strengthen the test that listeners can be set before and after pushed event

Author: imanghafoori1

tests/Events/EventsDispatcherTest.php

@@ -132,14 +132,17 @@ public function testQueuedEventsAreFired()
     {
         unset($_SERVER['__event.test']);
         $d = new Dispatcher;
-        $d->push('update', ['name' => 'taylor']);
         $d->listen('update', function ($name) {
             $_SERVER['__event.test'] = $name;
         });
+        $d->push('update', ['name' => 'taylor']);
+        $d->listen('update', function ($name) {
+            $_SERVER['__event.test'] .= $name;
+        });
 
         $this->assertFalse(isset($_SERVER['__event.test']));
         $d->flush('update');
-        $this->assertSame('taylor', $_SERVER['__event.test']);
+        $this->assertSame('taylortaylor', $_SERVER['__event.test']);
     }
 
     public function testQueuedEventsCanBeForgotten()