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<?php
/**
 * XcacheEngineTest file
 *
 * CakePHP(tm) Tests <http://book.cakephp.org/2.0/en/development/testing.html>
 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the LICENSE.txt
 * Redistributions of files must retain the above copyright notice
 *
 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 * @link          http://book.cakephp.org/2.0/en/development/testing.html CakePHP(tm) Tests
 * @package       Cake.Test.Case.Cache.Engine
 * @since         CakePHP(tm) v 1.2.0.5434
 * @license       http://www.opensource.org/licenses/mit-license.php MIT License
 */

App::uses('Cache', 'Cache');

/**
 * XcacheEngineTest class
 *
 * @package       Cake.Test.Case.Cache.Engine
 */
class XcacheEngineTest extends CakeTestCase {

/**
 * setUp method
 *
 * @return void
 */
        public function setUp() {
                parent::setUp();
                if (!function_exists('xcache_set')) {
                        $this->markTestSkipped('Xcache is not installed or configured properly');
                }
                $this->_cacheDisable = Configure::read('Cache.disable');
                Configure::write('Cache.disable', false);
                Cache::config('xcache', array('engine' => 'Xcache', 'prefix' => 'cake_'));
        }

/**
 * tearDown method
 *
 * @return void
 */
        public function tearDown() {
                parent::tearDown();
                Configure::write('Cache.disable', $this->_cacheDisable);
                Cache::drop('xcache');
                Cache::drop('xcache_groups');
                Cache::config('default');
        }

/**
 * testSettings method
 *
 * @return void
 */
        public function testSettings() {
                $settings = Cache::settings();
                $expecting = array(
                        'prefix' => 'cake_',
                        'duration' => 3600,
                        'probability' => 100,
                        'engine' => 'Xcache',
                );
                $this->assertTrue(isset($settings['PHP_AUTH_USER']));
                $this->assertTrue(isset($settings['PHP_AUTH_PW']));

                unset($settings['PHP_AUTH_USER'], $settings['PHP_AUTH_PW']);
                $this->assertEquals($settings, $expecting);
        }

/**
 * testReadAndWriteCache method
 *
 * @return void
 */
        public function testReadAndWriteCache() {
                Cache::set(array('duration' => 1));

                $result = Cache::read('test');
                $expecting = '';
                $this->assertEquals($expecting, $result);

                $data = 'this is a test of the emergency broadcasting system';
                $result = Cache::write('test', $data);
                $this->assertTrue($result);

                $result = Cache::read('test');
                $expecting = $data;
                $this->assertEquals($expecting, $result);

                Cache::delete('test');
        }

/**
 * testExpiry method
 *
 * @return void
 */
        public function testExpiry() {
                Cache::set(array('duration' => 1));
                $result = Cache::read('test');
                $this->assertFalse($result);

                $data = 'this is a test of the emergency broadcasting system';
                $result = Cache::write('other_test', $data);
                $this->assertTrue($result);

                sleep(2);
                $result = Cache::read('other_test');
                $this->assertFalse($result);

                Cache::set(array('duration' => "+1 second"));

                $data = 'this is a test of the emergency broadcasting system';
                $result = Cache::write('other_test', $data);
                $this->assertTrue($result);

                sleep(2);
                $result = Cache::read('other_test');
                $this->assertFalse($result);
        }

/**
 * testDeleteCache method
 *
 * @return void
 */
        public function testDeleteCache() {
                $data = 'this is a test of the emergency broadcasting system';
                $result = Cache::write('delete_test', $data);
                $this->assertTrue($result);

                $result = Cache::delete('delete_test');
                $this->assertTrue($result);
        }

/**
 * testClearCache method
 *
 * @return void
 */
        public function testClearCache() {
                $data = 'this is a test of the emergency broadcasting system';
                $result = Cache::write('clear_test_1', $data);
                $this->assertTrue($result);

                $result = Cache::write('clear_test_2', $data);
                $this->assertTrue($result);

                $result = Cache::clear();
                $this->assertTrue($result);
        }

/**
 * testDecrement method
 *
 * @return void
 */
        public function testDecrement() {
                $result = Cache::write('test_decrement', 5);
                $this->assertTrue($result);

                $result = Cache::decrement('test_decrement');
                $this->assertEquals(4, $result);

                $result = Cache::read('test_decrement');
                $this->assertEquals(4, $result);

                $result = Cache::decrement('test_decrement', 2);
                $this->assertEquals(2, $result);

                $result = Cache::read('test_decrement');
                $this->assertEquals(2, $result);
        }

/**
 * testIncrement method
 *
 * @return void
 */
        public function testIncrement() {
                $result = Cache::write('test_increment', 5);
                $this->assertTrue($result);

                $result = Cache::increment('test_increment');
                $this->assertEquals(6, $result);

                $result = Cache::read('test_increment');
                $this->assertEquals(6, $result);

                $result = Cache::increment('test_increment', 2);
                $this->assertEquals(8, $result);

                $result = Cache::read('test_increment');
                $this->assertEquals(8, $result);
        }

/**
 * Tests that configuring groups for stored keys return the correct values when read/written
 * Shows that altering the group value is equivalent to deleting all keys under the same
 * group
 *
 * @return void
 */
        public function testGroupsReadWrite() {
                Cache::config('xcache_groups', array(
                        'engine' => 'Xcache',
                        'duration' => 0,
                        'groups' => array('group_a', 'group_b'),
                        'prefix' => 'test_'
                ));
                $this->assertTrue(Cache::write('test_groups', 'value', 'xcache_groups'));
                $this->assertEquals('value', Cache::read('test_groups', 'xcache_groups'));

                xcache_inc('test_group_a', 1);
                $this->assertFalse(Cache::read('test_groups', 'xcache_groups'));
                $this->assertTrue(Cache::write('test_groups', 'value2', 'xcache_groups'));
                $this->assertEquals('value2', Cache::read('test_groups', 'xcache_groups'));

                xcache_inc('test_group_b', 1);
                $this->assertFalse(Cache::read('test_groups', 'xcache_groups'));
                $this->assertTrue(Cache::write('test_groups', 'value3', 'xcache_groups'));
                $this->assertEquals('value3', Cache::read('test_groups', 'xcache_groups'));
        }

/**
 * Tests that deleteing from a groups-enabled config is possible
 *
 * @return void
 */
        public function testGroupDelete() {
                Cache::config('xcache_groups', array(
                        'engine' => 'Xcache',
                        'duration' => 0,
                        'groups' => array('group_a', 'group_b'),
                        'prefix' => 'test_'
                ));
                $this->assertTrue(Cache::write('test_groups', 'value', 'xcache_groups'));
                $this->assertEquals('value', Cache::read('test_groups', 'xcache_groups'));
                $this->assertTrue(Cache::delete('test_groups', 'xcache_groups'));

                $this->assertFalse(Cache::read('test_groups', 'xcache_groups'));
        }

/**
 * Test clearing a cache group
 *
 * @return void
 */
        public function testGroupClear() {
                Cache::config('xcache_groups', array(
                        'engine' => 'Xcache',
                        'duration' => 0,
                        'groups' => array('group_a', 'group_b'),
                        'prefix' => 'test_'
                ));

                $this->assertTrue(Cache::write('test_groups', 'value', 'xcache_groups'));
                $this->assertTrue(Cache::clearGroup('group_a', 'xcache_groups'));
                $this->assertFalse(Cache::read('test_groups', 'xcache_groups'));

                $this->assertTrue(Cache::write('test_groups', 'value2', 'xcache_groups'));
                $this->assertTrue(Cache::clearGroup('group_b', 'xcache_groups'));
                $this->assertFalse(Cache::read('test_groups', 'xcache_groups'));
        }
}