public function testCreateUpdateXML()
{
$coupon = new Recurly_Coupon();
// should ignore these values
$coupon->coupon_code = 'fifteen-off';
$coupon->discount_type = 'dollar';
$coupon->discount_in_cents->addCurrency('USD', 1500);
$coupon->plan_codes = array('gold', 'monthly');
// should serialize these values
$coupon->name = '$15 Off';
$coupon->invoice_description = 'Invoice description';
$coupon->redeem_by_date = '2017-12-01';
$coupon->max_redemptions = 100;
$coupon->max_redemptions_per_account = 3;
$this->assertEquals("<?xml version=\"1.0\"?>\n<coupon><name>\$15 Off</name><max_redemptions>100</max_redemptions><max_redemptions_per_account>3</max_redemptions_per_account><hosted_description></hosted_description><invoice_description>Invoice description</invoice_description><redeem_by_date>2017-12-01</redeem_by_date></coupon>\n", $coupon->createUpdateXML());
}
