vashistha / cafe-billing

Sample billing system

Cafe-billing

Pre-requisite

• Java 1.8 +
• Scala 2.12.6
• sbt 1.1.4

Running tests

In terminal run following command
sbt test

Assumptions

1. For this exercise data type of food price is selected as BigDecimal and not a DomainObject such as Money. Creating a domain object looks over engineering for this exercise.
2. BillGenerator code ignores the non-available menu items and continue processing.
3. A maximum £20 service charge will apply in any case.

Note

Kept both functions totalBillWithServiceCharge() and totalBill() available to public use

Test Specification

Cafe X menu consists of the following items:

• Cola - Cold - 50p
• Coffee - Hot - £1.00
• Cheese Sandwich - Cold - £2.00
• Steak Sandwich - Hot - £4.50 Customers don’t know how much to tip and staff need tips to survive!

Step 1 : Standard Bill

Pass in a list of purchased items that produces a total bill. e.g. [“Cola”, “Coffee”, “Cheese Sandwich”] returns 3.5

Step 2: Service Charge

Add support for a service charge :

• When all purchased items are drinks no service charge is applied
• When purchased items include any food apply a service charge of 10% to the total bill (rounded to 2 decimal places)
• When purchased items include any hot food apply a service charge of 20% to the total bill with a maximum £20 service charge