language: php

php: 
  - 5.5
  - 5.6
  - 7.1
  - 7.2
  - 7.3

sudo: false

before_install:
  # turn off XDebug
  - phpenv config-rm xdebug.ini || return

before_script:
  - composer install --no-interaction --prefer-source

script:
  - vendor/bin/phpunit --verbose