Getting started with unit and functional testing
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This document discusses the importance of testing code and different types of tests. It covers unit tests, integration tests, and end-to-end tests, explaining what each tests and providing examples. It also discusses best practices for writing good unit and integration tests, including testing behavior not implementation, avoiding dependencies, and using mocking and dependency injection. The goal is to establish a culture of testing code to ensure quality and prevent bugs.
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The document discusses testing activities in continuous integration and continuous delivery as an exploratory tester. It defines continuous integration and continuous delivery, noting that testing should be done continuously throughout the project lifecycle. It outlines testing activities like test strategy preparation, guiding development with behavior-driven development, exploratory testing including usability and regression testing, continuously reviewing and improving test suites, and testing in production-like environments. It emphasizes that exploratory testing focuses on learning unknowns through exploring requirements and the system, and that findings from exploratory testing can be used to identify areas for test automation or manual testing. Tools used in exploratory testing are also highlighted.
Software testing and software development process
The document discusses software testing and the software development process. It defines software testing as a process of assessing program functionality and correctness through execution or analysis to find bugs and fix them. The objectives of testing are verification, validation, and error detection. Testing is done in various stages including unit testing, integrated testing, system testing, and acceptance testing. However, complete testing is impossible due to the large number of possible inputs, paths, and design errors. The goals of testing are to find problems in order to improve quality by fixing bugs.
Test-Driven Development (TDD) in Swift
The document discusses test-driven development (TDD) in Swift. It explains that TDD involves writing tests before implementation to gain confidence and verify requirements are met. Automated tests allow for faster regression testing, easier refactoring, and continuous integration. The document recommends writing tests first to produce loosely coupled code aligned with requirements. It provides examples of TDD best practices and common pitfalls to avoid.
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Getting started with unit and functional testing
- 1. Getting started with Testing Adewale Andrade. 28/07/2017, Salvador, Bahia
- 2. WHY TEST? ○ Know that your code works…(and doesn’t breaks anyone else’s). ○ Make deliveries and deploys more stable…. ○ Saves time (and pain) wasted on bug fixing later… ○ Improving code designs and refactoring… ○ Reduce fear of failing...
- 3. TYPES OF TESTS (most common) ○ Unit Tests: ● Tests a small part of the application independently from other parts; (Testing one class’s method); ○ Integration Test (Functional Tests): ● Tests different parts of the application working together; (Testing a controller using multiple classes) ○ End-To-End Tests (E2E): ● Tests whether the flow of an application performs as designed from start to finish; (Testing a login flow)
- 4. OUR STACK ○ PHPUnit ○ Neos Flow ○ PHP 5.5.9 ○ Apache 2
- 5. OK… BUT….. What are we really testing?
- 7. “When testing, face the code like a complete stranger… You have no idea how it does what it should do… But you know your expectations!
- 8. WHAT MAKES A GOOD UNIT TEST? ○ Unit tests should be: ● Easy to write; ● Easy to read; ● Fast; ● Not an integration test ■ No access to external resources (network, databases, file systems, etc.)
- 9. A SIMPLE UNIT TEST
- 10. A SIMPLE INTEGRATION TEST
- 11. WHAT DO YOU NEED TO KNOW? ○ What are you testing? ○ How should it behave? ○ What are the edge cases? ○ Mapped entries? ○ Expected results?
- 12. OK… BUT….. Does the code quality even matter?
- 14. THINGS TO AVOID As much as possible!
- 17. WHEN TO USE EACH ONE ○ Unit Tests: ● Models ● Services methods that don’t have internal dependencies; ○ Integration Tests: ● Controllers; ● Services; ● Repositories;
- 18. HANDLING DEPENDENCIES ○ Unit tests: ● Maybe you should refactor it…. ● Dependency Injection; ● Mocking; ● Maybe it is an integration test; https://jtreminio.com/2013/03/unit-testing-tutorial-part-4-mock-objects-stub-methods-depen dency-injection/
- 19. HANDLING DEPENDENCIES ○ Integration tests: ● Dependency Injection; ● Mocking; ● Do not mock things that you are testing.
- 20. Show me the code! Finally… some action!
- 21. REINFORCING THE CULTURE ○ Pull Requests + Code Review ○ Continuous Integration Servers ● Coverage Tests ● Build Breaking and Notifying ○ Leading by example
- 22. Thanks ;) “With faith, my brother” Adewale Andrade Software Engineer @Agilize Contabilidade Online adewale.andrade@gmail.com