language: ruby
sudo: false
cache: bundler
script: "bundle exec rake"
# Source: <https://docs.travis-ci.com/user/languages/ruby/#bundler-20>
before_install:
  - gem uninstall -v '>= 2' -i $(rvm gemdir)@global -ax bundler || true
  - gem install bundler -v '< 2'
install: "bundle install --jobs=3 --retry=3"

env:
  - DATABASE_ADAPTER=sqlite3
  - DATABASE_ADAPTER=postgresql

rvm:
  - 2.6.0
  - 2.5.1
  - 2.4.4
  - 2.3.7

gemfile:
  - gemfiles/4.2.gemfile
  - gemfiles/5.0.gemfile
  - gemfiles/5.1.gemfile
  - gemfiles/5.2.gemfile

matrix:
  exclude:
    - rvm: 2.6.0
      gemfile: gemfiles/4.2.gemfile