fix: restore error handler in Foundry's traits (#577)

phpstan.neon

@@ -33,6 +33,7 @@ parameters:
                     - var_dump
     excludePaths:
         - ./src/Bundle/Resources
+        - ./src/Test/KernelHelper.php
 
         # phpstan runs with orm 3 - there are too many failures in these files which are compatible with orm 2
         - ./src/Bundle/Maker/Factory/LegacyORMDefaultPropertiesGuesser.php

src/Test/Factories.php

@@ -56,7 +56,7 @@ public static function _setUpFactories(): void
             ),
         );
 
-        $kernel->shutdown();
+        KernelHelper::shutdownKernel($kernel);
     }
 
     /**

src/Test/KernelHelper.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Zenstruck\Foundry\Test;
+
+use Symfony\Component\HttpKernel\KernelInterface;
+
+/**
+ * @internal
+ */
+final class KernelHelper
+{
+    /**
+     * When using ResetDatabase or Factories traits, we're booting the kernel,
+     * which registers the Symfony's error handler too soon.
+     * It is then impossible for PHPUnit to handle deprecations.
+     *
+     * This method tries to mitigate this problem by restoring the error handler.
+     *
+     * @see https://github.com/symfony/symfony/issues/53812
+     */
+    public static function shutdownKernel(KernelInterface $kernel): void
+    {
+        $kernel->shutdown();
+
+        while (true) {
+            $previousHandler = set_error_handler(static fn() => null);
+            restore_error_handler();
+            $isPhpUnitErrorHandler = ($previousHandler instanceof \PHPUnit\Runner\ErrorHandler);
+            if ($previousHandler === null || $isPhpUnitErrorHandler) {
+                break;
+            }
+            restore_error_handler();
+        }
+    }
+}

src/Test/ResetDatabase.php

@@ -61,7 +61,7 @@ public static function _resetDatabase(): void
             StaticDriver::setKeepStaticConnections(true);
         }
 
-        $kernel->shutdown();
+        KernelHelper::shutdownKernel($kernel);
     }
 
     /**
@@ -80,7 +80,7 @@ public static function _resetSchema(): void
 
         DatabaseResetter::resetSchema($kernel);
 
-        $kernel->shutdown();
+        KernelHelper::shutdownKernel($kernel);
     }
 
     private static function shouldReset(KernelInterface $kernel): bool