diff --git a/tests/Cases/DI/DbalExtension.phpt b/tests/Cases/DI/DbalExtension.phpt
new file mode 100644
index 0000000..0e06780
--- /dev/null
+++ b/tests/Cases/DI/DbalExtension.phpt
@@ -0,0 +1,34 @@
+<?php declare(strict_types = 1);
+
+namespace Tests\Cases\DI;
+
+use Contributte\Tester\Toolkit;
+use Contributte\Tester\Utils\ContainerBuilder;
+use Contributte\Tester\Utils\Neonkit;
+use Doctrine\DBAL\Connection;
+use Nette\DI\Compiler;
+use Nettrine\DBAL\DI\DbalExtension;
+use Tester\Assert;
+
+require_once __DIR__ . '/../../bootstrap.php';
+
+// Minimal config
+Toolkit::test(function (): void {
+	$container = ContainerBuilder::of()
+		->withCompiler(static function (Compiler $compiler): void {
+			$compiler->addExtension('nettrine.dbal', new DbalExtension());
+			$compiler->addConfig(Neonkit::load(
+				<<<'NEON'
+				nettrine.dbal:
+					connections:
+						default:
+							driver: pdo_sqlite
+							password: test
+							user: test
+							path: ":memory:"
+				NEON
+			));
+		})->build();
+
+	Assert::type(Connection::class, $container->getByName('nettrine.dbal.connections.default.connection'));
+});