CentOS 7 上的 Spectron 无头测试不起作用

Question

环境

Mac OSX 10.11.5 运行ning Vagrant 1.8.4 运行ning 分OS7
节点 v6.4.0
Npm v3.10.3
Electron-prebuilt^1.2.0
Electron-packager^7.6.0
Spectron v3.3.0

运行无头测试，Xvfb

Xvfb :99 -screen 0 1024x768x24 +extension RANDR &
export DISPLAY=':99.0'

设置

我 git cloned electron-quick-start 存储库。
然后通过 electron-packager . MyApp --platform=linux --arch=x64 --prune 构建它（package.json 中的脚本）
然后运行测试：node test_app.js

输出

Running app Main window is visible: true Check text Test failed An element could not be located on the page using the given search parameters. Stopping the application

补充说明

一切似乎都在工作，因为 Main window 可见性测试 returns 正确，但 Spectron 似乎无法像我预期的那样查询 HTML 的元素。

为什么我得到：An element could not be located on the page using the given search？

此外，标题为空。通过删除 getText 测试发现，并断言标题失败，说“”不等于 "Hello World!"

我还通过为 Mac OS 构建并检查它来确认应用程序运行s，但我想做的是运行无头测试我的 CI 设置。

片段

index.html / test_app.js

//A simple test to verify a visible window is opened with a title
var Application = require('spectron').Application
var assert = require('assert')

var app = new Application({
  path: '/home/vagrant/electron-quick-start/MyApp-linux-x64/MyApp'})

console.log('Running app')

app.start()
    .then(function () {
    return app.browserWindow.isVisible()
    })
    .then(function (isVisible) {
    console.log('Main window is visible: ' + isVisible)
    })
    .then(function () {
    console.log('Check text')
    return app.client.getText('#par')    
    })
    .then(function (text) {
    assert.equal(text, "Does this work?")
    })
    .then(function () {
    console.log('Check the windows title')
    return app.client.getTitle()
    })
    .then(function (title) {
    assert.equal(title, 'Hello World!')
    })
    .then(function () {
    console.log('Stopping the application')
    return app.stop()
    })
    .catch(function (error) {
    //Log any failures
    console.error('Test failed', error.message)
    console.log('Stopping the application')
    return app.stop()
    })

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Hello World!</title>
  </head>
  
  <body>
    <p id="par">Does this work?</p>
  </body>
  
  <script>
    require('./renderer.js')
  </script>
</html>

xwd截图

运行应用：npm start

输出

>electron-quick-start@1.0.0 start /home/vagrant/electron-quick-start

>electron .

Xlib: extension "RANDR" missing on display ":99.0".

生成的截图

xwd -root -silent > grab.xwd
convert grab.xwd grab.jpg

Answer 1

我将 test_app.js 更改为使用箭头函数，也许我修复了过程中的一些细微错误，但现在可以使用了！

输出

Running app...

Main window is visible: true

Checking text...

Text: Does this work?

Checking the windows title...

Title: Hello World!

Stopping the application

新建test_app.js

//A simple test to verify a visible window is opened with a title
var Application = require('spectron').Application
var assert = require('assert')

var app = new Application({
  path: '/home/vagrant/electron-quick-start/MyApp-linux-x64/MyApp'})

console.log('Running app...')

app.start()
    .then(() => app.browserWindow.isVisible())
    .then((isVisible) => console.log('Main window is visible: ', isVisible))
    .then(() => {
        console.log('Checking text...')
        return app.client.getText('#par')    
    })
    .then((text) => {
        assert.equal(text, "Does this work?")
        console.log("Text: ", text)   
    })
    .then(() => {
        console.log('Checking the windows title...')
        return app.client.getTitle()
    })
    .then((title) => {
        assert.equal(title, 'Hello World!')
        console.log("Title: ", title)
    })
    .then(() => {
        console.log('Stopping the application')
        return app.stop()
    })
    .catch((error) => {
        //Log any failures
        console.error('Test failed: ', error.message)
        console.log('Stopping the application')
        return app.stop()
    })

Answer 2

对我来说，问题是服务器有一个无效的 SSL 证书，chrome 不会在无头模式下自动接受它（在非无头模式下会）。

更多信息在这里：https://groups.google.com/a/chromium.org/forum/#!topic/headless-dev/eiudRsYdc3A

CentOS 7 上的 Spectron 无头测试不起作用

Spectron Headless Testing on CentOS 7 not working

linux

testing

node.js

electron