refactor: Remove deprecated call to OC_User::useBackend

Signed-off-by: Carl Schwan <carlschwan@kde.org>

Author: CarlSchwan

tests/integration/database/AssignmentMapperTest.php

@@ -67,7 +67,6 @@ public static function setUpBeforeClass(): void {
 		parent::setUpBeforeClass();
 
 		$backend = new \Test\Util\User\Dummy();
-		\OC_User::useBackend($backend);
 		Server::get(IUserManager::class)->registerBackend($backend);
 		$backend->createUser(self::TEST_USER1, self::TEST_USER1);
 		$backend->createUser(self::TEST_USER2, self::TEST_USER2);

tests/integration/database/BoardDatabaseTest.php

@@ -25,6 +25,7 @@
 use OCA\Deck\Db\Board;
 use OCA\Deck\Service\BoardService;
 use OCP\IGroupManager;
+use OCP\IUserManager;
 use OCP\IUserSession;
 use OCP\Server;
 
@@ -45,7 +46,7 @@ public static function setUpBeforeClass(): void {
 		parent::setUpBeforeClass();
 
 		$backend = new \Test\Util\User\Dummy();
-		\OC_User::useBackend($backend);
+		Server::get(IUserManager::class)->registerBackend($backend);
 		$backend->createUser(self::TEST_USER1, self::TEST_USER1);
 		$backend->createUser(self::TEST_USER2, self::TEST_USER2);
 		$backend->createUser(self::TEST_USER3, self::TEST_USER3);

tests/integration/database/TransferOwnershipTest.php

@@ -41,7 +41,6 @@ public static function setUpBeforeClass(): void {
 		parent::setUpBeforeClass();
 
 		$backend = new \Test\Util\User\Dummy();
-		\OC_User::useBackend($backend);
 		Server::get(IUserManager::class)->registerBackend($backend);
 		$backend->createUser(self::TEST_USER_1, self::TEST_USER_1);
 		$backend->createUser(self::TEST_USER_2, self::TEST_USER_2);

tests/integration/import/ImportExportTest.php

@@ -61,7 +61,6 @@ public static function setUpBeforeClass(): void {
 		parent::setUpBeforeClass();
 
 		$backend = new \Test\Util\User\Dummy();
-		\OC_User::useBackend($backend);
 		Server::get(IUserManager::class)->registerBackend($backend);
 		$backend->createUser('alice', 'alice');
 		$backend->createUser('jane', 'jane');