text: var path = require('path')
  
  var mr = require('npm-registry-mock')
  var test = require('tap').test
  var common = require('../common-tap')
  var extend = Object.assign || require('util')._extend
  var Tacks = require('tacks')
  var Dir = Tacks.Dir
  var File = Tacks.File
  
  var workdir = path.join(__dirname, path.basename(__filename, '.js'))
  var cachedir = path.join(workdir, 'cache')
  var modulesdir = path.join(workdir, 'modules')
  var oldModule = path.join(modulesdir, 'good-night-0.1.0.tgz')
  var newModule = path.join(modulesdir, 'good-night-1.0.0.tgz')
  
  var config = [
    '--cache', cachedir,
    '--prefix', workdir,
    '--registry', common.registry
  ]
  
  var fixture = new Tacks(Dir({
    'cache': Dir(),
    'modules': Dir({
      'good-night-0.1.0.tgz': File(new Buffer(
        '1f8b0800000000000003ed934f4bc43010c57beea7187a59056dd36eff80' +
        'de85050541c1f3d8c634da4e4a925a8af8dd6db7bb8ba0e0c15559e9eff2' +
        '206f929909bc06f327143c6826f51f8d2267cf30c6d2388641c32c61ef75' +
        '4d9426e084519a25491645cbcc61e192c5d1e0ef7b90cf688d453d8cf2dd' +
        '77a65d60a707c28b0b031e61cdbd33f08452c52949515aef64729eb93652' +
        'd168323ff4d9f6bce026d7b2b11bafef11b1eb3a221a2aa6126c6da9f4e8' +
        '5e691f6e908a1a697b5ff346196995eec7023399c1c7fe95cc3999f57077' +
        'b717d7979efbeafef5a7fd2336b90f6a943484ff477a7c917f96c5bbfc87' +
        '493ae63f627138e7ff37c815195571bf52e268b1820e0d0825498055d069' +
        '6939d8521ab86f2dace0815715a0a9386f16c7e7730c676666660e9837c0' +
        'f6795d000c0000',
        'hex'
      )),
      'good-night-1.0.0.tgz': File(new Buffer(
        '1f8b0800000000000003ed954d6bc24010863dfb2bb6b9a8503793b849a0' +
        'eda5979efa052d484184252e495a331b76d78a94fef76e8cf683163cd42a' +
        '957d2e03796777268187543c7de299f0aba6d2472db1b5650020668cd81a' +
        '24117cae4bc23822ad208c93284a1208c216040318c436dff6223f31d386' +
        '2bbbca6fef69de85bcd77fc24b9b583ce4a5f04e88974939e96391e5c63b' +
        '6e9267a17421b10e030a14d6cf2742a7aaa8cc2a5b2c38e7f3f91c116d47' +
        'd3c2672697aa4eaf1425771c2725c7f579252aa90b23d5a26ed04de87f9f' +
        '3f2d52817ab9dcf0fee2f6d26bbfb6f7fdd10e8895f77ec90bb4f2ffc98c' +
        '0dfe439c7cf81fc4b5ff213070feef8254a2965341a732eb76b4cef39c12' +
        'e456eb52d82a29198dc637639f9c751fce8796eba35ea777ea0c3c14d6fe' +
        '532314f62ba9ccf6676cf21fbefcff59ed3f4b22e7ff2e60110bc37d2fe1' +
        '70381c8e9df306642df14500100000',
        'hex'
      ))
    })
  }))
  
  var server
  
  // In this test we mock a situation where the user has a package in his cache,
  // a newer version of the package is published, and the user tried to install
  // said new version while requestion that the cache be used.
  // npm should see that it doesn't have the package in its cache and hit the
  // registry.
  var onlyOldMetadata = {
    'name': 'good-night',
    'dist-tags': {
      'latest': '0.1.0'
    },
    'versions': {
      '0.1.0': {
        'name': 'good-night',
        'version': '0.1.0',
        'dist': {
          'shasum': '2a746d49dd074ba0ec2d6ff13babd40c658d89eb',
          'tarball': 'http://localhost:' + common.port + '/good-night/-/good-night-0.1.0.tgz'
        }
      }
    }
  }
  
  var oldAndNewMetadata = extend({}, onlyOldMetadata)
  oldAndNewMetadata['dist-tags'] = { latest: '1.0.0' }
  oldAndNewMetadata.versions = extend({
    '1.0.0': {
      'name': 'good-night',
      'version': '1.0.0',
      'dist': {
        'shasum': 'f377bf002a0a8fc4085d347a160a790b76896bc3',
        'tarball': 'http://localhost:' + common.port + '/good-night/-/good-night-1.0.0.tgz'
      }
    }
  }, oldAndNewMetadata.versions)
  
  function setup () {
    cleanup()
    fixture.create(workdir)
  }
  
  function cleanup () {
    fixture.remove(workdir)
  }
  
  test('setup', function (t) {
    setup()
    t.end()
  })
  
  test('setup initial server', function (t) {
    mr({
      port: common.port,
      throwOnUnmatched: true
    }, function (err, s) {
      t.ifError(err, 'registry mocked successfully')
      server = s
  
      server.get('/good-night')
        .many({ min: 1, max: 1 })
        .reply(200, onlyOldMetadata)
      server.get('/good-night/-/good-night-0.1.0.tgz')
        .many({ min: 1, max: 1 })
        .replyWithFile(200, oldModule)
  
      t.end()
    })
  })
  
  test('install initial version', function (t) {
    common.npm(config.concat([
      'install', 'good-night'
    ]), {stdio: 'inherit'}, function (err, code) {
      if (err) throw err
      t.is(code, 0, 'initial install succeeded')
      server.done()
      t.end()
    })
  })
  
  test('cleanup initial server', function (t) {
    server.close()
    t.end()
  })
  
  test('setup new server', function (t) {
    mr({
      port: common.port,
      throwOnUnmatched: true
    }, function (err, s) {
      t.ifError(err, 'registry mocked successfully')
      server = s
  
      server.get('/good-night')
        .many({ min: 1, max: 1 })
        .reply(200, oldAndNewMetadata)
  
      server.get('/good-night/-/good-night-1.0.0.tgz')
        .many({ min: 1, max: 1 })
        .replyWithFile(200, newModule)
  
      t.end()
    })
  })
  
  test('install new version', function (t) {
    common.npm(config.concat([
      '--cache-min', 'Infinity',
      'install', 'good-night@1.0.0'
    ]), {stdio: 'inherit'}, function (err, code) {
      if (err) throw err
      t.is(code, 0, 'install succeeded')
  
      t.end()
    })
  })
  
  test('install does not hit server again', function (t) {
    // The mock server route definitions ensure we don't hit the server again
    common.npm(config.concat([
      '--cache-min', 'Infinity',
      'install', 'good-night'
    ]), {stdio: [0, 'pipe', 2]}, function (err, code, stdout) {
      if (err) throw err
      t.is(code, 0, 'install succeeded')
  
      t.match(stdout, /@1\.0\.0/, 'installed latest version')
      server.done()
      t.end()
    })
  })
  
  test('cleanup', function (t) {
    server.close()
    cleanup()
    t.end()
  })
  