language: ruby
before_install: gem install bundler -v 2.0.1
rvm:
  - 2.3.8
  - 2.4.9
  - 2.5.7
  - 2.6.5
  - 2.7.0
env:
  - CI=true
gemfile:
  - graphql-1.7.gemfile
  - graphql-latest.gemfile
