CST438 - Week 2

 

CST438: Software Engineering – Week 2

Mocks are used to eliminate dependencies in testing, enabling fast, independent, repeatable, and timely unit tests. They are powerful tools that allow developers to avoid setting up full configurations for databases or external services when running JUnit tests. This lets developers focus on testing the behavior of specific functions without fully creating databases or external data sources for each test.

For example, if a test depends on other components to run first—such as initializing variables or creating fields—running the test in isolation can be difficult. JUnit mocking solves this by providing predefined responses from those dependent components, ensuring they don't interfere with the current test.