Question

我在从Protractor 2.0升级到Protractor 2.1时遇到了麻烦，并怀疑使用Protractor 2.1和CucumberJS存在问题。当我编辑package.json以降级到Protractor 2.0.0并重新安装节点包时，问题就解决了。什么导致Protractor 2.1.0中的错误？如何重写我的项目以使用Protractor 2.1.0和Cucumber JS？

我的项目文件及其内容如下：

/路径/到/ myproject的/的 conf.js

exports.config = {
  sauceUser: process.env.SAUCE_USERNAME,
  sauceKey: process.env.SAUCE_ACCESS_KEY,
  specs: [
    'features/*.feature'
  ],
  multiCapabilities: [
    {
      'browserName': 'chrome'
    }
  ],
  framework: 'cucumber',
  cucumberOpts: {
    require: 'features/stepDefinitions.js',
    format: 'summary'
  }
};

/路径/到/ myproject的/ 功能/ demo.feature

Feature: Refund item

  Scenario: Jeff returns a faulty microwave
    Given Jeff has bought a microwave for $100
    And he has a receipt
    When he returns the microwave
    Then Jeff should be refunded $100

/路径/到/ myproject的/ 功能/ stepDefinitions.js

module.exports = function() {
  this.Given(/^Jeff has bought a microwave for \$(\d+)$/, function (arg1, callback) {
    // Write code here that turns the phrase above into concrete actions
    callback.pending();
  });

  this.Given(/^he has a receipt$/, function (callback) {
    // Write code here that turns the phrase above into concrete actions
    callback.pending();
  });

  this.When(/^he returns the microwave$/, function (callback) {
    // Write code here that turns the phrase above into concrete actions
    callback.pending();
  });

  this.Then(/^Jeff should be refunded \$(\d+)$/, function (arg1, callback) {
    // Write code here that turns the phrase above into concrete actions
    callback.pending();
  });
};

/路径/到/ myproject的/的的package.json

{
  "name": "strato-remake",
  "version": "1.0.0",
  "description": "",
  "main": "conf.js",
  "dependencies": {
  },
  "devDependencies": {
    "cucumber": "0.4.9",
    "protractor": "2.1.0"
  },
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC"
}

安装节点包并运行Protractor时：

$ npm install
$ $(npm bin)/protractor conf.js

以下错误将打印到终端：

Using SauceLabs selenium server at http://ondemand.saucelabs.com:80/wd/hub
[launcher] Running 1 instances of WebDriver
[launcher] Error: TypeError: Cannot read property 'apply' of undefined
  at formatter.handleBeforeFeatureEvent (/path/to/myproject/node_modules/protractor/lib/frameworks/cucumber.js:83:41)
  at /path/to/myproject/node_modules/protractor/lib/frameworks/cucumber.js:153:15
  at Function.promise (/path/to/myproject/node_modules/protractor/node_modules/q/q.js:650:9)
  at /path/to/myproject/node_modules/protractor/lib/frameworks/cucumber.js:147:14
  at _fulfilled (/path/to/myproject/node_modules/protractor/node_modules/q/q.js:797:54)
  at self.promiseDispatch.done (/path/to/myproject/node_modules/protractor/node_modules/q/q.js:826:30)
  at Promise.promise.promiseDispatch (/path/to/myproject/node_modules/protractor/node_modules/q/q.js:759:13)
  at /path/to/myproject/node_modules/protractor/node_modules/q/q.js:525:49
  at flush (/path/to/myproject/node_modules/protractor/node_modules/q/q.js:108:17)
  at process._tickCallback (node.js:355:11)

[launcher] Process exited with error code 100

但是，如果我编辑package.json以降级到Protractor 2.0.0，并再次安装节点包：

"devDependencies": {
  "cucumber": "0.4.9",
  "protractor": "2.0.0"
},

当我运行Protractor时它会起作用：

$ $(npm bin)/protractor conf.js

Using SauceLabs selenium server at http://ondemand.saucelabs.com:80/wd/hub
[launcher] Running 1 instances of WebDriver
1 scenario (1 pending)
4 steps (1 pending, 3 skipped)
SauceLabs results available at http://saucelabs.com/jobs/8a85b85e7a1c5dd344e694e392ec90c3
[launcher] 0 instance(s) of WebDriver still running
[launcher] chrome #1 passed

如何重写此项目以与Protractor 2.1.0和Cucumber JS兼容？谢谢！

Answer 1

这是Protractor中的一个错误的结果，由this pull request修复。要使用该特定提交，请将package.json更改为包括：

"devDependencies": {
  "cucumber": "0.4.9",
  "protractor": "git+https://github.com/angular/protractor.git#0262268fa43b9eefac815d986740efa07bb15818"
},

将Protractor 2.1.0与CucumberJS

1 个答案: