public function testFileAdapterWrite()
{
$resources = Libraries::get(true, 'resources');
$path = "{$resources}/tmp/cache";
$this->skipIf(!$this->_checkPath(), "{$path} does not have the proper permissions.");
$config = array('default' => compact('path') + array('adapter' => 'File', 'filters' => array()));
Cache::config($config);
$time = time();
$result = Cache::write('default', 'key', 'value', "@{$time} +1 minute");
$this->assertNotEmpty($result);
$time = $time + 60;
$result = file_get_contents("{$path}/key");
$expected = "{:expiry:{$time}}\nvalue";
$this->assertEqual($result, $expected);
$result = unlink("{$path}/key");
$this->assertTrue($result);
$this->assertFileNotExists("{$path}/key");
}