moduloteste/npm-registry-client/test/dist-tags-fetch.js

um modulo de teste

var test = require('tap').test

var server = require('./lib/server.js')
var common = require('./lib/common.js')
var client = common.freshClient()

function nop () {}

var BASE_URL = 'http://localhost:1337/'
var URI = '/-/package/underscore/dist-tags'
var TOKEN = 'foo'
var AUTH = {
  token: TOKEN
}
var PACKAGE = 'underscore'
var PARAMS = {
  'package': PACKAGE,
  auth: AUTH
}

test('distTags.fetch call contract', function (t) {
  t.throws(function () {
    client.distTags.fetch(undefined, AUTH, nop)
  }, 'requires a URI')

  t.throws(function () {
    client.distTags.fetch([], PARAMS, nop)
  }, 'requires URI to be a string')

  t.throws(function () {
    client.distTags.fetch(BASE_URL, undefined, nop)
  }, 'requires params object')

  t.throws(function () {
    client.distTags.fetch(BASE_URL, '', nop)
  }, 'params must be object')

  t.throws(function () {
    client.distTags.fetch(BASE_URL, PARAMS, undefined)
  }, 'requires callback')

  t.throws(function () {
    client.distTags.fetch(BASE_URL, PARAMS, 'callback')
  }, 'callback must be function')

  t.throws(
    function () {
      var params = {
        auth: AUTH
      }
      client.distTags.fetch(BASE_URL, params, nop)
    },
    {
      name: 'AssertionError',
      message: 'must pass package name to distTags.fetch'
    },
    'distTags.fetch must include package name'
  )

  t.throws(
    function () {
      var params = {
        'package': PACKAGE
      }
      client.distTags.fetch(BASE_URL, params, nop)
    },
    { name: 'AssertionError', message: 'must pass auth to distTags.fetch' },
    'distTags.fetch must include auth'
  )

  t.end()
})

test('fetch dist-tags for a package', function (t) {
  server.expect('GET', URI, function (req, res) {
    t.equal(req.method, 'GET')

    var b = ''
    req.setEncoding('utf8')
    req.on('data', function (d) {
      b += d
    })

    req.on('end', function () {
      t.notOk(b, 'no request body')

      res.statusCode = 200
      res.json({ a: '1.0.0', b: '2.0.0', _etag: 'xxx' })
    })
  })

  client.distTags.fetch(BASE_URL, PARAMS, function (error, data) {
    t.ifError(error, 'no errors')
    t.same(data, { a: '1.0.0', b: '2.0.0' }, 'etag filtered from response')

    t.end()
  })
})