sudo: false
language: ruby
cache:
  bundler: true
  directories:
  - $(npm root)
  - ~/bin
script: |
  (
    set -ex
    if [ -n "$RUBOCOP" ]; then
      bundle exec rubocop
    else
      bundle exec image_optim --info
      bundle exec rspec
    fi
  )
before_install: |
  (
    set -ex
    if [ -z "$RUBOCOP" ]; then
      command -v svgo || npm install svgo
      command -v pngout || {
        mkdir -p ~/bin
        curl -L "http://static.jonof.id.au/dl/kenutils/pngout-20130221-linux.tar.gz" | tar -xz -C ~/bin --strip-components 2 --wildcards '*/x86_64/pngout'
      }
    fi
  )
matrix:
  fast_finish: true
  include:
    - env: RAILS_VERSION='~> 3.2'
      rvm: default
    - env: RAILS_VERSION='~> 4.0' SPROCKETS_RAILS_VERSION='~> 2.0'
      rvm: '2'
    - env: RAILS_VERSION='~> 4.0'
      rvm: '2'
    - env: RAILS_VERSION='~> 5.0' SPROCKETS_RAILS_VERSION='~> 2.0'
      rvm: '2.2.2'
    - env: RAILS_VERSION='~> 5.0'
      rvm: '2.2.2'
    - env: RUBOCOP=true
      rvm: '2.2.2'