private String setUp()
{
receiptController = new ReceiptController();
ReceiptController.processOrders(orders_json);
ReceiptController.processPayments(payments_json);
ReceiptController.processPrices(prices_json);
return(receiptController.GetReceipts());
}
static void Main(string[] args)
{
ReceiptController receiptController = new ReceiptController();
receiptController.setUp(); // function that reads the files then calls the controller endpoints
String jsonResult = receiptController.GetReceipts(); // function to get the expected result
Console.WriteLine(jsonResult);
}