[FrameworkBundle] ensure TestBrowserToken::$firewallName is serialized

Author: kbond

Test/TestBrowserToken.php

@@ -43,4 +43,16 @@ public function getCredentials()
     {
         return null;
     }
+
+    public function __serialize(): array
+    {
+        return [$this->firewallName, parent::__serialize()];
+    }
+
+    public function __unserialize(array $data): void
+    {
+        [$this->firewallName, $parentData] = $data;
+
+        parent::__unserialize($parentData);
+    }
 }

Tests/Test/TestBrowserTokenTest.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Symfony\Bundle\FrameworkBundle\Tests\Test;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Bundle\FrameworkBundle\Test\TestBrowserToken;
+
+final class TestBrowserTokenTest extends TestCase
+{
+    public function testCanBeSerializedAndUnserialized()
+    {
+        $token = unserialize(serialize(new TestBrowserToken()));
+
+        $this->assertSame('main', $token->getFirewallName());
+    }
+}