version: 2.1
matrix_rubyversions: &matrix_rubyversions
  matrix:
    parameters:
      rubyversion: ["2.5", "2.6", "2.7", "3.0"]
# Default version of ruby to use for lint and publishing
default_rubyversion: &default_rubyversion "2.7"

executors:
  ruby:
    parameters:
      rubyversion:
        type: string
        default: *default_rubyversion
    docker:
      - image: circleci/ruby:<< parameters.rubyversion >>

jobs:
  run-tests:
    parameters:
      rubyversion:
        type: string
        default: *default_rubyversion
    executor:
      name: ruby
      rubyversion: "<< parameters.rubyversion >>"
    steps:
      - checkout
      - restore_cache:
          keys:
            - gems-v2-{{ checksum "Gemfile" }}
            - gems-v2-
      - run: bundle check || bundle install
      - save_cache:
          key: gems-v2--{{ checksum "Gemfile" }}
          paths:
            - vendor/bundle
      - run: bundle exec rake spec

workflows:
  tests:
    jobs:
      - run-tests:
          <<: *matrix_rubyversions