language: ruby

before_install:
  - curl -sSl https://raw.githubusercontent.com/chrismo/bundler-fixture/master/only-bundler.sh | bash -s ${BUNDLER_TEST_VERSION} ${RUBYGEMS_VERSION}

install:
  - bundle install --jobs=3 --retry=3 # do not use --deployment and freeze it

matrix:
  include:
    - rvm: 2.3.8
      env:
        - RUBYGEMS_VERSION=2.5.2
        - BUNDLER_TEST_VERSION=1.11.2
    - rvm: 2.3.8
      env:
        - RUBYGEMS_VERSION=2.5.2
        - BUNDLER_TEST_VERSION=1.12.5
    - rvm: 2.4.5
      env:
        - RUBYGEMS_VERSION=2.6.14
        - BUNDLER_TEST_VERSION=1.13.6
    - rvm: 2.4.5
      env:
        - RUBYGEMS_VERSION=2.6.14
        - BUNDLER_TEST_VERSION=1.14.6
    - rvm: 2.5.3
      env:
        - RUBYGEMS_VERSION=2.7.6
        - BUNDLER_TEST_VERSION=1.15.4
    - rvm: 2.5.3
      env:
        - RUBYGEMS_VERSION=2.7.6
        - BUNDLER_TEST_VERSION=1.16.6
    - rvm: 2.5.3
      env:
        - RUBYGEMS_VERSION=2.7.6
        - BUNDLER_TEST_VERSION=1.17.3
    - rvm: 2.4.5
      env:
        - RUBYGEMS_VERSION=2.6.14
        - BUNDLER_TEST_VERSION=1.17.3
    - rvm: 2.3.8
      env:
        - RUBYGEMS_VERSION=2.5.2
        - BUNDLER_TEST_VERSION=1.17.3
    - rvm: 2.6.0
      env:
        - RUBYGEMS_VERSION=3.0.1
        - BUNDLER_TEST_VERSION=1.17.3
    - rvm: 2.5.3
      env:
        - RUBYGEMS_VERSION=3.0.1
        - BUNDLER_TEST_VERSION=2.0.1
    - rvm: 2.6.0
      env:
        - RUBYGEMS_VERSION=latest
        - BUNDLER_TEST_VERSION=latest