Palestra apresentada no encontro de maio pelo Raphael Amorim - https://speakerdeck.com/raphamorim

1. IT'S NOT JUST ABOUT TESTS
RAPHAEL AMORIM

2. WHAT’S SOFTWARE
TEST?
FIRST THINGS FIRST

3. 1. SOFTWARE TESTING IS A PROCESS OF
EXECUTING A PROGRAM OR
APPLICATION WITH THE INTENT OF FINDING
THE SOFTWARE BUGS.

4. 2. PROCESS OF VALIDATING AND VERIFYING
THAT A SOFTWARE PROGRAM OR
APPLICATION OR PRODUCT.

5. 3. IN SHORT:
THERE ARE SEVERAL TYPES/
METHODOLOGIES OF SOFTWARE TESTING.

6. 3. IN SHORT:
THERE ARE SEVERAL TYPES/
METHODOLOGIES OF SOFTWARE TESTING.
E.G:
UNIT TESTS,
INTEGRATION TESTS,
OPERATIONAL ACCEPTANCE TESTS…

7. BUT WHY TEST MY SOFTWARE ?

8. IT'S NOT JUST ABOUT TESTS
WHY SOFTWARE TESTS?
▸ To ensure that what we create does what it’s supposed to do.

9. IT'S NOT JUST ABOUT TESTS
WHY SOFTWARE TESTS?
▸ To ensure that what we create does what it’s supposed to do.
▸ “Something that works when one person is using it may not work when
hundreds of people are using it”.

10. IT'S NOT JUST ABOUT TESTS
WHY SOFTWARE TESTS?
▸ To ensure that what we create does what it’s supposed to do.
▸ “Something that works when one person is using it may not work when
hundreds of people are using it”.
▸ We owe it to our users and ourselves to deliver the best application we can.

11. IT'S NOT JUST ABOUT TESTS
WHY SOFTWARE TESTS?
▸ To ensure that what we create does what it’s supposed to do.
▸ “Something that works when one person is using it may not work when
hundreds of people are using it”.
▸ We owe it to our users and ourselves to deliver the best application we can.
▸ Tests means Quality.

12. WE'LL NOT TALK ABOUT TESTS.
WE'LL TALK ABOUT DEVELOPMENT PROCESS.

13. TEST DRIVEN
DEVELOPMENT
SOFTWARE DEVELOPMENT
PROCESS

14. HOWEVER, TDD IS NOT THE "ONLY ONE"
( BDD, CDD, DDD, MDD, FDD, ATDD,
AND THE OTHER DOUBLE D’S )

15. IT’S NOT JUST ABOUT TESTS
TDD CYCLE

16. “ FOLK WISDOM IN SOFTWARE DEVELOPMENT TEACHES
THAT INTERFACES SHOULDN'T BE UNDULY INFLUENCED BY
IMPLEMENTATIONS. WRITING A TEST FIRST IS A CONCRETE
WAY TO ACHIEVE THIS SEPARATION. ”
Kent Beck,
Extreme Programming Explained: Embrace Change
IT'S NOT JUST ABOUT TESTS

17. “ IF IT'S HARD TO BE TESTED,
SORRY YOUR CODE DESIGN IS WRONG. ”
Raphael Amorim,
Random Tweet
IT'S NOT JUST ABOUT TESTS

18. TEST DRIVEN
DEVELOPMENT
“ The Bad Parts ”

19. EXTRA DEVELOPMENT
REQUIRED

20. MISUSE OF MOCK
OBJECTS

21. MISUSE OF MOCK
OBJECTS
http://martinfowler.com/articles/mocksArentStubs.html
Mocks Aren’t Stubs
http://blog.testdouble.com/posts/2014-01-25-the-failures-of-intro-to-tdd.html
The Failures of "Intro to TDD"

22. TEST DRIVEN
DEVELOPMENT
“ The Good Parts ”

23. NO MORE BUGS INTO
PRODUCTION

24. ALMOST NO BUGS INTO
PRODUCTION
Back to Reality:

25. TEST DRIVEN
DEVELOPMENT
“ The AWESOME Parts ”

26. GREAT API DESIGN

27. ++DOCUMENTATION

28. HIGH SPEED DEBUGGING

29. ENCOURAGES SOLID DESIGN

30. TDD IS NOT FOR EVERYONE

31. TDD IS NOT FOR EVERYONE
http://claysnow.co.uk/to-tdd-or-not-to-tdd/
To TDD or not to TDD? That is not the question

32. “ TDD IS NOT EASY, IT TAKES TIME TO LEARN AND GET
RIGHT AND THERE IS A RISK THAT IT COULD BE A TIME SINK
FOR A PROJECT IF THE ENTIRE DEVELOPMENT TEAM DOES
NOT BUY INTO ITS USAGE. ”
Bradley Braithwaite,
TDD: It's not just about the Tests
IT'S NOT JUST ABOUT TESTS

33. WHERE TO START

34. IT'S NOT JUST ABOUT TESTS
▸ The ThreeRules Of Tdd
( http://butunclebob.com/ArticleS.UncleBob.TheThreeRulesOfTdd )
▸ Test Driven Development: By Example
( http://www.amazon.com/Test-Driven-Development-By-Example/dp/
0321146530 )
▸ Growing Object-Oriented Software, Guided by Tests
( http://www.amazon.com/Growing-Object-Oriented-Software-Guided-Tests/dp/
0321503627 )
▸ Test-Driven Development: A Practical Guide: A Practical Guide
( http://www.amazon.com/Test-Driven-Development-Practical-Guide/dp/
0131016490 )

35. IT'S NOT JUST ABOUT TESTS
▸ TDD no Mundo Real (PT-BR)
( http://tddnomundoreal.com.br/ )

36. “ THANK YOU! ”
- @RAPHAMUNDI

37. IT'S NOT JUST ABOUT TESTS
REFERENCES
▸ Extreme Programming Explained: Embrace Change, 2000 - Kent Beck.
▸ TDD: It's not just about the Tests, 2012 - Bradley Braithwaite
▸ 5 Reasons We Need Software Testing, 2014 - Cullyn Thomson