function testSetCacheFilename_DestructorSaves()
{
$filename = tempnam('/tmp', 'foo');
// create some cache data.
$cache = new Phlickr_Cache();
$cache->set('a key', 'value');
$cache->saveAs($filename);
unset($cache);
// load the cache and then delete the cache file
$this->api->setCacheFilename($filename);
unlink($filename);
$this->assertFalse(file_exists($filename), 'the file should not exist');
// unsetting the api should call the destructor and writeout the file.
unset($this->api);
$this->assertTrue(file_exists($filename), 'the file should exist');
$cache = Phlickr_Cache::createFrom($filename);
$this->assertType('Phlickr_Cache', $cache);
$this->assertTrue($cache->has('a key'), 'value should exist');
}
/**
* Set the name of the file used to save the cache when the object is
* destroyed.
*
* If the file exists and is readable, an attempt will be made to load it
* as a cache object using Phlickr_Cache::createFrom(). If the file does
* not contain a valid cache object then a new, empty, cache object will
* used and any previous cached information will be discarded.
*
* @param string The full path of the file.
* @return void
* @since 0.2.4
* @see __destruct(), getCacheFilename(), Phlickr_Cache::createFrom()
*/
public function setCacheFilename($filename)
{
$this->_cacheFilename = (string) $filename;
if (file_exists($this->_cacheFilename)) {
$this->_cache = Phlickr_Cache::createFrom($this->_cacheFilename);
}
}
function testCreateFrom_EmptyFile_AssignedShelfLife()
{
$tempName = tempnam('/tmp', 'cache');
touch($tempName);
$this->assertTrue(file_exists($tempName));
$cache = Phlickr_Cache::createFrom($tempName, 999);
unlink($tempName);
$this->assertType('Phlickr_Cache', $cache);
$this->assertEquals(999, $cache->getShelfLife());
$this->assertFalse($cache->has(self::URL_A));
$this->assertFalse($cache->has(self::URL_B));
}
/**
* Get a random favorite photo from a Flickr user.
*
* @param string $userEmail Email address of a Flickr user
* @return object Phlickr_Photo
*/
function getRandomFavoritePhoto($userEmail)
{
$api = new Phlickr_Api(FLICKR_API_KEY, FLICKR_API_SECRET);
// load a saved cache file if it exists, set the expiration limit to a week.
$api->setCache(Phlickr_Cache::createFrom(CACHE_FILE, 60 * 60 * 24 * 7));
// select a random favorite photo
$user = Phlickr_User::findByEmail($api, $userEmail);
$favlist = $user->getFavoritePhotoList();
$photo = $favlist->getRandomPhoto();
assert(!is_null($photo));
// serialize and save the cache file
$api->getCache()->saveAs(CACHE_FILE);
return $photo;
}
