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我有一些使用像黃瓜和生菜這樣的BDD工具的經驗。我目前正在構建一個Phonegap應用程序，並且我想開始使用Cucumber.js爲它創建驗收測試。不幸的是我有一個問題。ZombieJS在Cucumber.js場景中的回調問題
下面是基本功能的文件，我扔在一起：
Feature: Authentication
As a user
I want to be able to log in and out
Scenario: Logging in
Given I am not logged in
And I am on the page "login"
When I fill in the "username" field with "student"
And I fill in the "password" field with "password"
And I click the "LOG IN" button
Then I should see the text "STUDENT"
這是我world.js：
var zombie = require('zombie');
var World = function World(callback) {
"use strict";
this.browser = new zombie(); // this.browser will be available in step definitions
this.visit = function (url, callback) {
this.browser.visit(url, callback);
};
callback(); // tell Cucumber we're finished and to use 'this' as the world instance
};
exports.World = World;
這裏是我的步驟定義：
var wrapper = function() {
"use strict";
this.World = require("../support/world.js").World; // overwrite default World constructor
this.Given(/^I am not logged in$/, function (callback) {
// Clear local storage
this.browser.localStorage("localhost:9001").clear();
callback();
});
this.Given(/^I am on the page "([^"]*)"$/, function (page, callback) {
// Visit page
this.browser.visit('http://localhost:9001/app/index.html#' + page, callback);
});
};
module.exports = wrapper;
我已經建立了一個Grunt任務，首先在端口9001上運行連接服務器，然後運行Cucumber場景秒。 documentation for Cucumber.js implies this should work，但它在第二步失敗。
以下是錯誤消息我得到：
Running "connect:cucumber" (connect) task
Started connect web server on http://localhost:9001
Running "cucumberjs:src" (cucumberjs) task
.Cannot call method 'add' of undefined TypeError: Cannot call method 'add' of undefined
at <anonymous>:10:711
at <anonymous>:10:874
at <anonymous>:10:1224
at Contextify.sandbox.run (/Users/matthewdaly/Projects/myapp/node_modules/zombie/node_modules/jsdom/node_modules/contextify/lib/contextify.js:12:24)
at DOMWindow.window._evaluate (/Users/matthewdaly/Projects/myapp/node_modules/zombie/lib/zombie/window.js:188:25)
at Object.HTML.languageProcessors.javascript (/Users/matthewdaly/Projects/myapp/node_modules/zombie/lib/zombie/scripts.js:23:21)
at define.proto._eval (/Users/matthewdaly/Projects/myapp/node_modules/zombie/node_modules/jsdom/lib/jsdom/level2/html.js:1480:47)
at loaded (/Users/matthewdaly/Projects/myapp/node_modules/zombie/lib/zombie/scripts.js:74:23)
at /Users/matthewdaly/Projects/myapp/node_modules/zombie/node_modules/jsdom/lib/jsdom/level2/html.js:76:20
at Object.item.check (/Users/matthewdaly/Projects/myapp/node_modules/zombie/node_modules/jsdom/lib/jsdom/level2/html.js:345:11)
FUUUU
(::) failed steps (::)
TypeError: Cannot call method 'add' of undefined
at <anonymous>:10:711
at <anonymous>:10:874
at <anonymous>:10:1224
at Contextify.sandbox.run (/Users/matthewdaly/Projects/myapp/node_modules/zombie/node_modules/jsdom/node_modules/contextify/lib/contextify.js:12:24)
at DOMWindow.window._evaluate (/Users/matthewdaly/Projects/myapp/node_modules/zombie/lib/zombie/window.js:188:25)
at Object.HTML.languageProcessors.javascript (/Users/matthewdaly/Projects/myapp/node_modules/zombie/lib/zombie/scripts.js:23:21)
at define.proto._eval (/Users/matthewdaly/Projects/myapp/node_modules/zombie/node_modules/jsdom/lib/jsdom/level2/html.js:1480:47)
at loaded (/Users/matthewdaly/Projects/myapp/node_modules/zombie/lib/zombie/scripts.js:74:23)
at /Users/matthewdaly/Projects/myapp/node_modules/zombie/node_modules/jsdom/lib/jsdom/level2/html.js:76:20
at Object.item.check (/Users/matthewdaly/Projects/myapp/node_modules/zombie/node_modules/jsdom/lib/jsdom/level2/html.js:345:11)
如果我的第二個步驟後體內插入callback();，它傳遞。我不確定發生了什麼事。爲什麼這種情況會失敗？該應用程序本身按預期工作。看起來第二步的回調似乎永遠不會發射。