Refactor test case

Author: roxblnfk

tests/Unit/PSR7WorkerTest.php

@@ -21,8 +21,17 @@ public function testHttpWorkerIsAvailable(): void
             $psrFactory,
         );
 
-        ob_end_clean();
-
         self::assertInstanceOf(HttpWorker::class, $psrWorker->getHttpWorker());
     }
+
+    protected function tearDown(): void
+    {
+        // Clean all extra output buffers
+        $level = \ob_get_level();
+        while (--$level > 0) {
+            \ob_end_clean();
+        }
+
+        parent::tearDown(); // TODO: Change the autogenerated stub
+    }
 }