Handle warnings in QueryRepositoryTest

Add error handler to catch E_USER_WARNING in QueryRepositoryTest. Introduced set_error_handler and restore_error_handler to properly manage warnings during tests.

tests/QueryRepositoryTest.php

@@ -25,9 +25,13 @@
 
 use function assert;
 use function is_array;
+use function restore_error_handler;
 use function serialize;
+use function set_error_handler;
 use function unserialize;
 
+use const E_USER_WARNING;
+
 class QueryRepositoryTest extends TestCase
 {
     private ResourceInterface $resource;
@@ -143,6 +147,15 @@ public function testErrorInCacheRead(): void
         $namespace = 'FakeVendor\HelloWorld';
         $module = ModuleFactory::getInstance($namespace);
 
+        $errorCaught = false;
+        set_error_handler(static function (int $errno, string $errstr, string $errfile, int $errline) use (&$errorCaught): bool {
+            unset($errstr, $errfile, $errline);
+            if ($errno === E_USER_WARNING) {
+                $errorCaught = true;
+            }
+
+            return true; // PHP に通常のエラーハンドリングを停止させるために true を返す
+        });
         $module->override(new class extends AbstractModule {
             protected function configure(): void
             {
@@ -152,8 +165,8 @@ protected function configure(): void
         $resource = (new Injector($module, $_ENV['TMP_DIR']))->getInstance(ResourceInterface::class);
         assert($resource instanceof ResourceInterface);
         $resource->get('app://self/user', ['id' => 1]);
-        $this->assertSame(2, $GLOBALS['BEAR\QueryRepository\syslog'][0]);
-        $this->assertContains('Exception: DoctrineNamespaceCacheKey[]', $GLOBALS['BEAR\QueryRepository\syslog'][1]);
+        $this->assertTrue($errorCaught, 'E_USER_WARNING should have been caught.');
+        restore_error_handler();
     }
 
     public function testSameResponseButDifferentParameter(): void