language: ruby
sudo: false
cache:
  directories:
    - vendor/bundle
script: "bundle exec rake"
# Source: <https://docs.travis-ci.com/user/languages/ruby/#bundler-20>
before_install:
  - gem update --system '2.7.8' --no-document
  - gem uninstall -v '>= 2' -i $(rvm gemdir)@global -ax bundler || true
  - gem install bundler -v '< 2' --no-document
install: "bundle install --jobs=3 --retry=3 --path vendor/bundle"

rvm:
  - 2.6.1
  - 2.5.1
  - 2.4.4
  - 2.3.7

env:
  - TEST_FRAMEWORK=minitest
  - TEST_FRAMEWORK=test_unit

gemfile:
  - gemfiles/rails_4_2.gemfile
  - gemfiles/rails_5_0.gemfile
  - gemfiles/rails_5_1.gemfile
  - gemfiles/rails_5_2.gemfile