stick with phpunit in require-dev, for IDE use and to lessen complications with reflection-* deps

Author: ashnazg

.travis.yml

@@ -12,17 +12,16 @@ matrix:
 install:
   - travis_retry composer install --no-interaction --prefer-dist --optimize-autoloader
   - travis_retry wget https://phar.io/releases/phive.phar
-  - travis_retry php phive.phar --no-progress install --trust-gpg-keys 4AA394086372C20A phpunit
 
 script:
-  - ./tools/phpunit --no-coverage
+  - ./vendor/bin/phpunit --no-coverage
 
 jobs:
   include:
     - stage: coverage
       php: 7.1
       script:
-        - ./tools/phpunit
+        - ./vendor/bin/phpunit
       after_script:
         - travis_retry php phive.phar --no-progress install --trust-gpg-keys E82B2FB314E9906E php-coveralls/php-coveralls && ./tools/php-coveralls --verbose
         - travis_retry wget https://scrutinizer-ci.com/ocular.phar && php ocular.phar code-coverage:upload --format=php-clover build/logs/clover.xml

composer.json

@@ -21,6 +21,7 @@
   "minimum-stability":  "stable",
   "require-dev": {
     "mockery/mockery":  "~1.0",
-    "league/flysystem-memory": "~1.0"
+    "league/flysystem-memory": "~1.0",
+    "phpunit/phpunit": "^6.5"
   }
 }