Timer Example

How to test a Timer that goes off in 24 hours in just milliseconds

This example shows how to make unit test involving a Timer such that you control when the timer goes off. This example consists of a few tests on one system. Here are the files for this example....

TestExample.java - The tests themselves
CalendarServiceImpl.java - The system we are testing
CalendarService.java - The api of the system we are testing
ScheduleListener.java - The listener part of the api of the system we are testing
TimerInterface.java - The timer we are mocking
TimerInterfaceImpl.java - The timer used in the real running system