language: ruby

before_install:
  - gem update --system $RUBYGEMS_VERSION
  - gem list bundler -d # see where the bundler versions are installed and which are listed as default
  - # Move bundler gemspec from default to reg directory so it can be uninstalled. Is there an API way to do this?
  - mv /home/travis/.rvm/rubies/ruby-$RVM_VER/lib/ruby/gems/$RUBY_MAJ_MIN.0/specifications/default/bundler-*.gemspec /home/travis/.rvm/rubies/ruby-$RVM_VER/lib/ruby/gems/$RUBY_MAJ_MIN.0/specifications/
  - for dir in $(echo $GEM_PATH | tr ':' ' '); do gem uninstall -i $dir bundler -a -x; done
  - gem install bundler -v $BUNDLER_TEST_VERSION
  - bundle --version

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

matrix:
  include:
    - rvm: 2.3.8
      env:
        - RVM_VER=2.3.8
        - RUBY_MAJ_MIN=2.3
        - RUBYGEMS_VERSION=2.5.2
        - BUNDLER_TEST_VERSION=1.11.2
    - rvm: 2.3.8
      env:
        - RVM_VER=2.3.8
        - RUBY_MAJ_MIN=2.3
        - RUBYGEMS_VERSION=2.5.2
        - BUNDLER_TEST_VERSION=1.12.5
    - rvm: 2.4.5
      env:
        - RVM_VER=2.4.5
        - RUBY_MAJ_MIN=2.4
        - RUBYGEMS_VERSION=2.6.14
        - BUNDLER_TEST_VERSION=1.13.6
    - rvm: 2.4.5
      env:
        - RVM_VER=2.4.5
        - RUBY_MAJ_MIN=2.4
        - RUBYGEMS_VERSION=2.6.14
        - BUNDLER_TEST_VERSION=1.14.6
    - rvm: 2.5.3
      env:
        - RVM_VER=2.5.3
        - RUBY_MAJ_MIN=2.5
        - RUBYGEMS_VERSION=2.7.6
        - BUNDLER_TEST_VERSION=1.15.4
    - rvm: 2.5.3
      env:
        - RVM_VER=2.5.3
        - RUBY_MAJ_MIN=2.5
        - RUBYGEMS_VERSION=2.7.6
        - BUNDLER_TEST_VERSION=1.16.6
    - rvm: 2.5.3
      env:
        - RVM_VER=2.5.3
        - RUBY_MAJ_MIN=2.5
        - RUBYGEMS_VERSION=2.7.6
        - BUNDLER_TEST_VERSION=1.17.3
    - rvm: 2.4.5
      env:
        - RVM_VER=2.4.5
        - RUBY_MAJ_MIN=2.4
        - RUBYGEMS_VERSION=2.6.14
        - BUNDLER_TEST_VERSION=1.17.3
    - rvm: 2.3.8
      env:
        - RVM_VER=2.3.8
        - RUBY_MAJ_MIN=2.3
        - RUBYGEMS_VERSION=2.5.2
        - BUNDLER_TEST_VERSION=1.17.3
    - rvm: 2.6.0
      env:
        - RVM_VER=2.6.0
        - RUBY_MAJ_MIN=2.6
        - RUBYGEMS_VERSION=3.0.1
        - BUNDLER_TEST_VERSION=1.17.3
    - rvm: 2.5.3
      env:
        - RVM_VER=2.5.3
        - RUBY_MAJ_MIN=2.5
        - RUBYGEMS_VERSION=3.0.1
        - BUNDLER_TEST_VERSION=2.0.1
    - rvm: 2.6.0
      env:
        - RVM_VER=2.6.0
        - RUBY_MAJ_MIN=2.6
        - RUBYGEMS_VERSION=3.0.1
        - BUNDLER_TEST_VERSION=2.0.1