Travis CI Overview
Travis CI is a hosted continuous integration service for the open source community. It is integrated with GitHub and offers first class support for:
Our CI environment provides multiple runtimes (e.g. Node.js or PHP versions), data stores and so on. Because of this, hosting your project on travis-ci.org means you can effortlessly test your library or applications against multiple runtimes and data stores without even having all of them installed locally.
travis-ci.org originally started as a service for the Ruby community in early 2011 but has added support for many other technologies since then.
Step one: Sign in
To get started with Travis CI, sign in through GitHub OAuth. Go to Travis CI and follow the Sign In link at the top.
GitHub will ask you to grant read and write access. Travis CI needs write access for setting up service hooks for your repositories when you request it, but it won't touch anything else.
Step two: Activate GitHub Service Hook
Once you're signed in go to your profile page. You'll see a list of your repositories. Flip the on/off switch for each repository that you want to hook up on Travis CI. Then visit the GitHub service hooks page for that project and paste your GitHub username and Travis token into the settings for the Travis service if it is not already pre-filled.
Step three: Add .travis.yml file to your repository
In order for Travis to build your project, you need to tell the system a little bit about it. To do so, add .travis.yml to the root of your repository. We will only cover basic .travis.yml options in this guide. The most important one is the language key. It tells Travis what builder to pick. Ruby projects typically use different build tools and practices than Clojure or PHP projects do, so Travis needs to know what to do.
.travis.yml is not in the repository, is misspelled or is not valid YAML, travis-ci.org will ignore it, assume Ruby as the language and use default values for everything.
Here are some basic .travis.yml examples:
language: c compiler: - gcc - clang # Change this to your needs script: ./configure && make
Learn more about .travis.yml options for C projects
language: cpp compiler: - gcc - clang # Change this to your needs script: ./configure && make
Learn more about .travis.yml options for C++ projects
For projects using Leiningen 1:
language: clojure jdk: - oraclejdk7 - openjdk7 - openjdk6
For projects using Leiningen 2:
language: clojure lein: lein2 jdk: - openjdk7 - openjdk6
Learn more about .travis.yml options for Clojure projects
language: erlang otp_release: - R15B02 - R15B01 - R14B04 - R14B03
Learn more about .travis.yml options for Erlang projects
Learn more about .travis.yml options for Haskell projects
Learn more about .travis.yml options for Go projects
language: groovy jdk: - oraclejdk7 - openjdk7 - openjdk6
Learn more about .travis.yml options for Groovy projects
language: java jdk: - oraclejdk7 - openjdk7 - openjdk6
Learn more about .travis.yml options for Java projects
language: node_js node_js: - "0.10" - "0.8" - "0.6"
Learn more about .travis.yml options for Node.js projects
Learn more about .travis.yml options for Objective-C projects
language: perl perl: - "5.16" - "5.14" - "5.12"
Learn more about .travis.yml options for Perl projects
language: php php: - "5.5" - "5.4" - "5.3"
Learn more about .travis.yml options for PHP projects
language: python python: - "3.3" - "2.7" - "2.6" # command to install dependencies, e.g. pip install -r requirements.txt --use-mirrors install: PLEASE CHANGE ME # command to run tests, e.g. python setup.py test script: PLEASE CHANGE ME
Learn more about .travis.yml options for Python projects
language: ruby rvm: - "1.8.7" - "1.9.2" - "1.9.3" - jruby-18mode # JRuby in 1.8 mode - jruby-19mode # JRuby in 1.9 mode - rbx # uncomment this line if your project needs to run something other than `rake`: # script: bundle exec rspec spec
Learn more about .travis.yml options for Ruby projects
language: scala scala: - "2.9.2" - "2.8.2" jdk: - oraclejdk7 - openjdk7 - openjdk6
Learn more about .travis.yml options for Scala projects
Validate Your .travis.yml
travis-lint requires Ruby 1.8.7+ and RubyGems installed. Get it with
gem install travis-lint
and run it on your
# inside a repository with .travis.yml travis-lint # from any directory travis-lint [path to your .travis.yml]
travis-lint will check things like
.travis.ymlfile is valid YAML
languagekey is present
- The runtime versions (Ruby, PHP, OTP, etc) specified are supported in the Travis CI Environment
- That you are not using deprecated features or runtime aliases
and so on.
travis-lint is your friend, use it.
Step four: Trigger Your First Build With a Git Push
Once GitHub hook is set up, push your commit that adds .travis.yml to your repository. That should add a build into one of the queues on Travis CI and your build will start as soon as one worker for your language is available.
To start a build you can either commit and push something to your repository, or you can go to your GitHub service hooks page and use the "Test Hook" button for Travis. Please note that you cannot trigger your first build using Test Hook button. It has to be triggered by a push to your repository.
Step five: Tweaking your build configuration
Chances are, your project requires some customization to the build process. Maybe you need to create a database before running your tests or you use build tools different from what Travis defaults are. Worry not. Travis lets you override almost everything. See Build Configuration to learn more.
After making some changes to the
.travis.yml, don't forget to check that it is valid YAML and run
travis-lint to validate it.
Step six: Learn more
A Travis worker comes with a good amount of services you might depend on, including MySQL, PostgreSQL, MongoDB, Redis, CouchDB, RabbitMQ, memcached and others.
Step seven: We are here to help!
For any kind of questions feel free to join our IRC channel #travis on chat.freenode.net. We're there to help :)