public function testAnAppAccessTokenCanBeDetected()
{
$normalToken = new AccessToken('foo_token');
$isNormalToken = $normalToken->isAppAccessToken();
$this->assertFalse($isNormalToken, 'Normal access token not expected to look like an app access token.');
$appToken = new AccessToken('123|secret');
$isAppToken = $appToken->isAppAccessToken();
$this->assertTrue($isAppToken, 'App access token expected to look like an app access token.');
}
/**
* Returns the URL to send the user in order to log out of Facebook.
*
* @param AccessToken|string $accessToken The access token that will be logged out.
* @param string $next The url Facebook should redirect the user to after a successful logout.
* @param string $separator The separator to use in http_build_query().
*
* @return string
*
* @throws FacebookSDKException
*/
public function getLogoutUrl($accessToken, $next, $separator = '&')
{
if (!$accessToken instanceof AccessToken) {
$accessToken = new AccessToken($accessToken);
}
if ($accessToken->isAppAccessToken()) {
throw new FacebookSDKException('Cannot generate a logout URL with an app access token.', 722);
}
$params = ['next' => $next, 'access_token' => $accessToken->getValue()];
return 'https://www.facebook.com/logout.php?' . http_build_query($params, null, $separator);
}