Trying to fix .travis.yml for DokuWiki plugins

(current).travis.yml

language: php
php:
  - "7.2"
  - "7.1"
  - "7.0"
  - "5.6"
env:
  - DOKUWIKI=master
  - DOKUWIKI=stable
  - DOKUWIKI=old-stable
before_install: wget https://raw.github.com/splitbrain/dokuwiki-travis/master/travis.sh
install: sh travis.sh
script: cd _test && phpunit --stderr --group plugin_wrap

(dokuwiki-env-in-script).travis.yml

language: php
php:
  - "7.2"
  - "7.1"
  - "7.0"
  - "5.6"
env:
  - DOKUWIKI=master
  - DOKUWIKI=stable
  - DOKUWIKI=old-stable
before_install: wget https://raw.github.com/splitbrain/dokuwiki-travis/master/travis.sh
install: sh travis.sh
before_script:
  - wget https://phar.phpunit.de/phpunit-5.7.phar
  - cd _test
script:
  - if [ "$DOKUWIKI" = "master" ]; then phpunit --stderr --group plugin_wrap; fi
  - if [ "$DOKUWIKI" != "master" ]; then php ../phpunit-5.7.phar --stderr --group plugin_wrap; fi

(phpunit-env-in-script).travis.yml

language: php
php:
  - "7.2"
  - "7.1"
  - "7.0"
  - "5.6"
env:
  - DOKUWIKI=master PHPUNIT_VERSION=phpunit
  - DOKUWIKI=stable PHPUNIT_VERSION="php ../phpunit-5.7.phar"
  - DOKUWIKI=old-stable PHPUNIT_VERSION="php ../phpunit-5.7.phar"
before_install: wget https://raw.github.com/splitbrain/dokuwiki-travis/master/travis.sh
install: sh travis.sh
before_script:
  - wget https://phar.phpunit.de/phpunit-5.7.phar
  - cd _test
script: $PHPUNIT_VERSION --stderr --group plugin_wrap

Both new travis files currently fail all non-master DokuWiki branches with

Could not open input file: ../phpunit-5.7.phar

I tried to also change permissions in before_install but that didn't work either:

   - chmod 755 phpunit-5.7.phar
(or)
   - chmod +x phpunit-5.7.phar

It's fixed now. The wget of PHPUnit needed to be in before_script and not before_install.