Chapter 8

1. What is the base layer of the testing pyramid?
   • Unit tests.
2. What kinds of non-functional tests are there?
   • Performance, endurance, security, availability, integrity, and usability.
3. What is the name of a famous method for root cause analysis?
   • 5 whys
4. Is it possible to test compile-time code in C++?
   • Yes, for example, using static_assert.
5. What should you use when writing unit tests for code with external dependencies?
   • Test doubles such as mocks and fakes.
6. What is the role of unit tests in Continuous Integration/Continuous Deployment?
   • They are the basis of a gating mechanism and act as an early warning feature.
7. Name some tools that allow the testing of infrastructure code.
   • Serverspec, Testinfra, Goss.
8. Is it a good idea to access the class's private attributes and methods in a unit test?
   • You should design classes in such a way that you never have to access their private attributes directly.