File: .travis.yml

dist: trusty

language: php
php:
  - '5.6'
  - '7.0'
  - hhvm

branches:
    only: master

before_script:
    - composer self-update
    - composer update --prefer-source `if [[ $COMPOSER_PREFER_LOWEST = true ]]; then echo "--prefer-lowest --prefer-stable"; fi`

script: vendor/bin/phpunit --configuration phpunit.travis.xml