Updated codestyle

Author: Anton Shevchuk

tests/unit/Common/HelperTest.php

@@ -21,7 +21,7 @@
  */
 class HelperTest extends FrameworkTestCase
 {
-    const MAGIC_NUMBER = 42;
+    protected const MAGIC_NUMBER = 42;
 
     /**
      * @var ConcreteHelpers

tests/unit/EventManager/EventManagerTest.php

@@ -157,20 +157,16 @@ public function testTriggerWithTarget()
         // first
         $this->eventManager->attach(
             'test',
-            function (
+            function ($event) {
                 /* @var Event */
-                $event
-            ) {
                 return $event->getTarget() + 1;
             }
         );
         // second
         $this->eventManager->attach(
             'test',
-            function (
+            function ($event) {
                 /* @var Event */
-                $event
-            ) {
                 return $event->getTarget() + 1;
             }
         );
@@ -189,10 +185,8 @@ public function testTriggerWithParams()
     {
         $this->eventManager->attach(
             'test',
-            function (
+            function ($event) {
                 /* @var Event */
-                $event
-            ) {
                 return $event->getTarget() + $event->getParam('plus');
             }
         );