public function testIssue()
{
$cache = new FileSystemCache($this->cacheDir);
$cache->set('foo', 'bar');
$this->assertFileExists($this->cacheDir . '/foo.cache');
// put something in the cache folder
file_put_contents($this->cacheDir . '/something.txt', 'dummy contents');
$cache->clean();
// the cache file was removed by clean()
$this->assertFileNotExists($this->cacheDir . '/foo.cache');
// the file is not deleted by clean()
$this->assertFileExists($this->cacheDir . '/something.txt');
}
