Lecture 6 — Unit and Functional Testing (3h)

Objectives

• Write unit tests in gtest (C++) and pytest (Python)

• Understand unit vs integration vs functional tests

• Use test-driven development basics (red-green-refactor)

Content summary

Introduce gtest and pytest examples. Hands-on: write tests that expose bugs, fix code, and re-run test suites. Discuss test organization and basic fixtures.