.travis.yml

matrix:
  include:
    # Linux
    - os: linux
      language: php
      php: '5.6'

    - os: linux
      language: php
      php: '7.0'

    - os: linux
      language: php
      php: '7.1'

    - os: linux
      language: php
      php: 'nightly'

before_script:
  - if [[ $TRAVIS_OS_NAME == 'osx' ]] ; then brew update ; fi; # travis image is quite old, update to have latest dependecies available
  - if [[ $TRAVIS_OS_NAME == 'osx' ]] ; then brew tap homebrew/dupes ; fi;
  - if [[ $TRAVIS_OS_NAME == 'osx' ]] ; then brew tap homebrew/versions ; fi;
  - if [[ $TRAVIS_OS_NAME == 'osx' ]] ; then brew tap homebrew/homebrew-php ; fi;
  - if [[ $TRAVIS_OS_NAME == 'osx' ]] ; then brew install ${OSX_PHP_VERSION} ; fi; # install PHP
  - if [[ $TRAVIS_OS_NAME == 'osx' ]] ; then curl -sS https://getcomposer.org/installer | php ; fi; # install composer
  - if [[ $TRAVIS_OS_NAME == 'osx' ]] ; then mv composer.phar /usr/local/bin/composer | php ; fi; # install composer globally
  - if [[ $TRAVIS_OS_NAME == 'osx' ]] ; then export PATH="$(brew --prefix homebrew/php/${OSX_PHP_VERSION})/bin:$PATH" ; fi; # app php to path
  - if [[ $TRAVIS_OS_NAME == 'osx' ]] ; then brew install coreutils ; fi; # truncate command:
  - composer self-update
  - composer require phpunit/phpunit:4.8.35 --prefer-dist --no-interaction --dev
  - composer update

script:
  - vendor/bin/phpunit -c testing/phpunit.xml