silverstripe-framework/tests/php/Core/CacheTest.php

<?php

namespace SilverStripe\Core\Tests;

use SilverStripe\Core\Cache;
use SilverStripe\Dev\SapphireTest;

class CacheTest extends SapphireTest
{

    public function testCacheBasics()
    {
        $cache = Cache::factory('test');

        $cache->save('Good', 'cachekey');
        $this->assertEquals('Good', $cache->load('cachekey'));
    }

    public function testCacheCanBeDisabled()
    {
        Cache::set_cache_lifetime('test', -1, 10);

        $cache = Cache::factory('test');

        $cache->save('Good', 'cachekey');
        $this->assertFalse($cache->load('cachekey'));
    }

    public function testCacheLifetime()
    {
        Cache::set_cache_lifetime('test', 0.5, 20);

        $cache = Cache::factory('test');
        $this->assertEquals(0.5, $cache->getOption('lifetime'));

        $cache->save('Good', 'cachekey');
        $this->assertEquals('Good', $cache->load('cachekey'));

        // As per documentation, sleep may not sleep for the amount of time you tell it to sleep for
        // This loop can make sure it *does* sleep for that long
        $endtime = time() + 2;
        while (time() < $endtime) {
            // Sleep for another 2 seconds!
            // This may end up sleeping for 4 seconds, but it's awwwwwwwright.
            sleep(2);
        }

        $this->assertFalse($cache->load('cachekey'));
    }

    public function testCacheSeperation()
    {
        $cache1 = Cache::factory('test1');
        $cache2 = Cache::factory('test2');

        $cache1->save('Foo', 'cachekey');
        $cache2->save('Bar', 'cachekey');
        $this->assertEquals('Foo', $cache1->load('cachekey'));
        $this->assertEquals('Bar', $cache2->load('cachekey'));

        $cache1->remove('cachekey');
        $this->assertFalse($cache1->load('cachekey'));
        $this->assertEquals('Bar', $cache2->load('cachekey'));
    }

    public function testCacheDefault()
    {
        Cache::set_cache_lifetime('default', 1200);
        $default = Cache::get_cache_lifetime('default');

        $this->assertEquals(1200, $default['lifetime']);

        $cache = Cache::factory('somethingnew');

        $this->assertEquals(1200, $cache->getOption('lifetime'));
    }
}