diff --git a/tests/Feature/ZipFeatureTest.php b/tests/Feature/ZipFeatureTest.php
new file mode 100644
index 0000000..c3ffd6e
--- /dev/null
+++ b/tests/Feature/ZipFeatureTest.php
@@ -0,0 +1,147 @@
+<?php
+/**
+ * @copyright Copyright (c) 2022 Julius Härtl <jus@bitgrid.net>
+ *
+ * @author Julius Härtl <jus@bitgrid.net>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as
+ *  published by the Free Software Foundation, either version 3 of the
+ *  License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+use OCA\FilesZip\Service\ZipService;
+use OCP\Files\File;
+use OCP\Files\IRootFolder;
+use OCP\IUserManager;
+use OCP\Share\IShare;
+use Test\TestCase;
+use Test\Util\User\Dummy;
+
+/**
+ * @group DB
+ */
+class ZipFeatureTest extends TestCase {
+	public const TEST_USER1 = "test-user1";
+
+	public const TEST_FILES = [
+		'unzipped1',
+		'unzipped2',
+		'unzipped3',
+	];
+
+	private IRootFolder $rootFolder;
+	private ZipService $zipService;
+
+	public static function setUpBeforeClass(): void {
+		parent::setUpBeforeClass();
+		$backend = new Dummy();
+		$backend->createUser(self::TEST_USER1, self::TEST_USER1);
+		\OC::$server->get(IUserManager::class)->registerBackend($backend);
+	}
+
+	public function setUp(): void {
+		parent::setUp();
+		$this->rootFolder = \OC::$server->get(IRootFolder::class);
+		$this->zipService = \OC::$server->get(ZipService::class);
+		$folder = $this->loginAndGetUserFolder(self::TEST_USER1);
+		foreach (self::TEST_FILES as $filename) {
+			$folder->delete($filename);
+		}
+	}
+
+	public function testZipJob() {
+		$this->loginAndGetUserFolder(self::TEST_USER1)
+			->delete('/pendingzipfile.zip');
+
+		$files = [];
+		foreach (self::TEST_FILES as $filename) {
+			$files[] = $this->loginAndGetUserFolder(self::TEST_USER1)
+				->newFile($filename, $filename);
+		}
+
+
+		$fileIds = array_map(function ($file) {
+			return $file->getId();
+		}, $files);
+		$target = '/pendingzipfile.zip';
+		$this->zipService->createZipJob($fileIds, $target);
+
+		$jobList = \OCP\Server::get(\OCP\BackgroundJob\IJobList::class);
+		$this->assertTrue($jobList->has(\OCA\FilesZip\BackgroundJob\ZipJob::class, [
+			'uid' => self::TEST_USER1,
+			'fileIds' => $fileIds,
+			'target' => $target,
+		]));
+	}
+
+	public function testZip() {
+		$target = '/zipfile.zip';
+
+		$userFolder = $this->loginAndGetUserFolder(self::TEST_USER1);
+		$userFolder->delete($target);
+
+		$files = [];
+		foreach (self::TEST_FILES as $filename) {
+			$files[] = $this->loginAndGetUserFolder(self::TEST_USER1)
+				->newFile($filename, $filename);
+		}
+
+
+		$fileIds = array_map(function ($file) {
+			return $file->getId();
+		}, $files);
+		$this->zipService->zip(self::TEST_USER1, $fileIds, $target);
+		/** @var File $node */
+		$node = $userFolder->get($target);
+		$this->assertTrue($userFolder->nodeExists($target));
+		$this->assertEquals('application/zip', $node->getMimetype());
+		$this->assertEquals(671, $node->getSize());
+
+		$path = $node->getStorage()->getLocalFile($node->getInternalPath());
+		$zip = new \OC\Archive\ZIP($path);
+		self::assertEquals(self::TEST_FILES, $zip->getFiles());
+
+		$i = 0;
+		foreach (self::TEST_FILES as $filename) {
+			self::assertEquals($files[$i++]->getSize(), $zip->filesize($filename));
+		}
+	}
+
+	private function loginAndGetUserFolder(string $userId) {
+		$this->loginAsUser($userId);
+		return $this->rootFolder->getUserFolder($userId);
+	}
+
+	private function shareFileWithUser(File $file, $owner, $user) {
+		$this->shareManager = \OC::$server->getShareManager();
+		$share1 = $this->shareManager->newShare();
+		$share1->setNode($file)
+			->setSharedBy($owner)
+			->setSharedWith($user)
+			->setShareType(IShare::TYPE_USER)
+			->setPermissions(19);
+		$share1 = $this->shareManager->createShare($share1);
+		$share1->setStatus(IShare::STATUS_ACCEPTED);
+		$this->shareManager->updateShare($share1);
+	}
+
+	public function tearDown(): void {
+		parent::tearDown();
+		$folder = $this->rootFolder->getUserFolder(self::TEST_USER1);
+		foreach (self::TEST_FILES as $filename) {
+			$folder->delete($filename);
+		}
+	}
+}
diff --git a/tests/Unit/.gitkeep b/tests/Unit/.gitkeep
new file mode 100644
index 0000000..e69de29