问题描述
CucumberJS和Jasmine是互斥的;您将无法在黄瓜步骤中使用Jasmine的期望。您要做的是加载一个单独的期望模块。我建议柴与应许的插件。(chai-as-promise简化了围绕诺言编写期望的过程。Protractor重写了expect()
Jasmine
的功能以在后台为您执行此操作)您很可能希望在自己的世界中执行此操作,因为这是提供访问权限的最简单方法在您的步骤定义中。您的世界看起来像这样:
var World, chai, chaiAsPromised;
chai = require('chai');
chaiAsPromised = require('chai-as-promised');
World = function World(callback) {
chai.use(chaiAsPromised);
this.expect = chai.expect;
callback();
}
module.exports.World = World;
然后在您的“步骤定义”文件中,您只需按照CucumberJS文档加载到“世界”中,您将获得“步骤定义”的范围,以提供对“世界”所有属性的访问:
module.exports = function() {
this.World = require("path/to/world.js").World;
this.Given(/^some precondition$/, function (callback) {
this.expect(true).to.equal(true);
callback();
});
};
现在,进行一些无耻的自我推广:如果您将Protractor与CucumberJS结合使用,我建议您查看一下我帮助构建的名为CukeFarm的模块。它预配置了一些您会发现有用的模块,并且提供了许多可用于大多数项目的常规步骤定义。
解决方法
我希望使用Protractor,CucumberJS和Jasmine来测试我的项目。如何在量角器中同时使用Jasmine和CucumberJS?这是我创建的项目设置:
/ path / to / myproj / protractor.conf.js
exports.config = {
seleniumServerJar: 'node_modules/protractor/selenium/selenium-server-standalone-2.45.0.jar',specs: [
'features/*.feature'
],baseUrl: 'http://localhost:8080',multiCapabilities: [
{
'browserName': 'chrome'
}
],allScriptsTimeout: 380000,getPageTimeout: 20000,framework: 'cucumber',cucumberOpts: {
require: 'features/stepDefinitions.js',format: 'summary'
}
};
如您所见,该项目使用“黄瓜”作为框架。如何与CucumberJS一起添加Jasmine框架?是通过量角器配置文件还是代码中的其他位置?
/ path / to / myproj / 功能/demo.feature
Feature: Some terse yet descriptive text of what is desired
Scenario: Some determinable business situation
Given some precondition
/ path / to / myproj / features / stepDefinitions.js
module.exports = function() {
this.Given(/^some precondition$/,function (callback) {
expect(true).toEqual(true);
callback();
});
};
执行此操作时,未定义“期望”,可能是因为Jasmine尚未集成,并且期望与它一起全局。这是完整的错误消息:
$ $(npm bin)/protractor protractor.conf.js
Starting selenium standalone server...
[launcher] Running 1 instances of WebDriver
Selenium standalone server started at http://192.168.1.115:59957/wd/hub
(::) failed steps (::)
ReferenceError: expect is not defined
at World.<anonymous> (/path/to/myproj/features/stepDefinitions.js:3:5)
at process._tickCallback (node.js:355:11)
Failing scenarios:
/path/to/myproj/features/demo.feature:3 # Scenario: Some determinable business situation
1 scenario (1 failed)
1 step (1 failed)
Shutting down selenium standalone server.
[launcher] 0 instance(s) of WebDriver still running
[launcher] chrome #1 failed 1 test(s)
[launcher] overall: 1 failed spec(s)
[launcher] Process exited with error code 1
/ path / to / myproj / package.json
{
"name": "myproj","version": "1.0.0","description": "","main": "index.js","scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},"author": "","license": "ISC","devDependencies": {
"cucumber": "0.4.9","protractor": "git+https://github.com/angular/protractor.git#0262268fa43b9eefac815d986740efa07bb15818"
}
}
注意:我正在使用package.json中对Protractor
Git存储库的特定提交,因为最新版本(2.1.0)有一个bug,阻止了与CucumberJS的集成。