Make sure CallbackDependency can be serialized

Author: riasvdv

src/Dependency/CallbackDependency.php

@@ -3,6 +3,7 @@
 namespace CraftCms\DependencyAwareCache\Dependency;
 
 use Illuminate\Cache\Repository;
+use Laravel\SerializableClosure\SerializableClosure;
 
 /**
  * CallbackDependency represents a dependency based on the result of a callback.
@@ -12,15 +13,15 @@
  */
 class CallbackDependency extends Dependency
 {
-    private $callback;
+    private SerializableClosure $callback;
 
     public function __construct(callable $callback)
     {
-        $this->callback = $callback;
+        $this->callback = new SerializableClosure($callback);
     }
 
     protected function generateData(Repository $cache): mixed
     {
-        return ($this->callback)($cache);
+        return $this->callback->getClosure()($cache);
     }
 }

tests/Dependency/CallbackDependencyTest.php

@@ -35,3 +35,9 @@
 
     expect($dependency->isChanged(DependencyCache::store()))->toBeTrue();
 });
+
+it('can be serialized', function () {
+    $dependency = new CallbackDependency(static fn () => '');
+
+    expect(serialize($dependency))->toBeString();
+});