.travis.yml

language: php

sudo: false

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

matrix:
  include:
    - php: 5.6
      env: PHPUNIT='5.7.*'
    - php: 7.0
      env: PHPUNIT='5.7.*'
    - php: 7.1
      env: PHPUNIT='5.7.*'
  fast_finish: true

before_script:
  - composer config discard-changes true

before_install:
  - travis_retry composer self-update
  - travis_retry composer require "phpunit/phpunit:${PHPUNIT}" --no-interaction --no-update

install:
  - travis_retry composer install --prefer-dist --no-interaction --no-suggest

script:
  - vendor/bin/phpunit