Mini Shell

#!/opt/alt/alt-nodejs6/root/usr/bin/node
'use strict'
var loadFromDir = require('tacks/load-from-dir.js')

process.exit(main(process.argv.slice(2)))

function main (argv) {
  if (argv.length !== 1) {
    console.error('Usage: maketest <fixturedir>')
    return 1
  }
  var fixturedir = process.argv[2]

  console.log(generateFromDir(fixturedir))
  return 0
}

function indent (ind, str) {
  return str.replace(/\n/g, '\n' + ind)
}

function generateFromDir (dir) {
  var tacks = loadFromDir(dir)
  return `'use strict'
var path = require('path')
var test = require('tap').test
var mr = require('npm-registry-mock')
var Tacks = require('tacks')
var File = Tacks.File
var Symlink = Tacks.Symlink
var Dir = Tacks.Dir
var extend = Object.assign || require('util')._extend
var common = require('../common-tap.js')

var basedir = path.join(__dirname, path.basename(__filename, '.js'))
var testdir = path.join(basedir, 'testdir')
var cachedir = path.join(basedir, 'cache')
var globaldir = path.join(basedir, 'global')
var tmpdir = path.join(basedir, 'tmp')

var conf = {
  cwd: testdir,
  env: extend(extend({}, process.env), {
    npm_config_cache: cachedir,
    npm_config_tmp: tmpdir,
    npm_config_prefix: globaldir,
    npm_config_registry: common.registry,
    npm_config_loglevel: 'warn'
  })
}

var server
var fixture = new Tacks(Dir({
  cache: Dir(),
  global: Dir(),
  tmp: Dir(),
  testdir: ${indent('  ', tacks.fixture.toSource())}
}))

function setup () {
  cleanup()
  fixture.create(basedir)
}

function cleanup () {
  fixture.remove(basedir)
}

test('setup', function (t) {
  setup()
  mr({port: common.port, throwOnUnmatched: true}, function (err, s) {
    if (err) throw err
    server = s
    t.done()
  })
})

test('example', function (t) {
  common.npm(['install'], conf, function (err, code, stdout, stderr) {
    if (err) throw err
    t.is(code, 0, 'command ran ok')
    t.comment(stdout.trim())
    t.comment(stderr.trim())
    // your assertions here
    t.done()
  })
})

test('cleanup', function (t) {
  server.close()
  cleanup()
  t.done()
})\n`
}