private function assertCacheAllowed(WURFL_Storage_Base $cache)
{
$config = array("dir" => self::storageDir(), WURFL_Configuration_Config::EXPIRATION => 0);
$storage = new WURFL_Storage_File($config);
$uncached_storage = new WURFL_Storage_File($config);
$this->assertTrue($storage->supportsSecondaryCaching());
$this->assertTrue($storage->validSecondaryCache($cache));
$storage->setCacheStorage($cache);
$storage->save("foo", "foo");
sleep(1);
// Make sure it's there
$this->assertEquals("foo", $storage->load("foo"));
$cache->clear();
// Check after cache is empty (fall through to file)
$this->assertEquals("foo", $storage->load("foo"));
// Remove underlying files
$uncached_storage->clear();
// Check cache without file-backing
$this->assertEquals("foo", $storage->load("foo"));
// Clear cache
$cache->clear();
$this->assertNull($storage->load("foo"));
}
