Add trait to enable encryption for a unit test

tests/lib/traits/encryptiontrait.php

+<?php
+/**
+ * Copyright (c) 2015 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace Test\Traits;
+
+use OC\Encryption\Util;
+use OC\Files\View;
+use OCA\Encryption\AppInfo\Application;
+use OCA\Encryption\KeyManager;
+use OCA\Encryption\Users\Setup;
+use OC\Files\Filesystem;
+
+/**
+ * Enables encryption
+ */
+trait EncryptionTrait {
+	// from MountProviderTrait
+	abstract protected function registerStorageWrapper($name, $wrapper);
+
+	// from phpunit
+	abstract protected function markTestSkipped($reason = '');
+	abstract protected function assertTrue($condition, $message = '');
+
+	private $encryptionWasEnabled;
+
+	private $originalEncryptionModule;
+
+	/**
+	 * @var \OCP\IConfig
+	 */
+	private $config;
+
+	/**
+	 * @var \OCA\Encryption\AppInfo\Application
+	 */
+	private $encryptionApp;
+
+	protected function loginWithEncryption($user = '') {
+		\OC_Util::tearDownFS();
+		\OC_User::setUserId('');
+		// needed for fully logout
+		\OC::$server->getUserSession()->setUser(null);
+
+		Filesystem::tearDown();
+		\OC_User::setUserId($user);
+		$this->postLogin();
+		\OC_Util::setupFS($user);
+		if (\OC_User::userExists($user)) {
+			\OC::$server->getUserFolder($user);
+		}
+	}
+
+	protected function setupForUser($name, $password) {
+		\OC_Util::tearDownFS();
+		\OC_Util::setupFS($name);
+		$container = $this->encryptionApp->getContainer();
+		/** @var KeyManager $keyManager */
+		$keyManager = $container->query('KeyManager');
+		/** @var Setup $userSetup */
+		$userSetup = $container->query('UserSetup');
+		$userSetup->setupServerSide($name, $password);
+		$keyManager->init($name, $password);
+	}
+
+	protected function postLogin() {
+		$util = new Util(
+			new View(),
+			\OC::$server->getUserManager(),
+			\OC::$server->getGroupManager(),
+			\OC::$server->getConfig()
+		);
+		$this->registerStorageWrapper('oc_encryption', array($util, 'wrapStorage'));
+	}
+
+	protected function setUpEncryptionTrait() {
+		$isReady = \OC::$server->getEncryptionManager()->isReady();
+		if (!$isReady) {
+			$this->markTestSkipped('Encryption not ready');
+		}
+
+		\OC_App::loadApp('encryption');
+
+		$this->encryptionApp = new Application([], $isReady);
+
+		$this->config = \OC::$server->getConfig();
+		$this->encryptionWasEnabled = $this->config->getAppValue('core', 'encryption_enabled', 'no');
+		$this->originalEncryptionModule = $this->config->getAppValue('core', 'default_encryption_module');
+		$this->config->setAppValue('core', 'default_encryption_module', \OCA\Encryption\Crypto\Encryption::ID);
+		$this->config->setAppValue('core', 'encryption_enabled', 'yes');
+		$this->assertTrue(\OC::$server->getEncryptionManager()->isEnabled());
+	}
+
+	protected function tearDownEncryptionTrait() {
+		if ($this->config) {
+			$this->config->setAppValue('core', 'encryption_enabled', $this->encryptionWasEnabled);
+			$this->config->setAppValue('core', 'default_encryption_module', $this->originalEncryptionModule);
+		}
+	}
+}