Fix styling

Author: freekmurze

tests/Integration/AssertionTest.php

@@ -11,7 +11,7 @@ class AssertionTest extends TestCase
     use ComparesSnapshotFiles;
     use MatchesSnapshots;
 
-    public function setUp(): void
+    protected function setUp(): void
     {
         parent::setUp();
 

tests/Integration/MatchesSnapshotTest.php

@@ -13,7 +13,7 @@ class MatchesSnapshotTest extends TestCase
 {
     use ComparesSnapshotFiles;
 
-    public function setUp(): void
+    protected function setUp(): void
     {
         parent::setUp();
 

tests/Unit/Drivers/ImageDriverTest.php

@@ -9,7 +9,7 @@
 
 class ImageDriverTest extends TestCase
 {
-    public function setUp(): void
+    protected function setUp(): void
     {
         parent::setUp();
 

tests/Unit/SnapshotTest.php

@@ -16,7 +16,7 @@ class SnapshotTest extends TestCase
     /** @var \PHPUnit_Framework_MockObject_MockObject */
     private $driver;
 
-    public function setUp(): void
+    protected function setUp(): void
     {
         parent::setUp();