test: created own test for property hooks with default values

Author: denjas

src/Symfony/Component/VarExporter/Tests/Fixtures/LazyProxy/Hooked.php

@@ -22,9 +22,4 @@ class Hooked
         get { return $this->backed ??= 234; }
         set { $this->backed = $value; }
     }
-
-    public int $backedWithDefault = 321 {
-        get => $this->backedWithDefault;
-        set => $this->backedWithDefault = $value;
-    }
 }

src/Symfony/Component/VarExporter/Tests/LazyGhostTraitTest.php

@@ -27,6 +27,7 @@
 use Symfony\Component\VarExporter\Tests\Fixtures\LazyGhost\TestClass;
 use Symfony\Component\VarExporter\Tests\Fixtures\LazyProxy\AsymmetricVisibility;
 use Symfony\Component\VarExporter\Tests\Fixtures\LazyProxy\Hooked;
+use Symfony\Component\VarExporter\Tests\Fixtures\LazyProxy\HookedWithDefaultValue;
 use Symfony\Component\VarExporter\Tests\Fixtures\SimpleObject;
 
 class LazyGhostTraitTest extends TestCase
@@ -503,9 +504,20 @@ public function testPropertyHooks()
         $object->backed = 345;
         $this->assertTrue($initialized);
         $this->assertSame(345, $object->backed);
+    }
 
+    public function testPropertyHooksWithDefaultValue()
+    {
         $initialized = false;
-        $object = $this->createLazyGhost(Hooked::class, function ($instance) use (&$initialized) {
+        $object = $this->createLazyGhost(HookedWithDefaultValue::class, function ($instance) use (&$initialized) {
+            $initialized = true;
+        });
+
+        $this->assertSame(321, $object->backedWithDefault);
+        $this->assertTrue($initialized);
+
+        $initialized = false;
+        $object = $this->createLazyGhost(HookedWithDefaultValue::class, function ($instance) use (&$initialized) {
             $initialized = true;
         });
         $object->backedWithDefault = 654;