language: ruby

branches:
  only:
    - master

rvm:
  # MRI
  - ruby-head
  - 2.7
  - 2.6
  - 2.5
  - 2.4
  - 2.3
  - 2.2
  - 2.1
  - 1.9.3
  - 1.8.7	
  - ree
  # JRuby
  - jruby-head
  - jruby-9.2
  # Truffleruby
  - truffleruby-head
  - truffleruby-20.3.0

jobs:
  allow_failures:
    - rvm: ruby-head
    - rvm: jruby-head
    - rvm: truffleruby-head
    # NOTE (2020-12-18): Failing access to Rubygems with following error:
    #   Unable to download data from https://rubygems.org/ - hostname was not
    #   match with the server certificate (https://rubygems.org/specs.4.8.gz)
    #
    #   See Travis CI topic here:
    #   https://travis-ci.community/t/ruby-1-8-7-and-ree-builds-broken-by-ssl-certificate-failure/10866
    #
    # TODO (2020-12-18): Either find a fix or remove testing of 1.8 versions
    - rvm: 1.8.7
    - rvm: ree

  fast_finish: true