angular2 +硒webdriver:无法解析'child_process [英] angular2 + selenium webdriver: Can't resolve 'child_process

问题描述

我这样做了:

ng new typescript-selenium-example
npm install selenium-webdriver --save

(此外，我已将chromedriver复制到我的/Application)

(in addition I have copied chromedriver to my /Application)

将app.component.ts更新为:

import { Component } from '@angular/core';
import { Builder, By, until } from 'selenium-webdriver';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  constructor() {
    var driver = new Builder()
    .forBrowser('chrome')
    .build();

    driver.get('http://www.google.com/ncr')
        .then(_ => driver.findElement(By.name('q')).sendKeys('webdriver'))
        .then(_ => driver.findElement(By.name('btnG')).click())
        .then(_ => driver.wait(until.titleIs('webdriver - Google Search'), 1000))
        .then(_ => driver.quit());
    console.log('hi');
  }
  title = 'app works!';
}

得到错误:

ERROR in ./~/selenium-webdriver/net/portprober.js
Module not found: Error: Can't resolve 'child_process' in '/Users/myname/tmp/typescript-selenium-example/node_modules/sele
nium-webdriver/net'
 @ ./~/selenium-webdriver/net/portprober.js 20:11-35
 @ ./~/selenium-webdriver/chrome.js
 @ ./~/selenium-webdriver/index.js
 @ ./src/app/app.component.ts
 @ ./src/app/index.ts
 @ ./src/main.ts
 @ multi main

ERROR in ./~/selenium-webdriver/firefox/binary.js
Module not found: Error: Can't resolve 'child_process' in '/Users/myname/tmp/typescript-selenium-example/node_modules/sele
nium-webdriver/firefox'
 @ ./~/selenium-webdriver/firefox/binary.js 25:14-38
 @ ./~/selenium-webdriver/firefox/index.js
 @ ./~/selenium-webdriver/index.js
 @ ./src/app/app.component.ts
 @ ./src/app/index.ts
 @ ./src/main.ts
 @ multi main

ERROR in ./~/selenium-webdriver/io/exec.js
Module not found: Error: Can't resolve 'child_process' in '/Users/myname/tmp/typescript-selenium-example/node_modules/sele
nium-webdriver/io'
 @ ./~/selenium-webdriver/io/exec.js 20:21-45
 @ ./~/selenium-webdriver/remote/index.js
 @ ./~/selenium-webdriver/index.js
 @ ./src/app/app.component.ts
 @ ./src/app/index.ts
 @ ./src/main.ts
 @ multi main

推荐答案

当我的一个测试中包含错误的beforeEach方法时，也会出现此问题.该函数试图在初始化之前到达函数中的全局变量.也许对您有帮助?

This problem showed up for me also when one of my tests had a bad beforeEach method in it. The function was trying to reach a global variable in the function before it was initialized. Maybe that will help you?

正如评论所指出的那样，当您导入错误时也可能发生这种情况，例如:

As the comments point out, this can also happen when you have a bad import, such as:

import {describe} from 'selenium-webdriver';

或

import {beforeEach} from "selenium-webdriver/testing";

这篇关于angular2 +硒webdriver:无法解析'child_process的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！