<?php
/**
 * @author Joas Schilling <nickvergessen@owncloud.com>
 *
 * @copyright Copyright (c) 2015, ownCloud, Inc.
 * @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 Test\Session;

use OC\Session\CryptoSessionData;
use Test\TestCase;

class CryptoWrappingTest extends TestCase {
	/** @var \PHPUnit_Framework_MockObject_MockObject|\OCP\Security\ICrypto */
	protected $crypto;

	/** @var \PHPUnit_Framework_MockObject_MockObject|\OCP\ISession */
	protected $wrappedSession;

	/** @var \OC\Session\CryptoSessionData */
	protected $instance;

	protected function setUp() {
		parent::setUp();

		$this->wrappedSession = $this->getMockBuilder('OCP\ISession')
			->disableOriginalConstructor()
			->getMock();
		$this->crypto = $this->getMockBuilder('OCP\Security\ICrypto')
			->disableOriginalConstructor()
			->getMock();
		$this->crypto->expects($this->any())
			->method('encrypt')
			->willReturnCallback(function ($input) {
				return $input;
			});
		$this->crypto->expects($this->any())
			->method('decrypt')
			->willReturnCallback(function ($input) {
				return substr($input, 1, -1);
			});

		$this->instance = new CryptoSessionData($this->wrappedSession, $this->crypto, 'PASS');
	}

	public function testWrappingSet() {
		$unencryptedValue = 'foobar';

		$this->wrappedSession->expects($this->once())
			->method('set')
			->with('key', $this->crypto->encrypt(json_encode($unencryptedValue)));
		$this->instance->set('key', $unencryptedValue);
	}

	public function testUnwrappingGet() {
		$unencryptedValue = 'foobar';
		$encryptedValue = $this->crypto->encrypt($unencryptedValue);

		$this->wrappedSession->expects($this->once())
			->method('get')
			->with('key')
			->willReturnCallback(function () use ($encryptedValue) {
				return $encryptedValue;
			});

		$this->assertSame($unencryptedValue, $this->wrappedSession->get('key'));
	}
}
