language: ruby
rvm:
  - "2.2.8"
  - "2.3.5"
  - "2.4.2"
gemfile:
  - gemfiles/http2.gemfile
  - gemfiles/http3.gemfile
  - gemfiles/http4.gemfile
# uncomment this line if your project needs to run something other than `rake`:
script: bundle exec rspec spec
# workaround for https://github.com/travis-ci/travis-ci/issues/5239:
before_install:
  - gem install bundler