class FilesystemCacheTest

class FilesystemCacheTest extends CacheTest {

  /**
   * @var \Doctrine\Common\Cache\FilesystemCache
   */
  private $driver;
  protected function _getCacheDriver() {
    $dir = sys_get_temp_dir() . "/doctrine_cache_" . uniqid();
    $this
      ->assertFalse(is_dir($dir));
    $this->driver = new FilesystemCache($dir);
    $this
      ->assertTrue(is_dir($dir));
    return $this->driver;
  }
  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);
  }
  public function tearDown() {
    $dir = $this->driver
      ->getDirectory();
    $ext = $this->driver
      ->getExtension();
    $iterator = new \RecursiveDirectoryIterator($dir);
    foreach (new \RecursiveIteratorIterator($iterator, \RecursiveIteratorIterator::CHILD_FIRST) as $file) {
      if ($file
        ->isFile()) {
        @unlink($file
          ->getRealPath());
      }
      else {
        @rmdir($file
          ->getRealPath());
      }
    }
  }

}