Sample `.travis.yml` for running test on Ruby/Rubymotion gems

travis.yml

# test against both regular Ruby and RubyMotion
language: ruby
cache:
  - bundler

# latest stable/supported versions
rvm:
  - 2.4.6
  - 2.5.5
  - 2.6.3

before_install:
  - (ruby --version)

script:
  - bundle install --jobs=3 --retry=3
  - bundle exec rake spec

jobs:
  include:
    - stage: rubymotion
      os: osx
      osx_image: xcode9.1
      language: objective-c
      rvm: 2.4.2  # pre-installed in image
      cache:
        - bundler
        - cocoapods
      script:
        - sudo chown -R travis ~/Library/RubyMotion
        - sudo mkdir -p ~/Library/RubyMotion/build
        - sudo chown -R travis ~/Library/RubyMotion/build
        - sudo motion update
        - sudo motion repo
        - cd rubymotion
        - bundle install --gemfile=./Gemfile --jobs=3 --retry=3
        - bundle exec rake clean
        - bundle exec rake spec