Adjust for test API changes in blob

Check things using FileApi instead of using the test API since
that is now gone (or at least there are no longer any static methods
and no global state)

composer.json

@@ -7,7 +7,7 @@
         "php": ">=8.1",
         "ext-json": "*",
         "api-platform/core": "^3.2",
-        "dbp/relay-blob-bundle": "^0.1.66",
+        "dbp/relay-blob-bundle": "^0.1.68",
         "dbp/relay-core-bundle": "^0.1.194",
         "doctrine/doctrine-bundle": "^2.13",
         "doctrine/doctrine-migrations-bundle": "^3.3",

tests/DocumentServiceTest.php

@@ -5,8 +5,8 @@
 namespace Dbp\Relay\BlobConnectorCampusonlineDmsBundle\Tests;
 
 use ApiPlatform\Symfony\Bundle\Test\ApiTestCase;
+use Dbp\Relay\BlobBundle\Api\FileApi;
 use Dbp\Relay\BlobBundle\TestUtils\BlobTestUtils;
-use Dbp\Relay\BlobBundle\TestUtils\TestDatasystemProviderService;
 use Dbp\Relay\BlobBundle\TestUtils\TestEntityManager;
 use Dbp\Relay\BlobConnectorCampusonlineDmsBundle\Entity\Document;
 use Dbp\Relay\BlobConnectorCampusonlineDmsBundle\Service\DocumentService;
@@ -18,6 +18,7 @@ class DocumentServiceTest extends ApiTestCase
     private const TEST_FILE_2_NAME = 'test_patch.txt';
     protected ?DocumentService $documentService = null;
     protected ?TestEntityManager $blobTestEntityManager = null;
+    private FileApi $fileApi;
 
     protected function setUp(): void
     {
@@ -33,10 +34,11 @@ protected function setUpFileApi(): void
         ];
 
         $this->blobTestEntityManager = new TestEntityManager(self::bootKernel()->getContainer());
-        $this->documentService = new DocumentService(BlobTestUtils::createTestFileApi(
+        $this->fileApi = BlobTestUtils::createTestFileApi(
             $this->blobTestEntityManager->getEntityManager(),
             $testConfig
-        ));
+        );
+        $this->documentService = new DocumentService($this->fileApi);
     }
 
     /**
@@ -66,10 +68,9 @@ public function testCreateDocument(): void
         $this->assertEquals($file->getSize(), $document->getLatestVersion()->getSize());
         $this->assertEquals($file->getMimeType(), $document->getLatestVersion()->getMediaType());
 
-        $this->assertTrue(TestDatasystemProviderService::hasFile(
-            self::getInternalBucketId(), $document->getLatestVersion()->getUid()));
-        $this->assertTrue(TestDatasystemProviderService::isContentEqual(
-            self::getInternalBucketId(), $document->getLatestVersion()->getUid(), $file));
+        $res = $this->fileApi->getFile($document->getLatestVersion()->getUid());
+        $this->assertNotNull($res->getFile());
+        $this->assertSame($file->getContent(), $res->getFile()->getContent());
     }
 
     protected static function getInternalBucketId(): ?string