Applied fixes from StyleCI

Author: cretueusebiu

tests/ChannelTest.php

@@ -63,7 +63,7 @@ public function it_will_delete_invalid_subscriptions()
             ->once()
             ->andReturn([
                 ['success' => true],
-                ['success' => false]
+                ['success' => false],
             ]);
 
         $this->testUser->updatePushSubscription('valid_endpoint');

tests/MessageTest.php

@@ -19,9 +19,9 @@ public function setUp()
     /** @test */
     public function it_can_accept_a_body_when_constructing_a_message()
     {
-       $message = new WebPushMessage('Message body');
+        $message = new WebPushMessage('Message body');
 
-       $this->assertEquals('Message body', $message->toArray()['body']);
+        $this->assertEquals('Message body', $message->toArray()['body']);
     }
 
     /** @test */

tests/TestCase.php

@@ -69,7 +69,7 @@ protected function initializeDirectory($directory)
         if (File::isDirectory($directory)) {
             File::deleteDirectory($directory);
         }
-        if (!File::exists($directory)) {
+        if (! File::exists($directory)) {
             File::makeDirectory($directory);
         }
     }

tests/TestNotification.php

@@ -4,7 +4,6 @@
 
 use Illuminate\Notifications\Notification;
 use NotificationChannels\WebPush\WebPushMessage;
-use NotificationChannels\WebPush\WebPushChannel;
 
 class TestNotification extends Notification
 {