Mocks, stubs, fakes, dummies and spies
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Learn to makr your tests easier, fast and lean using mocks, stubs, fakes, dummies and spies. Aprenda a tornar seus testes mais simples, rápidos e enxutos com a utilização de mocks, stubs, fakes, dummies e spies. Palestra apresentada em 8/04/17 no Agile Testers Conference RJ http://conferencia.agiletesters.com.br/riodejaneiro.html
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- 1. Mocks, Stubs, Fakes Dummies and Spies Raphael Almeida
- 2. Who Am I? Raphael Almeida Developer since 2006 Co-founder of PHPRio, DojoRio, RubyOnRio … Community-a-holic
- 3. Double Objects Type of Verifications Best Practices
- 4. Double Objects: Simplist test
- 5. Double Objects: Awkward test
- 7. Dummies Used whenever we need to pass irrelevant or never used arguments only to respect the method signature
- 8. Dummies
- 9. Fakes Simplified implementation of a real method
- 10. Fakes
- 11. Stubs Provide canned responses to calls made during the test
- 12. Stubs
- 13. Spies Stubs that also record some information based on how they were called
- 14. Spies
- 15. Mocks Pre-programmed objects with expectations which form a specification of the calls they are expected to receive
- 16. Mocks
- 17. Double Objects Type of Verifications Best Practices
- 18. Types of Verifications State or Behaviour
- 19. Verifying State We inspect the state of the tested object after it has been exercised and compare it to the expected state
- 20. Verifying Behaviour We capture the indirect output of the tested object as they occur and compare them to the expected behavior
- 21. Double Objects Type of Verifications Best Practices
- 22. Best Practices Don’t mock values Verify the context (easy or awkward) Use Fixtures with parsimony Coupling test to implementations