Here is a link to video by Hadi Hariri on how Mocks make uniting testing easier
Make Tests Easier with Mocks
Mocking allows functionality to be stubbed out during tests allowing you to concentrate on the system under test and less on other subsystems. This session covers the idea behind mocks and shows some of the existing mocking frameworks available. See how to effectively use mocks and what the differences are between state and behavior tests.
Here is a link to video by Robert Love on how to Building Unit Tests with DUnit for delphi
Building Unit Tests with DUnit Get up
to speed with unit testing in DUnit.
No prior knowledge of Unit testing or
DUnit is required.