CacheWarmerTest.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Symfony\Component\HttpKernel\Tests\CacheWarmer;

use Symfony\Component\HttpKernel\CacheWarmer\CacheWarmer;
class CacheWarmerTest extends \PHPUnit_Framework_TestCase {
  protected static $cacheFile;
  public static function setUpBeforeClass() {
    self::$cacheFile = tempnam(sys_get_temp_dir(), 'sf2_cache_warmer_dir');
  }
  public static function tearDownAfterClass() {
    @unlink(self::$cacheFile);
  }
  public function testWriteCacheFileCreatesTheFile() {
    $warmer = new TestCacheWarmer(self::$cacheFile);
    $warmer
      ->warmUp(dirname(self::$cacheFile));
    $this
      ->assertTrue(file_exists(self::$cacheFile));
  }

  /**
   * @expectedException \RuntimeException
   */
  public function testWriteNonWritableCacheFileThrowsARuntimeException() {
    $nonWritableFile = '/this/file/is/very/probably/not/writable';
    $warmer = new TestCacheWarmer($nonWritableFile);
    $warmer
      ->warmUp(dirname($nonWritableFile));
  }

}
class TestCacheWarmer extends CacheWarmer {
  protected $file;
  public function __construct($file) {
    $this->file = $file;
  }
  public function warmUp($cacheDir) {
    $this
      ->writeCacheFile($this->file, 'content');
  }
  public function isOptional() {
    return false;
  }

}