Make tests parallel

LKaemmerling · LKaemmerling · commit 9798269c9b26 · 2018-08-14T12:38:12.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -14,4 +14,6 @@ php:
   - nightly
 
 services:
-  - docker
+  - docker
+
+script: vendor/bin/paratest -p8 tests
diff --git a/composer.json b/composer.json
@@ -10,7 +10,8 @@
   },
   "require-dev": {
     "phpunit/phpunit": "6.5",
-    "phpdocumentor/phpdocumentor": "2.*"
+    "phpdocumentor/phpdocumentor": "2.*",
+    "brianium/paratest": "1.*"
   },
   "license": "MIT",
   "authors": [
