This is a Maven application. In order to run the tests, you need to do a mvn test.
The url of the implementation is http://127.0.0.1:8080/rest/bank-transaction/deposit. You need to run as a Java application using Java 8.
An example of POST call body:
{ "result": "OK", "origin": { "sortCode": "01-01-12", "accountNumber": "43322122" }, "destination": { "sortCode": "01-01-13", "accountNumber": "43322123" } }