001 package org.cocome.tradingsystem.systests.interfaces; 002 003 /** 004 * Interface of the display visible to the user displaying product information 005 * and the running total. As the exact format of the display output is not 006 * specified, there are many methods to dermine the meaning of the display 007 * contents. These must be implemented by the glue code (which in turn should 008 * know enough about the actual implementation to extract this information). 009 * 010 * @author Benjamin Hummel 011 * @author Christian Pfaller 012 * @author $Author: hummel $ 013 * @version $Rev: 47 $ 014 * @levd.rating GREEN Rev: 47 015 */ 016 public interface IUserDisplay extends IUpdateReceiver { 017 018 /** 019 * Determines if the display currently shows the apropriate message to 020 * indicate scan of an invalid / unkown barcode; returns false otherwise 021 */ 022 public boolean isMessageForInvalidBarcodeShown() throws Exception; 023 024 /** 025 * Determines if the display currently shows the expected name of a product, 026 * returns false if not. 027 * 028 * @param expectedName - 029 * name of prodouct to be expeted in display 030 */ 031 public boolean isProductNameShown(String expectedName) throws Exception; 032 033 /** 034 * Determines if the display currently shows the expected price of a 035 * product, returns false if not. 036 * 037 * @param expectedPrice - 038 * price of product to be expeted in display 039 */ 040 public boolean isPriceShown(int expectedPrice) throws Exception; 041 042 /** 043 * Determines if the display currently shows the aporpriate message to 044 * indicate express mode. 045 */ 046 public boolean isMessageForExpressModeShown() throws Exception; 047 048 /** 049 * Determines if the display currently shows the apropriate message to 050 * indicate payment by credit card is not possible. 051 */ 052 public boolean isMessageForCreditCardNotPossibleShown() throws Exception; 053 054 /** 055 * Determines if the display currently shows the apropriate message to 056 * indicate payment by credit card was successful. 057 */ 058 public boolean isMessageForCreditCardPaymentSuccessfulShown() 059 throws Exception; 060 061 /** 062 * Determines if the display currently shows the apropriate message to 063 * indicate a failed validation of a credit card. 064 */ 065 public boolean isMessageForCreditCardValidationFailedShown() 066 throws Exception; 067 }