/**
* try to update a PurchaseInvoice
*/
public function testUpdatePurchaseInvoice()
{
$purchase = $this->_createPurchaseInvoice();
$this->assertEquals('2015-03-27 00:00:00', $purchase['due_at']);
$purchase['due_at'] = '2015-04-07 00:00:00';
$updatedPurchase = $this->_json->savePurchaseInvoice($purchase);
$this->assertEquals('2015-04-07 00:00:00', $updatedPurchase['due_at']);
}
