Testing is important for project quality and reliability. Unit tests check individual code units for correct functionality, are fast and independent. Behavior-driven development (BDD) applies business needs through scenarios defined in Gherkin. Test doubles replace code to independently test objects like dummies, fakes, stubs and mocks. Integration tests check connections between components while acceptance tests check overall project behavior from the user perspective, ensuring expected functionality but are slower and require more maintenance.

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3. 1.

4. Everyone's interest in the quality of the project
is a must

6. Saves time in debugging

7. Identify and fix bugs before production

8. Avoid regressions

9. Check integration between systems

10. Analyze the source of bugs

11. Ensuring project reliability

12. 2.

15. What is it?
Tests are defined first and then coded

17. Advantages
● Minimal use of debugger
● Quality from beginning
● Focused on functionality

19. What is it?
From applying TDD but applying business needs

20. How to apply it?
Same principles as TDD but executed by scenarios defined in
Gherkin language

21. 3.

23. Do we need to explain?
Checks the correct functioning of a minimum code unit.

24. Advantages
● Speed
● Atomicity and independency
● Code documentation
● Robusted

26. Test Doubles
Replace code for the purpose of independently testing objects

27. Doubles Test Types
- Dummy: objects created
to pass them through
parameters but not
actually used.

28. Doubles Test Types
- Fake: objects with
functionality but with
limitations in their
implementation, so
they are not useful for
production.

29. Doubles Test Types
- Stub: objects designed
to respond to specific
responses by ignoring
any other behavior.

30. Doubles Test Types
- Mock: objects
preprogrammed with
concrete expectations,
ignoring calls that do not
adapt to these.

31. Doubles Test Types
- Spy: objects that check the
calls made ignoring the
parameters used.

32. 4.

34. What is it?
Check part connections with other components

35. Advantages
● Isolated check of integration
● Check expected behaviour of module
● Speed

36. Disadvantages
● Complexity
● Need more resources than unit tests

38. What is it?
Check the behaviour of the project as expected by the user.

39. Advantages
● Gherkin language
● Guarantees functionality
● Check expected behaviour of project

40. Disadvantages
● Slow
● Maintenance
● Resources