✏ EDIT: maketest

#!/usr/bin/env node
'use strict'
const 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
  }
  const fixturedir = process.argv[2]

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

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

function generateFromDir (dir) {
  const tacks = loadFromDir(dir)
  return `'use strict'
const path = require('path')
const test = require('tap').test
const Tacks = require('tacks')
const File = Tacks.File
const Symlink = Tacks.Symlink
const Dir = Tacks.Dir
const common = require('../common-tap.js')

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

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

const 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', t => {
  setup()
  return common.fakeRegistry.listen()
})

test('example', t => {
  return common.npm(['install'], conf).then(([code, stdout, stderr]) => {
    t.is(code, 0, 'command ran ok')
    t.comment(stdout.trim())
    t.comment(stderr.trim())
    // your assertions here
  })
})

test('cleanup', t => {
  common.fakeRegistry.close()
  cleanup()
  t.done()
})\n`
}

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