In Episode 4 of Testing All The Things we continue to create the driving licence generator we started in the previous two videos. In this video we create a mock random number generator to create random digits to the end of the driving licence number.
You can find all the Test Double code in this GitHub repository or just the code created for the spy functionality in this commit
In episode 2 of Testing All The Things we start to exploring Test Doubles. Test doubles are used to isolate the code under test from its dependencies. Test doubles imitate the functionality of a dependency.
Creating test doubles do not require the use of a mocking framework. In the following videos we will not use a mocking framework so we can concentrate of the theory.
In the first video we are looking at the simplest form of Test Double, Stubs.