Add php-cs-fixer to CI (#217)

Author: Minishlink

.travis.yml

@@ -37,8 +37,7 @@ before_script:
 
 script:
   - web-push-testing-service start example -p 9012
-  - ./vendor/bin/phpunit
+  - composer test:unit
   - web-push-testing-service stop example
-
-after_script:
-  - ./vendor/bin/phpstan analyse --level max src
+  - composer test:typing
+  - composer test:syntax

composer.json

@@ -13,7 +13,9 @@
     }
   ],
   "scripts": {
-    "test": "./vendor/bin/phpunit --color"
+    "test:unit": "./vendor/bin/phpunit --color",
+    "test:typing": "./vendor/bin/phpstan analyse --level max src",
+    "test:syntax": "./vendor/bin/php-cs-fixer fix ./src --dry-run --stop-on-violation --using-cache=no"
   },
   "require": {
     "php": "^7.1",
@@ -26,7 +28,8 @@
   },
   "require-dev": {
     "phpunit/phpunit": "^7.0",
-    "phpstan/phpstan": "^0.11"
+    "phpstan/phpstan": "^0.11",
+    "friendsofphp/php-cs-fixer": "^2.14"
   },
   "autoload": {
     "psr-4" : {