Use \OCP\IUserManager instead of static getDisplayName()

appinfo/application.php

@@ -118,7 +118,8 @@ class Application extends App {
 				$server->getDateTimeFormatter(),
 				$server->getDatabaseConnection(),
 				$c->query('DataHelper'),
-				$server->getMailer()
+				$server->getMailer(),
+				$server->getUserManager()
 			);
 		});
 

lib/mailqueuehandler.php

@@ -25,6 +25,8 @@ namespace OCA\Activity;
 
 use OCP\IDateTimeFormatter;
 use OCP\IDBConnection;
+use OCP\IUser;
+use OCP\IUserManager;
 use OCP\Mail\IMailer;
 use OCP\Util;
 
@@ -63,15 +65,18 @@ class MailQueueHandler {
 	 * @param IDBConnection $connection
 	 * @param DataHelper $dataHelper
 	 * @param IMailer $mailer
+	 * @param IUserManager $userManager
 	 */
 	public function __construct(IDateTimeFormatter $dateFormatter,
 								IDBConnection $connection,
 								DataHelper $dataHelper,
-								IMailer $mailer) {
+								IMailer $mailer,
+								IUserManager $userManager) {
 		$this->dateFormatter = $dateFormatter;
 		$this->connection = $connection;
 		$this->dataHelper = $dataHelper;
 		$this->mailer = $mailer;
+		$this->userManager = $userManager;
 	}
 
 	/**
@@ -185,15 +190,20 @@ class MailQueueHandler {
 	/**
 	 * Send a notification to one user
 	 *
-	 * @param string $user Username of the recipient
+	 * @param string $userName Username of the recipient
 	 * @param string $email Email address of the recipient
 	 * @param string $lang Selected language of the recipient
 	 * @param string $timezone Selected timezone of the recipient
 	 * @param array $mailData Notification data we send to the user
 	 */
-	public function sendEmailToUser($user, $email, $lang, $timezone, $mailData) {
+	public function sendEmailToUser($userName, $email, $lang, $timezone, $mailData) {
+		$user = $this->userManager->get($userName);
+		if (!$user instanceof IUser) {
+			return;
+		}
+
 		$l = $this->getLanguage($lang);
-		$this->dataHelper->setUser($user);
+		$this->dataHelper->setUser($userName);
 		$this->dataHelper->setL10n($l);
 
 		$activityList = array();
@@ -213,7 +223,7 @@ class MailQueueHandler {
 		}
 
 		$alttext = new \OCP\Template('activity', 'email.notification', '');
-		$alttext->assign('username', \OCP\User::getDisplayName($user));
+		$alttext->assign('username', $user->getDisplayName());
 		$alttext->assign('timeframe', $this->getLangForApproximatedTimeFrame($mailData[0]['amq_timestamp']));
 		$alttext->assign('activities', $activityList);
 		$alttext->assign('owncloud_installation', \OC_Helper::makeURLAbsolute('/'));
@@ -221,7 +231,7 @@ class MailQueueHandler {
 		$emailText = $alttext->fetchPage();
 
 		$message = $this->mailer->createMessage();
-		$message->setTo([$email => \OCP\User::getDisplayName($user)]);
+		$message->setTo([$email => $user->getDisplayName()]);
 		$message->setSubject((string) $l->t('Activity notification'));
 		$message->setPlainBody($emailText);
 		$message->setFrom([$this->getSenderData('email') => $this->getSenderData('name')]);

tests/mailqueuehandlertest.php

@@ -46,7 +46,6 @@ class MailQueueHandlerTest extends TestCase {
 
 		$app = $this->getUniqueID('MailQueueHandlerTest');
 		$this->userManager = $this->getMock('OCP\IUserManager');
-		$this->registerUserManager($this->userManager);
 
 		$query = \OCP\DB::prepare('INSERT INTO `*PREFIX*activity_mq` '
 			. ' (`amq_appid`, `amq_subject`, `amq_subjectparams`, `amq_affecteduser`, `amq_timestamp`, `amq_type`, `amq_latest_send`) '
@@ -72,7 +71,8 @@ class MailQueueHandlerTest extends TestCase {
 			$this->getMockBuilder('\OCA\Activity\DataHelper')
 				->disableOriginalConstructor()
 				->getMock(),
-			$this->mailer
+			$this->mailer,
+			$this->userManager
 		);
 	}
 
@@ -80,24 +80,9 @@ class MailQueueHandlerTest extends TestCase {
 		$query = \OCP\DB::prepare('DELETE FROM `*PREFIX*activity_mq` WHERE `amq_timestamp` < 200');
 		$query->execute();
 
-		$this->restoreUserManager();
 		parent::tearDown();
 	}
 
-	protected function registerUserManager($userManager) {
-		$this->oldUserManager = \OC::$server->getUserManager();
-		\OC::$server->registerService('UserManager', function () use ($userManager) {
-			return $userManager;
-		});
-	}
-
-	protected function restoreUserManager() {
-		$oldUserManager = $this->oldUserManager;
-		\OC::$server->registerService('UserManager', function () use ($oldUserManager) {
-			return $oldUserManager;
-		});
-	}
-
 	public function getAffectedUsersData()
 	{
 		return [
@@ -171,14 +156,19 @@ class MailQueueHandlerTest extends TestCase {
 			->willReturn($userDisplayName);
 		$this->userManager->expects($this->any())
 			->method('get')
-			->with($user)
-			->willReturn($userObject);
+			->willReturnMap([
+				[$user, $userObject],
+				[$user . $user, null],
+			]);
 
 		$users = $this->mailQueueHandler->getAffectedUsers(1, $maxTime);
 		$this->assertEquals([$user], $users);
 		$items = $this->mailQueueHandler->getItemsForUsers($users, $maxTime);
 		$this->assertArrayHasKey($user, $items);
 		$this->mailQueueHandler->sendEmailToUser($user, $email, 'en', 'UTC', $items[$user]);
+
+		// Invalid user, no object no email
+		$this->mailQueueHandler->sendEmailToUser($user . $user, $email, 'en', 'UTC', $items[$user]);
 	}
 
 	/**