node/deps/npm/test/tap/peer-deps.js

var fs = require('graceful-fs')
var path = require('path')

var mkdirp = require('mkdirp')
var mr = require('npm-registry-mock')
var osenv = require('osenv')
var rimraf = require('rimraf')
var test = require('tap').test

var common = require('../common-tap.js')
var npm = npm = require('../../')

var pkg = path.resolve(__dirname, 'peer-deps')

var expected = [ 'peer dep missing: request@0.9.x, required by npm-test-peer-deps@0.0.0' ]

var json = {
  author: 'Domenic Denicola',
  name: 'npm-test-peer-deps-installer',
  version: '0.0.0',
  dependencies: {
    'npm-test-peer-deps': '*'
  }
}

test('installs the peer dependency directory structure', function (t) {
  mr({ port: common.port }, function (er, s) {
    setup(function (err) {
      if (err) return t.fail(err)

      npm.install('.', function (err) {
        if (err) return t.fail(err)

        npm.commands.ls([], true, function (err, _, results) {
          if (err) return t.fail(err)

          t.deepEqual(results.problems, expected)
          s.close()
          t.end()
        })
      })
    })
  })
})

test('cleanup', function (t) {
  cleanup()
  t.end()
})

function setup (cb) {
  cleanup()
  mkdirp.sync(pkg)
  fs.writeFileSync(
    path.join(pkg, 'package.json'),
    JSON.stringify(json, null, 2)
  )
  process.chdir(pkg)

  var opts = { cache: path.resolve(pkg, 'cache'), registry: common.registry }
  npm.load(opts, cb)
}

function cleanup () {
  process.chdir(osenv.tmpdir())
  rimraf.sync(pkg)
}