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index.js
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index.js
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require('es6-promise').polyfill()
var co = require('co')
var API = {
given: function (pattern, callback) {
this.Given(pattern, wrap(callback))
},
when: function (pattern, callback) {
this.When(pattern, wrap(callback))
},
then: function (pattern, callback) {
this.Then(pattern, wrap(callback))
},
before: function (callback) {
var args = [].slice.call(arguments)
this.Before.apply(this, args.concat([wrap(args.pop())]))
},
after: function (callback) {
var args = [].slice.call(arguments)
this.After.apply(this, args.concat([wrap(args.pop())]))
},
afterAll: function (callback) {
this.registerHandler('AfterFeatures', wrap(callback))
},
beforeAll: function (callback) {
var args = [].slice.call(arguments)
this.Before.apply(this, args.concat([wrap(once(args.pop()))]))
},
hook: function (name, callback) {
this.registerHandler(name, wrap(callback))
},
around: function (callback) {
var finish = function () {
throw new Error('Must yield/call run().')
}
var wrapped = wrap(callback)
this.Around(function (run) {
wrapped(function () {
return new Promise(function (resolve, reject) {
run(function (fin) {
finish = fin
resolve()
})
})
}, function () {
finish()
})
})
}
}
var PENDING = {}
module.exports = function steps () {
var hooks = []
function artstepDefinitionsWrapper () {
for (var i = 0; i < hooks.length; i++) hooks[i].call(this)
}
function addAPI (key, f) {
artstepDefinitionsWrapper[key] =
artstepDefinitionsWrapper[key.charAt(0).toUpperCase() + key.substr(1)] =
function () {
var args = [].slice.call(arguments)
hooks.push(function () {
f.apply(this, args)
})
return this
}
}
for (var key in API) {
if (Object.hasOwnProperty.call(API, key)) {
addAPI(key, API[key])
}
}
return artstepDefinitionsWrapper
}
exports.PENDING = PENDING
function wrap (fn) {
fn = fn || pending
var wrappedFunction = function () {
var callback = arguments[arguments.length - 1]
var world = this
var args = [].slice.call(arguments)
return co(function () {
world.PENDING = PENDING
return fn.apply(world, args)
})
.then(function (result) {
if (result === PENDING) {
callback.pending()
}
})
}
Object.defineProperty(wrappedFunction, 'length', { value: fn.length })
return wrappedFunction
}
function pending () {
return PENDING
}
function once (f) {
var run = false
var result
return function () {
if (!run) {
run = true
result = f.apply(this, arguments)
}
return result
}
}