language: ruby
cache: bundler

rvm:
  - 2.1
  - 2.2
  - 2.3
  - 2.4
  - 2.5
  - ruby-head
  - jruby-head

jdk:
  - oraclejdk8
  - oraclejdk9

matrix:
  exclude:
    - rvm: 2.1
      jdk: oraclejdk8
    - rvm: 2.1
      jdk: oraclejdk9
    - rvm: 2.2
      jdk: oraclejdk8
    - rvm: 2.2
      jdk: oraclejdk9
    - rvm: 2.3
      jdk: oraclejdk8
    - rvm: 2.3
      jdk: oraclejdk9
    - rvm: 2.4
      jdk: oraclejdk8
    - rvm: 2.4
      jdk: oraclejdk9
    - rvm: 2.5
      jdk: oraclejdk8
    - rvm: 2.5
      jdk: oraclejdk9

script: 'bundle exec rake'

notifications:
  email:
    recipients:
      - moorer@udel.edu
    on_failure: always
    on_success: always