fix test

Author: zavitkov

Tests/Unit/DependencyInjection/EnqueueExtensionTest.php

@@ -13,21 +13,21 @@
 use Enqueue\Test\ClassExtensionTrait;
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Extension\Extension;
 use Symfony\Component\DependencyInjection\Reference;
-use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 
 class EnqueueExtensionTest extends TestCase
 {
     use ClassExtensionTrait;
 
     public function testShouldImplementConfigurationInterface()
     {
-        self::assertClassExtends(Extension::class, EnqueueExtension::class);
+        $this->assertClassExtends(Extension::class, EnqueueExtension::class);
     }
 
     public function testShouldBeFinal()
     {
-        self::assertClassFinal(EnqueueExtension::class);
+        $this->assertClassFinal(EnqueueExtension::class);
     }
 
     public function testCouldBeConstructedWithoutAnyArguments()