fixtures }))
          .get('/pets/../name.txt')
          .expect(200, 'tobi', done)
      })

      it('should work with trailing slash', function (done) {
        var app = http.createServer(function (req, res) {
          send(req, req.url, { root: fixtures + '/' })
            .pipe(res)
        })

        request(app)
          .get('/name.txt')
          .expect(200, 'tobi', done)
      })

      it('should work with empty path', function (done) {
        var app = http.createServer(function (req, res) {
          send(req, '', { root: fixtures })
            .pipe(res)
        })

        request(app)
          .get('/name.txt')
          .expect(301, /Redirecting to/, done)
      })

      //
      // NOTE: This is not a real part of the API, but
      //       over time this has become something users
      //       are doing, so this will prevent unseen
      //       regressions around this use-case.
      //
      it('should try as file with empty path', function (done) {
        var app = http.createServer(function (req, res) {
          send(req, '', { root: path.join(fixtures, 'name.txt') })
            .pipe(res)
        })

        request(app)
          .get('/')
          .expect(200, 'tobi', done)
      })

      it('should restrict paths to within root', function (done) {
        request(createServer({ root: fixtures }))
          .get('/pets/../../send.js')
          .expect(403, done)
      })

      it('should allow .. in root', function (done) {
        var app = http.createServer(function (req, res) {
          send(req, req.url, { root: fixtures + '/../fixtures' })
            .pipe(res)
        })

        request(app)
          .get('/pets/../../send.js')
          .expect(403, done)
      })

      it('should not allow root transversal', function (done) {
        request(createServer({ root: path.join(fixtures, 'name.d') }))
          .get('/../name.dir/name.txt')
          .expect(403, done)
      })

      it('should not allow root path disclosure', function (done) {
        request(createServer({ root: fixtures }))
          .get('/pets/../../fixtures/name.txt')
          .expect(403, done)
      })
    })

    describe('when missing', function () {
      it('should consider .. malicious', function (done) {
        var app = http.createServer(function (req, res) {
          send(req, fixtures + req.url)
            .pipe(res)
        })

        request(app)
          .get('/../send.js')
          .expect(403, done)
      })

      it('should still serve files with dots in name', function (done) {
        var app = http.createServer(function (req, res) {
          send(req, fixtures + req.url)
            .pipe(res)
        })

        request(app)
          .get('/do..ts.txt')
          .expect(200, '...', done)
      })
    })
  })
})

function createServer (opts, fn) {
  return http.createServer(function onRequest (req, res) {
    try {
      fn && fn(req, res)
      send(req, req.url, opts).pipe(res)
    } catch (err) {
      res.statusCode = 500
      res.end(String(err))
    }
  })
}

function shouldNotHaveBody () {
  return function (res) {
    assert.ok(res.text === '' || res.text === undefined)
  }
}

function shouldNotHaveHeader (header) {
  return function (res) {
    assert.ok(!(header.toLowerCase() in res.headers), 'should not have header ' + header)
  }
}