Add unit tests for the newly added command

lib/Command/RepairNotifications.php

@@ -33,7 +33,7 @@ class RepairNotifications extends Command {
 	/** @var IDBConnection */
 	protected $connection;
 
-	private static $availableSubjects = [
+	public static $availableSubjects = [
 		'relativeLinks'
 	];
 
@@ -75,7 +75,7 @@ protected function execute(InputInterface $input, OutputInterface $output) {
 
 		if (!$result) {
 			$output->writeln('No notifications found to repair.');
-			return false;
+			return 0;
 		}
 
 		$output->writeln(\sprintf('%s notification(s) found to repair', \count($result)));

tests/Unit/Command/RepairNotificationsTest.php

@@ -0,0 +1,83 @@
+<?php
+/**
+ * @author Jannik Stehle <[email protected]>
+ * @author Jan Ackermann <[email protected]>
+ *
+ * @copyright Copyright (c) 2021, ownCloud GmbH
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * 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, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Notifications\Tests\Unit\Command;
+
+use Doctrine\DBAL\Driver\Statement;
+use OCA\Notifications\Command\Generate;
+use OCA\Notifications\Command\RepairNotifications;
+use OCA\Notifications\Tests\Unit\TestCase;
+use OCP\DB\QueryBuilder\IExpressionBuilder;
+use OCP\DB\QueryBuilder\IQueryBuilder;
+use OCP\IDBConnection;
+use Symfony\Component\Console\Tester\CommandTester;
+
+class RepairNotificationsTest extends TestCase {
+
+	/** @var IDBConnection | \PHPUnit\Framework\MockObject\MockObject */
+	protected $connection;
+	/** @var Generate */
+	protected $command;
+	/** @var CommandTester */
+	protected $tester;
+
+	protected function setUp(): void {
+		parent::setUp();
+
+		$this->connection = $this->createMock(IDBConnection::class);
+		$this->command = new RepairNotifications($this->connection);
+		$this->tester = new CommandTester($this->command);
+	}
+
+	public function testInvalidSubject() {
+		$this->expectException(\LogicException::class);
+
+		$options = [];
+		$input = ['subject' => 'test'];
+		$this->tester->execute($input, $options);
+	}
+
+	public function testRepairLinks() {
+		$options = [];
+		$input = ['subject' => RepairNotifications::$availableSubjects[0]];
+
+		$dbResult = [
+			['notification_id' => 1, 'link' => 'http://owncloud.com/test', 'actions' => '[]']
+		];
+
+		$exprBuilder = $this->createMock(IExpressionBuilder::class);
+		$statementMock = $this->createMock(Statement::class);
+		$statementMock->method('fetchAll')->willReturn($dbResult);
+		$qbMock = $this->createMock(IQueryBuilder::class);
+		$qbMock->method('select')->willReturnSelf();
+		$qbMock->method('from')->willReturnSelf();
+		$qbMock->method('update')->willReturnSelf();
+		$qbMock->method('where')->willReturnSelf();
+		$qbMock->method('expr')->willReturn($exprBuilder);
+		$qbMock->method('execute')->willReturn($statementMock);
+
+		$this->connection->method('getQueryBuilder')->willReturn($qbMock);
+
+		$response = $this->tester->execute($input, $options);
+		$this->assertEquals(0, $response);
+	}
+}