node/deps/npm/test/tap/noargs-install-config-save.js

var common = require('../common-tap.js')
var test = require('tap').test
var path = require('path')
var fs = require('fs')
var rimraf = require('rimraf')
var mkdirp = require('mkdirp')

var mr = require("npm-registry-mock")

var pkg = path.resolve(process.env.npm_config_tmp || '/tmp',
  'noargs-install-config-save')

function writePackageJson() {
  rimraf.sync(pkg)
  mkdirp.sync(pkg)
  mkdirp.sync(pkg + "/cache")

  fs.writeFileSync(pkg + "/package.json", JSON.stringify({
    "author": "Rocko Artischocko",
    "name": "noargs",
    "version": "0.0.0",
    "devDependencies": {
      "underscore": "1.3.1"
    }
  }), "utf8")
}

var env = {
  'npm_config_save': true,
  'npm_config_registry': common.registry,
  'npm_config_cache': pkg + '/cache',
  HOME: process.env.HOME,
  Path: process.env.PATH,
  PATH: process.env.PATH
}
var OPTS = {
  cwd: pkg,
  env: env
}

test("does not update the package.json with empty arguments", function (t) {
  writePackageJson()
  t.plan(2)

  mr({ port: common.port }, function (er, s) {
    common.npm('install', OPTS, function (er, code, stdout, stderr) {
      if (er) throw er
      t.is(code, 0)
      if (code !== 0) {
        console.error('#', stdout)
        console.error('#', stderr)
      }
      var text = JSON.stringify(fs.readFileSync(pkg + '/package.json', 'utf8'))
      s.close()
      t.ok(text.indexOf("\"dependencies") === -1)
    })
  })
})

test("updates the package.json (adds dependencies) with an argument", function (t) {
  writePackageJson()
  t.plan(2)

  mr({ port: common.port }, function (er, s) {
    common.npm(['install', 'underscore'], OPTS, function (er, code, stdout, stderr) {
      if (er) throw er
      t.is(code, 0)
      s.close()
      var text = JSON.stringify(fs.readFileSync(pkg + "/package.json", "utf8"))
      t.ok(text.indexOf("\"dependencies") !== -1)
    })
  })
})

test("cleanup", function (t) {
  rimraf.sync(pkg + "/cache")
  t.end()
})