test: add test trait for creating temporary groups

Signed-off-by: Robin Appelman <robin@icewind.nl>

Author: icewind1991

tests/lib/Traits/GroupTrait.php

@@ -0,0 +1,63 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2022-2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace Test\Traits;
+
+use OC\Group\Group;
+use OCP\EventDispatcher\IEventDispatcher;
+use OCP\IGroup;
+use OCP\IGroupManager;
+use OCP\IUserManager;
+use OCP\Server;
+use Test\Util\Group\Dummy;
+
+class DummyGroup extends Group {
+	public function __construct(
+		private string $gid,
+	) {
+		parent::__construct(
+			$this->gid,
+			[],
+			Server::get(IEventDispatcher::class),
+			Server::get(IUserManager::class),
+		);
+	}
+
+	#[\Override]
+	public function getGID(): string {
+		return $this->gid;
+	}
+}
+
+/**
+ * Allow creating users in a temporary backend
+ */
+trait GroupTrait {
+	protected Dummy $groupBackend;
+
+	protected function createGroup(string $name, array $users = []): IGroup {
+		$this->groupBackend->createGroup($name);
+		foreach ($users as $user) {
+			$this->groupBackend->addToGroup($user, $name);
+		}
+		return new DummyGroup($name);
+	}
+
+	protected function addToGroup(string $user, string $group): void {
+		$this->groupBackend->addToGroup($user, $group);
+	}
+
+	protected function setUpGroupTrait() {
+		$this->groupBackend = new Dummy();
+		Server::get(IGroupManager::class)->addBackend($this->groupBackend);
+	}
+
+	protected function tearDownGroupTrait() {
+		Server::get(IGroupManager::class)->removeBackend($this->groupBackend);
+	}
+}

tests/lib/Traits/UserTrait.php

@@ -13,7 +13,7 @@
 use OCP\IUser;
 use OCP\IUserManager;
 use OCP\Server;
-use OCP\UserInterface;
+use Test\Util\User\Dummy;
 
 class DummyUser extends User {
 	public function __construct(
@@ -32,18 +32,15 @@ public function getUID(): string {
  * Allow creating users in a temporary backend
  */
 trait UserTrait {
-	/**
-	 * @var \Test\Util\User\Dummy|UserInterface
-	 */
-	protected $userBackend;
+	protected Dummy $userBackend;
 
 	protected function createUser($name, $password): IUser {
 		$this->userBackend->createUser($name, $password);
 		return new DummyUser($name);
 	}
 
 	protected function setUpUserTrait() {
-		$this->userBackend = new \Test\Util\User\Dummy();
+		$this->userBackend = new Dummy();
 		Server::get(IUserManager::class)->registerBackend($this->userBackend);
 	}