fix(FileAccess#getByAncestorInStorage): Use a subquery to fix tests

Signed-off-by: Marcel Klehr <mklehr@gmx.net>

lib/private/Files/Cache/FileAccess.php

@@ -135,8 +135,16 @@ class FileAccess implements IFileAccess {
 
 		if (!$endToEndEncrypted) {
 			// End to end encrypted files are descendants of a folder with encrypted=1
-			$qb->leftJoin('f', 'filecache', 'p', $qb->expr()->eq('f.parent', 'p.fileid'));
-			$qb->andWhere($qb->expr()->eq('p.encrypted', $qb->createNamedParameter(0, IQueryBuilder::PARAM_INT)));
+			// Use a subquery to check the `encrypted` status of the parent folder
+			$subQuery = $this->getQuery()->select('p.encrypted')
+				->from('filecache', 'p')
+				->andWhere($qb->expr()->eq('p.fileid', 'f.parent'))
+				->setMaxResults(1)
+				->getSQL();
+
+			$qb->andWhere(
+				$qb->expr()->eq($qb->createFunction(sprintf('(%s)', $subQuery)), $qb->createNamedParameter(0, IQueryBuilder::PARAM_INT))
+			);
 		}
 
 		if (!$serverSideEncrypted) {
@@ -151,8 +159,8 @@ class FileAccess implements IFileAccess {
 		if ($maxResults !== 0) {
 			$qb->setMaxResults($maxResults);
 		}
-		$files = $qb->orderBy('f.fileid', 'ASC')
-			->executeQuery();
+		$qb->orderBy('f.fileid', 'ASC');
+		$files = $qb->executeQuery();
 
 		while (
 			/** @var array */

tests/lib/Files/Cache/FileAccessTest.php

@@ -250,7 +250,7 @@ class FileAccessTest extends TestCase {
 		$queryBuilder->insert('filecache')
 			->values([
 				'fileid' => 5,
-				'parent' => 0,
+				'parent' => 1,
 				'path' => $queryBuilder->createNamedParameter('files/serversideencrypted'),
 				'path_hash' => $queryBuilder->createNamedParameter(md5('files/serversideencrypted')),
 				'storage' => $queryBuilder->createNamedParameter(1),
@@ -350,10 +350,9 @@ class FileAccessTest extends TestCase {
 
 		$result = iterator_to_array($generator);
 
-		var_dump($result);
-
-		$this->assertCount(1, $result);
-		$this->assertEquals('files/serversideencrypted', $result[0]->getPath());
+		$this->assertCount(3, $result);
+		$paths = array_map(fn(CacheEntry $entry) => $entry->getPath(), $result);
+		$this->assertEquals(['files/documents', 'files/photos', 'files/serversideencrypted'], $paths);
 	}
 
 	/**