[英]Angular unit test stuck on GitHub Action CI
我正在尝试使用 GitHub 操作在默认 Angular 项目上设置 CI 管道。 我可以在本地成功运行单元测试,但遇到 GitHub Actions 的问题。 我需要更改什么才能使其成功运行?
name: Node.js CI
on:
push:
branches: [ master ]
pull_request:
branches: [ master ]
jobs:
build:
runs-on: ubuntu-latest
strategy:
matrix:
node-version: [10.x, 12.x, 14.x]
steps:
- uses: actions/checkout@v2
- name: Use Node.js ${{ matrix.node-version }}
uses: actions/setup-node@v1
with:
node-version: ${{ matrix.node-version }}
- run: npm ci
- run: npm run build --if-present
- run: npm test
这是此步骤的日志 output
> ng test
Compiling @angular/core/testing : es2015 as esm2015
Compiling @angular/platform-browser/testing : es2015 as esm2015
Compiling @angular/compiler/testing : es2015 as esm2015
Compiling @angular/platform-browser-dynamic/testing : es2015 as esm2015
Compiling @angular/common/testing : es2015 as esm2015
Compiling @angular/router/testing : es2015 as esm2015
- Generating browser application bundles...
17 12 2020 20:14:02.566:WARN [karma]: No captured browser, open http://localhost:9876/
17 12 2020 20:14:02.708:INFO [karma-server]: Karma v5.1.1 server started at http://localhost:9876/
17 12 2020 20:14:02.709:INFO [launcher]: Launching browsers Chrome with concurrency unlimited
17 12 2020 20:14:02.713:INFO [launcher]: Starting browser Chrome
✔ Browser application bundle generation complete.
- Generating browser application bundles...
✔ Browser application bundle generation complete.
17 12 2020 20:14:07.847:WARN [karma]: No captured browser, open http://localhost:9876/
17 12 2020 20:14:08.707:ERROR [launcher]: Cannot start Chrome
[2646:2646:1217/201408.612463:ERROR:browser_main_loop.cc(1434)] Unable to open X display.
17 12 2020 20:14:08.707:ERROR [launcher]: Chrome stdout:
17 12 2020 20:14:08.707:ERROR [launcher]: Chrome stderr: [2646:2646:1217/201408.612463:ERROR:browser_main_loop.cc(1434)] Unable to open X display.
17 12 2020 20:14:08.712:INFO [launcher]: Trying to start Chrome again (1/2).
17 12 2020 20:14:08.860:ERROR [launcher]: Cannot start Chrome
[2682:2682:1217/201408.854964:ERROR:browser_main_loop.cc(1434)] Unable to open X display.
17 12 2020 20:14:08.861:ERROR [launcher]: Chrome stdout:
17 12 2020 20:14:08.861:ERROR [launcher]: Chrome stderr: [2682:2682:1217/201408.854964:ERROR:browser_main_loop.cc(1434)] Unable to open X display.
17 12 2020 20:14:08.863:INFO [launcher]: Trying to start Chrome again (2/2).
17 12 2020 20:14:09.006:ERROR [launcher]: Cannot start Chrome
[2711:2711:1217/201409.000191:ERROR:browser_main_loop.cc(1434)] Unable to open X display.
17 12 2020 20:14:09.006:ERROR [launcher]: Chrome stdout:
17 12 2020 20:14:09.007:ERROR [launcher]: Chrome stderr: [2711:2711:1217/201409.000191:ERROR:browser_main_loop.cc(1434)] Unable to open X display.
17 12 2020 20:14:09.008:ERROR [launcher]: Chrome failed 2 times (cannot start). Giving up.
你需要安装 puppeteer 等等一些额外的配置
npm install puppeteer --save-dev
在 karma.conf.js 下restartOnFileChange: true,
添加
customLaunchers: {
ChromeHeadlessCustom: {
base: 'ChromeHeadless',
flags: ['--no-sandbox', '--disable-gpu']
}
}
在 package.json 中将测试脚本更新为"test": "ng test --watch=false --browsers=ChromeHeadlessCustom",
如果您不想按照其他答案中的建议更改 package.json、karma.conf 或安装 Puppeteer(无论是什么),您只需修改您的 --CBFD04EBFECZ 操作即可通过--watch=false
和--browsers=ChromeHeadless
标志到底层脚本。
jobs:
build:
steps:
- run: npm test -- --watch=false --browsers=ChromeHeadless
第一个“浮动” --
很重要......它告诉 NPM 将任何后续 arguments 传递给它正在调用的脚本,而不是尝试根据 npm 评估它们。 所以如果npm test
调用ng test
,上面实际上会调用ng test --watch=false --browsers=ChromeHeadless
。
--watch=false
将修复“运行永无止境”的问题,这是由ng test
监视文件更改以触发测试重新运行引起的。
--browsers=ChromeHeadless
将修复 GitHub 操作无法在没有显示的系统上运行完整的 Chrome 浏览器的事实(因此错误 output 中的“无法打开 X 显示”。)因此,而不是运行完整的 Chrome,它将运行一个特殊的无头版本来模拟显示部分。
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