th/test/test.js

th.en - make it painless to adapt between callbacks and promises

var chai = require('chai')
chai.should()
var Q = require('q')

describe('then', function () {
  var then = require('../')

  it('goes to promises from callbacks', function (done) {


    function oldschool(cb) {
      cb(null, 'foo')
    }


    oldschool(then())
    then(function (val) {
      val.should.equal('foo')
    })
    .then(done, done)

  })

  it('callbacks to promises error case', function (done) {

    function old(cb) {
      cb(new Error('woah!'))
    }

    old(then())
    then(function (val) {
      done(new Error('should not be resolved'))
    }, function (err) {
      err.message.should.equal('woah!')
    })
    .then(done, done)
  })

  it('goes to callbacks from promises', function (done) {

    then.callback(Q(), done)

  })


  it('promises to callbacks error case', function (done) {
    then.callback(Q.reject(new Error('it\'s not a big truck')), function (err, val) {
      err.message.should.equal('it\'s not a big truck')
      done()
    })
  })

  it('has an alias for silly npm', function () {
    var th = then
    th.en.should.equal(then)
  })

})