Uploaded byHenri Tremblay
Do you know your mock? - Madras JUG 20171028
The document discusses various types of mock objects in software testing, including dummies, stubs, spies, true mocks, and fakes, as classified by notable contributors like Robert C. Martin. It emphasizes the importance of minimizing mock usage, modifying code for testability, and documenting tests. Additionally, the conclusion reinforces the principle of 'Keep It Simple, Stupid' (KISS) in testing practices.
Do you know your mock? - Madras JUG 20171028
- 1. © Henri Tremblay2015 Henri Tremblay Senior Software Engineer Terracotta, a Software AG company Do you know your mocks? @henri_tremblay
- 2. 2 Authors: Tim Mackinnon, SteveFreeman, Philip Craig https://www2.ccs.neu.edu/research/demeter/related- work/extreme-programming/MockObjectsFinal.PDF Original Mock Object paper (2000)
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- 4. 4 Henri Tremblay • Moreor less made possible class mocking and proxying • Coined the term “partial mocking”
- 5. 5 Author: Robert C. Martin https://8thlight.com/blog/uncle- bob/2014/05/14/TheLittleMocker.html UncleBob mock classification (2014)
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- 7. 7 A class thatyou pass to something else when you don't care how it's used. Dummy
- 8. 8 A class thatreturns a valid answer but always the same one. Stub
- 9. 9 You use aspy when you want to be sure that the authorize method was called by the system. Spy
- 10. 10 A true mockis a mock that knows how to verify itself. True Mock
- 11. 11 A Fake hasbusiness behavior. You can drive a fake to behave in different ways by giving it different data. Fake
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- 16. 16 Use as less mocksas possible
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Editor's Notes
- #3 He calls them Test doubles. From the most basic to the more advanced type of mock.
- #5 I’m Henri Tremblay, I’m also the founder of the PerfUG in Paris. I am now one of the Montreal Jug leaders, so if you ever pass by, come say hello and present something. Finally, I’m also involved in Devoxx4kids Québec. Thank you very much for attending, I hope it was useful and I hope you had fun. My favourite question after a talk so I can know if I should keep doing it, is
- #6 He calls them Test doubles. From the most basic to the more advanced type of mock.
- #11 A true mock is a mock that knows how to verify itself. In fact, EasyMock and Mockito mocks are always true mocks. So their implementations of a true mock is the same as for the spy.
- #20 About Ehcache, version 3 has been out for a while now. It is obviously faster, safer, nicer. Please have a look and give us feedback. This is the end, do you have any question?