language: php

cache:
  directories:
    - $HOME/.composer/cache

php:
  - 5.5
  - 5.6
  - 7.0
  - 7.1
  - 7.2
  - hhvm

matrix:
  fast_finish: true
  include:
    - php: 5.5
      env: COMPOSER_FLAGS="--prefer-lowest"

install: composer update $COMPOSER_FLAGS --prefer-dist --no-interaction

script:
  - vendor/bin/phpunit