test: add test for cache mount provider

tests/lib/Files/Mount/CacheMountProviderTest.php

@@ -0,0 +1,108 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2023 Daniel Kesselberg <mail@danielkesselberg.de>
+ *
+ * @author Daniel Kesselberg <mail@danielkesselberg.de>
+ *
+ * @license AGPL-3.0-or-later
+ *
+ * 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 Test\Files\Mount;
+
+use OC\Files\Mount\CacheMountProvider;
+use OC\Files\Storage\StorageFactory;
+use OCP\Files\Storage\IStorageFactory;
+use OCP\IConfig;
+use OCP\IUser;
+use Test\TestCase;
+
+class CacheMountProviderTestStream {
+	public static $statCounter = 0;
+	public static $mkdirCounter = 0;
+
+	public $context;
+
+	public function mkdir(string $path, int $mode, int $options): bool {
+		self::$mkdirCounter++;
+		return true;
+	}
+
+	public function url_stat(string $path, int $flags): array|false {
+		self::$statCounter++;
+		return false;
+	}
+}
+
+class CacheMountProviderTest extends TestCase {
+	private IConfig $config;
+	private IUser $user;
+	private IStorageFactory $storageFactory;
+
+	protected function setUp(): void {
+		$this->config = $this->createMock(IConfig::class);
+		$this->user = $this->createMock(IUser::class);
+		$this->storageFactory = new StorageFactory();
+		stream_wrapper_register('cachemountprovidertest', CacheMountProviderTestStream::class);
+	}
+
+	protected function tearDown(): void {
+		stream_wrapper_unregister('cachemountprovidertest');
+	}
+
+	public function testGetMountsForUser(): void {
+		$provider = new CacheMountProvider($this->config);
+
+		$this->assertCount(0, $provider->getMountsForUser($this->user, $this->storageFactory));
+	}
+
+	public function testGetMountsForUserCacheDir(): void {
+		$this->config->expects($this->exactly(1))
+			->method('getSystemValueString')
+			->willReturnMap([
+				['cache_path', '', 'cachemountprovidertest:////cache_path'],
+			]);
+		$this->user->method('getUID')
+			->willReturn('bob');
+
+		$provider = new CacheMountProvider($this->config);
+		$mounts = $provider->getMountsForUser($this->user, $this->storageFactory);
+
+		$this->assertCount(2, $mounts);
+		$this->assertEquals(1, CacheMountProviderTestStream::$statCounter);
+		$this->assertEquals(2, CacheMountProviderTestStream::$mkdirCounter);
+
+		$cacheMountProvider = $mounts[0];
+		$this->assertEquals('/bob/cache/', $cacheMountProvider->getMountPoint());
+
+		$cacheStorage = $cacheMountProvider->getStorage();
+		$this->assertEquals('local::cachemountprovidertest://cache_path/bob/', $cacheStorage->getId());
+
+		$uploadsMountProvider = $mounts[1];
+		$this->assertEquals('/bob/uploads/', $uploadsMountProvider->getMountPoint());
+
+		$uploadsStorage = $uploadsMountProvider->getStorage();
+		$this->assertEquals('local::cachemountprovidertest://cache_path/bob/uploads/', $uploadsStorage->getId());
+
+		$cacheStorage->mkdir('foobar');
+		$this->assertEquals(3, CacheMountProviderTestStream::$mkdirCounter);
+
+		$uploadsStorage->mkdir('foobar');
+		$this->assertEquals(4, CacheMountProviderTestStream::$mkdirCounter);
+	}
+}