language: ruby
sudo: false
rvm:
  - 2.0.0
  - 2.1
  - 2.2
  - ruby-head
gemfile:
  - gemfiles/rails_4.0.gemfile
  - gemfiles/rails_4.1.gemfile
  - gemfiles/rails_4.2.gemfile
  - gemfiles/rails_edge.gemfile
branches:
  only:
    - master
before_script:
  - ruby -e 'puts RbConfig::CONFIG.map { |k, v| "#{k}=#{v}" }.sort'
after_script:
  - bundle exec rake benchmark
matrix:
  allow_failures:
    - rvm: ruby-head
    - gemfile: gemfiles/rails_edge.gemfile
  exclude:
    # Rails 5 requires to run on Ruby 2.2.0 or newer.
    - rvm: 2.0.0
      gemfile: gemfiles/rails_edge.gemfile
    - rvm: 2.1
      gemfile: gemfiles/rails_edge.gemfile