<?php

namespace DeliciousBrains\WPMDB\Container\Doctrine\Tests\Common\Cache;

use DeliciousBrains\WPMDB\Container\Doctrine\Common\Cache\Cache;
use DeliciousBrains\WPMDB\Container\Doctrine\Common\Cache\FilesystemCache;
/**
 * @group DCOM-101
 */
class FilesystemCacheTest extends BaseFileCacheTest
{
    public function testLifetime()
    {
        $cache = $this->_getCacheDriver();
        // Test save
        $cache->save('test_key', 'testing this out', 10);
        // Test contains to test that save() worked
        $this->assertTrue($cache->contains('test_key'));
        // Test fetch
        $this->assertEquals('testing this out', $cache->fetch('test_key'));
        // access private methods
        $getFilename = new \ReflectionMethod($cache, 'getFilename');
        $getNamespacedId = new \ReflectionMethod($cache, 'getNamespacedId');
        $getFilename->setAccessible(\true);
        $getNamespacedId->setAccessible(\true);
        $id = $getNamespacedId->invoke($cache, 'test_key');
        $filename = $getFilename->invoke($cache, $id);
        $data = '';
        $lifetime = 0;
        $resource = \fopen($filename, "r");
        if (\false !== ($line = \fgets($resource))) {
            $lifetime = (int) $line;
        }
        while (\false !== ($line = \fgets($resource))) {
            $data .= $line;
        }
        $this->assertNotEquals(0, $lifetime, "previous lifetime could not be loaded");
        // update lifetime
        $lifetime = $lifetime - 20;
        \file_put_contents($filename, $lifetime . \PHP_EOL . $data);
        // test expired data
        $this->assertFalse($cache->contains('test_key'));
        $this->assertFalse($cache->fetch('test_key'));
    }
    public function testGetStats()
    {
        $cache = $this->_getCacheDriver();
        $stats = $cache->getStats();
        $this->assertNull($stats[Cache::STATS_HITS]);
        $this->assertNull($stats[Cache::STATS_MISSES]);
        $this->assertNull($stats[Cache::STATS_UPTIME]);
        $this->assertEquals(0, $stats[Cache::STATS_MEMORY_USAGE]);
        $this->assertGreaterThan(0, $stats[Cache::STATS_MEMORY_AVAILABLE]);
    }
    protected function _getCacheDriver()
    {
        return new FilesystemCache($this->directory);
    }
}
