diff --git a/packages/seal/src/Adapter/AdapterFactory.php b/packages/seal/src/Adapter/AdapterFactory.php
index 51e1ff5a..4e050584 100644
--- a/packages/seal/src/Adapter/AdapterFactory.php
+++ b/packages/seal/src/Adapter/AdapterFactory.php
@@ -87,7 +87,7 @@ public function parseDsn(string $dsn): array
 
             if (\str_contains($dsn, ':///')) {
                 // make DSN like loupe:///full/path/project/var/indexes parseable
-                $dsn = \str_replace(':///', '://' . $adapterName . '/', $dsn);
+                $dsn = \str_replace(':///', '://' . $adapterName . '/', $dsn . $query);
             } else {
                 $dsn = $dsn . '@' . $adapterName . $query;
             }
diff --git a/packages/seal/tests/Adapter/AdapterFactoryTest.php b/packages/seal/tests/Adapter/AdapterFactoryTest.php
new file mode 100644
index 00000000..d4a5120b
--- /dev/null
+++ b/packages/seal/tests/Adapter/AdapterFactoryTest.php
@@ -0,0 +1,180 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the Schranz Search package.
+ *
+ * (c) Alexander Schranz <alexander@sulu.io>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Adapter;
+
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\TestCase;
+use Schranz\Search\SEAL\Adapter\AdapterFactory;
+use Schranz\Search\SEAL\Adapter\AdapterFactoryInterface;
+use Schranz\Search\SEAL\Adapter\AdapterInterface;
+
+#[CoversClass(AdapterFactory::class)]
+class AdapterFactoryTest extends TestCase
+{
+    private AdapterFactory $adapterFactory;
+
+    protected function setUp(): void
+    {
+        $this->adapterFactory = new AdapterFactory([
+            'scheme' => $this->createAdapterFactory('scheme'),
+        ]);
+    }
+
+    /**
+     * @param array{
+     *     scheme: string,
+     *     host: string,
+     *     port?: int,
+     *     user?: string,
+     *     pass?: string,
+     *     path?: string,
+     *     query: array<string, string>,
+     *     fragment?: string,
+     * } $expectedResult
+     */
+    #[DataProvider('provideDsn')]
+    public function testParseDsn(string $dsn, array $expectedResult): void
+    {
+        $parsedDsn = $this->adapterFactory->parseDsn($dsn);
+
+        $this->assertSame($expectedResult, $parsedDsn);
+    }
+
+    public function testAdapterNotFound(): void
+    {
+        $this->expectException(\InvalidArgumentException::class);
+        $this->expectExceptionMessage('Unknown Search adapter: "not-found" available adapters are "scheme".');
+
+        $this->adapterFactory->parseDsn('not-found://host:1234');
+    }
+
+    public function testInvalidDsn(): void
+    {
+        $this->expectException(\InvalidArgumentException::class);
+        $this->expectExceptionMessage('Invalid DSN: "".');
+
+        $this->adapterFactory->parseDsn('');
+    }
+
+    /**
+     * @return \Generator<array{0: string, 1: array{
+     *      scheme: string,
+     *      host: string,
+     *      port?: int,
+     *      user?: string,
+     *      pass?: string,
+     *      path?: string,
+     *      query: array<string, string>,
+     *      fragment?: string,
+     *  }}>
+     */
+    public static function provideDsn(): \Generator
+    {
+        yield 'standard' => [
+            'scheme://host:1234',
+            [
+                'scheme' => 'scheme',
+                'host' => 'host',
+                'port' => 1234,
+                'query' => [],
+            ],
+        ];
+
+        yield 'standard_full' => [
+            'scheme://user:pass@host:1234/path?queryKey=queryValue#fragment',
+            [
+                'scheme' => 'scheme',
+                'host' => 'host',
+                'port' => 1234,
+                'user' => 'user',
+                'pass' => 'pass',
+                'path' => '/path',
+                'query' => [
+                    'queryKey' => 'queryValue',
+                ],
+                'fragment' => 'fragment',
+            ],
+        ];
+
+        yield 'only_username_password' => [
+            'scheme://user:pass',
+            [
+                'scheme' => 'scheme',
+                'host' => '',
+                'user' => 'user',
+                'pass' => 'pass',
+                'query' => [],
+            ],
+        ];
+
+        yield 'only_username_password_with_query' => [
+            'scheme://user:pass?queryKey=queryValue#fragment',
+            [
+                'scheme' => 'scheme',
+                'host' => '',
+                'user' => 'user',
+                'pass' => 'pass',
+                'query' => [
+                    'queryKey' => 'queryValue',
+                ],
+                'fragment' => 'fragment',
+            ],
+        ];
+
+        yield 'path' => [
+            'scheme:///var/data/directory',
+            [
+                'scheme' => 'scheme',
+                'host' => '',
+                'path' => '/var/data/directory',
+                'query' => [],
+            ],
+        ];
+
+        yield 'path_with_query' => [
+            'scheme:///var/data/directory?queryKey=queryValue#fragment',
+            [
+                'scheme' => 'scheme',
+                'host' => '',
+                'path' => '/var/data/directory',
+                'query' => [
+                    'queryKey' => 'queryValue',
+                ],
+                'fragment' => 'fragment',
+            ],
+        ];
+    }
+
+    private function createAdapterFactory(string $name): AdapterFactoryInterface
+    {
+        $adapterFactory = new class() implements AdapterFactoryInterface {
+            public static string $name;
+
+            public function createAdapter(array $dsn): AdapterInterface
+            {
+                throw new \Exception('Not implemented');
+            }
+
+            public static function getName(): string
+            {
+                return static::$name;
+            }
+        };
+
+        $adapterFactory::$name = $name;
+
+        return $adapterFactory;
+    }
+}
diff --git a/packages/seal/tests/Marshaller/FlattenMarshallerTest.php b/packages/seal/tests/Marshaller/FlattenMarshallerTest.php
index 5388b782..5b630539 100644
--- a/packages/seal/tests/Marshaller/FlattenMarshallerTest.php
+++ b/packages/seal/tests/Marshaller/FlattenMarshallerTest.php
@@ -13,11 +13,13 @@
 
 namespace Schranz\Search\SEAL\Tests\Marshaller;
 
+use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 use Schranz\Search\SEAL\Marshaller\FlattenMarshaller;
 use Schranz\Search\SEAL\Schema\Field;
 
+#[CoversClass(FlattenMarshaller::class)]
 class FlattenMarshallerTest extends TestCase
 {
     /**
diff --git a/packages/seal/tests/Marshaller/MarshallerTest.php b/packages/seal/tests/Marshaller/MarshallerTest.php
index a7671fca..8366498d 100644
--- a/packages/seal/tests/Marshaller/MarshallerTest.php
+++ b/packages/seal/tests/Marshaller/MarshallerTest.php
@@ -13,10 +13,12 @@
 
 namespace Schranz\Search\SEAL\Tests\Marshaller;
 
+use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\TestCase;
 use Schranz\Search\SEAL\Marshaller\Marshaller;
 use Schranz\Search\SEAL\Testing\TestingHelper;
 
+#[CoversClass(Marshaller::class)]
 class MarshallerTest extends TestCase
 {
     public function testMarshall(): void
diff --git a/packages/seal/tests/Schema/IndexTest.php b/packages/seal/tests/Schema/IndexTest.php
index ced0483f..014a0dc8 100644
--- a/packages/seal/tests/Schema/IndexTest.php
+++ b/packages/seal/tests/Schema/IndexTest.php
@@ -13,11 +13,13 @@
 
 namespace Schranz\Search\SEAL\Tests\Schema;
 
+use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 use Schranz\Search\SEAL\Schema\Field;
 use Schranz\Search\SEAL\Schema\Index;
 
+#[CoversClass(Index::class)]
 class IndexTest extends TestCase
 {
     public function testIndex(): void
diff --git a/packages/seal/tests/Schema/Loader/PhpFileLoaderTest.php b/packages/seal/tests/Schema/Loader/PhpFileLoaderTest.php
index 8668325c..1b585473 100644
--- a/packages/seal/tests/Schema/Loader/PhpFileLoaderTest.php
+++ b/packages/seal/tests/Schema/Loader/PhpFileLoaderTest.php
@@ -13,10 +13,12 @@
 
 namespace Schranz\Search\SEAL\Tests\Schema\Loader;
 
+use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\TestCase;
 use Schranz\Search\SEAL\Schema\Field;
 use Schranz\Search\SEAL\Schema\Loader\PhpFileLoader;
 
+#[CoversClass(PhpFileLoader::class)]
 class PhpFileLoaderTest extends TestCase
 {
     public function testLoadBasic(): void