TravisCI 因无法启动 PhantomJS 而失败

Question

TravisCI 似乎无法启动 PhantomJS 来运行我的 Karma/Jasmine 测试。这是错误日志：

INFO [karma]: Karma v0.12.16 server started at http://localhost:9876/
INFO [launcher]: Starting browser PhantomJS
WARN [watcher]: Pattern "/home/travis/build/fender/dmeapp/config.js" does not match any file.
ERROR [launcher]: Cannot start PhantomJS

INFO [launcher]: Trying to start PhantomJS again (1/2).
ERROR [launcher]: Cannot start PhantomJS

INFO [launcher]: Trying to start PhantomJS again (2/2).
ERROR [launcher]: Cannot start PhantomJS

ERROR [launcher]: PhantomJS failed 2 times (cannot start). Giving up.
Warning: Task "karma:continuous" failed. Use --force to continue.

完整版本可以在这里看到：https://travis-ci.org/fender/dmeapp/builds/29499011 该存储库可在此处获得：https://github.com/fender/dmeapp

我能够在本地运行测试。也许我需要采取一些额外的步骤才能使 PhantomJS 在 TravisCI 实例上可用？

Answer 1

您只需要安装karma-phantomjs-launcher，PhantomJS 就可以在 Travis 上运行。但是，如果您使用 Firefox 作为测试浏览器，则必须包含以下两行：

  - "export DISPLAY=:99.0"
  - "sh -e /etc/init.d/xvfb start"

总而言之，这就是您必须在.travis.yml 文件中包含的内容：

language: node_js
node_js:
  - "0.11"
  - "0.10"

before_script:
  - npm install -g grunt-cli
  - npm install -g bower
  - npm install -g karma
  - npm install karma-phantomjs-launcher -save-dev
  - bower install
  - "export DISPLAY=:99.0"
  - "sh -e /etc/init.d/xvfb start"