public function shouldUseCheckoutUriFromConfig()
{
$config = new Config();
$config->checkoutUri = 'theCheckoutUrl';
$action = new AuthorizeAction('aTemplate');
$action->setGateway($this->createGatewayMock());
$action->setApi($config);
$action->execute(new Authorize(['location' => 'aLocation', 'merchant' => ['confirmation_uri' => 'theConfirmationUri', 'terms_uri' => 'theTermsUri', 'push_uri' => 'thePushUri']]));
}