CurrencyConverter App - PayPay
● Develop a currency conversion app that allows a user to view a given amount in a given currency converted into other currencies.
● Platform Requirements ○ Swift ○ Xcode 15
● Functional Requirements ● The required data must be fetched from the open exchange rates service [https://openexchangerates.org/]. ○ See the documentation for information on how to use their API [https://docs.openexchangerates.org/reference/api-introduction]. ○ You must use a free account - not a paid one. ○ Get a free App ID that will give you access to the Open Exchange Rates API here [https://openexchangerates.org/signup/free].
● The required data must be persisted locally to permit the application to be used offline after data has been fetched. ● In order to limit bandwidth usage, the required data can be refreshed from the API no more frequently than once every 30 minutes. ● The user must be able to select a currency from a list of currencies provided by open exchange rates. ● The user must be able to enter the desired amount for the selected currency. ● The user must then be shown a list showing the desired amount in the selected currency converted into amounts in each currency provided by open exchange rates. ○ If exchange rates for the selected currency are not available via open exchange rates, perform the conversions on the app side. ○ When converting, floating point errors are acceptable.
● The project must contain unit tests that ensure correct operation. UI Suggestion ● A text entry widget to enter the amount. ● A selection widget to select a currency. ● A list/grid of currency conversions.
NOTE
● Unit Test Writing test code is important.
